In the next sections, I’ll cover the Niki’s vibration power and rumbliness in-depth.

Here’s the main conclusion:

The Niki is one of the most stimulating panty vibrators and one of the few I can orgasm with hands-free. It’s strong, transfers the vibes where they should go, and is the most rumbly panty vibe I’ve tested. If you value raw power most, go with the stronger Lovense Ferri. If strong, rumbly vibrations matter more, go with the Niki.

In the next sections, I’ll cover the Flexer’s clit vibration power and rumbliness in-depth.

Here’s the main conclusion: the Flexer provides some of the more-intense clit stimulation out of the dual-stim wearables I have tested, and I can orgasm with it hands-free. The vibrations are buzzy and the flexing motion on your clit can be overstimulating at times though.

If more consistent clit pressure and rumbliness matters most, go with the Lovense Dolce, which doesn’t have a movement motor. If you’re interested in the motion and enjoy buzzy vibes, stick with the Flexer.

The Niki’s clit motor hits a top power of 8.0 out of 10 – great power, but not the strongest panty vibrator out there. Both the Lovense Ferri and NS Novelties Techno Lucy are stronger on high power, though both are also noticeably buzzier than the Niki. Where the Niki stands out isn’t raw power, though – it’s that the broad, flexible, curved design delivers that power to your body unusually well – essential for good stimulation in a hands-free toy. Among panty vibrators, only the Ferri transfers more of its motor’s strength to the clit.

For me, the Niki’s 8.0 top strength is enough power to orgasm hands-free. If top vibration strength is your main priority, go with the Ferri – but the Niki is plenty powerful for most people.

The Niki has six power levels spanning a wide range, from a very gentle 1.0 for warmup up to 8.0 at the top. That low end matters more with a wearable than with a handheld because you can’t just lift a panty vibrator off your body when things start feeling too intense – it’s nice to be able to dial down without reaching to pull the toy out of place.

Vibration transfer is where the Niki really stands out from most panty vibes. With a handheld you can position the vibrator exactly where you want it and just press harder to make the vibes feel more intense; with most wearables, you can’t, so the toy’s shape has to naturally transfer the vibrations where they should go. And the Niki’s shape does that well – its broad, flexible, curved design stays consistently in contact with my body transferring the vibrations right to my clit.

I wear it two different ways: with the top near my clit and the back end toward my vagina, or my preferred “upside-down” way with the top just under my clit and the rest of the toy wrapped up around my pubic bone. The vibrations transfer really well either way, but the toy stays even tighter to my body with the upside-down method.

The Niki’s curve also lets you press harder when you want to for more stimulation – something flat panty vibes can’t do. When you’re sitting, you can shift your weight against the end of the toy that’s opposite your clit. The surface pushes against the base and the curve tilts the clit end to press more firmly into you making the vibes feel stronger. It’s the closest a hands-free wearable gets to the better pressure control of a handheld.

The Flexer’s clit motor is very strong, reaching 9.1 out of 10 on high – one of my strongest wearables. And it still starts gently enough that I can warm up before using the stronger settings.

With wearables, strong motors only matter if the toy keeps that motor in contact with your body. In bed, the Flexer does that well, but in a unique way: When the flexing motion is active, the external arm moves back and forth, varying the clit pressure. This makes the stimulation feel stronger and more interesting to me as the external arm presses those vibrations firmly into my clit.

The Flexer is a good fit if you like movement and intensity shifts, but some will prefer consistent contact instead. If you want a dual-stimulation toy that stays in one spot and a more controlled feel, go with the vibration-only Lovense Dolce. The Lelo Ida Wave’s clit stimulation is also more consistent and rumbly while also providing G-spot stimulation from motion.

We rate rumbly vibrations higher than buzzy ones because most people prefer rumbly. But it’s a personal preference, and some people like buzzy vibrations more.

The Niki is the most rumbly panty vibrator we’ve tested. Every other panty vibrator I’ve tested – the Lovense Ferri, We-Vibe Moxie+, NS Novelties Techno Lucy, and Romp Party – center around around the moderately or extremely buzzy frequency range. The Niki is the only one with a primarily rumbly clit motor.

The Niki’s lowest settings are extremely rumbly, the middle settings stay moderately rumbly, and only the very top setting feels neutral – never becoming buzzy. All the other panty vibrators we’ve tested become buzzy on their top settings. The Niki’s rumbliness has real power behind it too – the motor is strong as well as deep.

If rumbliness is what you want from a panty vibrator, the Niki is the best choice – no other panty vibrator I’ve tested comes close. If you care more about raw power than rumbliness, the Ferri is excellent – it’s less rumbly, but it’s stronger with excellent vibration transfer, and I can orgasm hands-free from it just as easily as from the Niki.

We generally rate rumbly vibrations higher because most people enjoy them more, but buzzy versus rumbly is still a preference. The Flexer’s clit motor is for people who like strong, extremely buzzy intensity. It’s actually my buzziest dual-stimulation wearable.

The clit vibrations range from 139.59 Hz on low to 244.51 Hz on high – extremely buzzy throughout its entire range. The two vibration motors create a faint wobble sensation when they play off each other, which adds some complexity. But the Flexer is not at all rumbly.

If buzzy vibrations feel tickly or numb to you, the Lovense Dolce or Lelo Ida Wave are better.

Like all panty vibrators, the VeDo Niki only stimulates your clit – not your G-spot. Since most women need clit stimulation to orgasm, a panty vibrator is often the right type of wearable. But if you’re interested in G-spot stimulation instead, see all our recommendations for the best egg vibrators here.

In the next sections, I’ll cover the Flexer’s G-spot vibration power, rumbliness, and flexing motion.

Here’s the main conclusion: the Flexer’s G-spot stimulation is good for a dual-stim wearable, but the flexing motion contributes less than you’d expect. The external arm moves more than the internal arm with each flex, so you can feel some internal pressure, but it’s gentle.

Thankfully, the bulbous design transfers the vibrations well to the front wall. So the combination of internal vibes and gentle movement combines for an enjoyable experience.

But handheld vibrators provide much firmer front-wall pressure since you can leverage the base with your hand. Two of my favorites are the We-Vibe Nova 2 and Lovense Nora.

The Flexer’s G-spot vibrations reach a moderate 4.9 out of 10 strength that enhances the experience when paired with the toy’s external vibes and flexing motion. I’m able to orgasm with the Flexer when the internal and external vibrations work together with the flexing motion.

But, the Lovense Dolce’s internal arm has nearly double the vibration strength of the Flexer. Both have an excellent, bulbous design that transfers the vibrations efficiently to the front wall.

If you find even gentle internal motion more stimulating than vibrations, the Flexer is a great option. If you don’t need motion, and feel stimulated from internal vibrations alone, the Dolce will feel the strongest to you.

We rate rumbly internal vibrations higher because they tend to feel deeper, though some people enjoy buzzy stimulation. The Flexer’s G-spot motor stays extremely buzzy across its entire range, from 182.44 Hz on low to 257.18 Hz on high.

Buzzy vibrations don’t travel as deep, so the buzzy vibrations at only a moderate strength on the Flexer definitely need the internal motion and external vibes to feel worthwhile.

If rumbliness is a priority, the Lovense Dolce is a much better pick.

The Flexer’s motion is enjoyable, but it feels more like subtle internal pressure changes than the firm G-spot fingering that’s advertised.

The internal arm moves in a front-to-back arc at 34 to 63 cycles per minute. The flexing hinge is very strong, and doesn’t “give” under pressure like the flexible Lelo Ida Wave’s internal arm does. However, because there’s no “anchoring” point for the Flexer, the external arm moves more than the internal arm, causing the G-spot pressure to feel gentle. You really feel most of the motion on your clit.

I can orgasm with the Flexer when the motion is paired with clit vibrations and internal vibes. But handheld toys provide firmer internal pressure if that’s a big priority to you. The We-Vibe Nova 2 is great if you want to leverage the pressure yourself. And the Lovense Nora is better if you want automatic internal motion.

The VeDo Niki isn’t controlled through an app. App control lets you create custom patterns, control multiple motors or toys, play long-distance, and lets a controlling partner see exactly what your toy is doing. If that matters to you, see our app-controlled recommendations in these guides:

• best remote and app-controlled vibrators (all types of vibrators)
• best wearable vibrators (wearables only).

In the next sections, I’ll cover the Lovense app’s close-range features, long-distance features, and connectivity in detail.

Here’s the main conclusion:

The Lovense app is by far the best of any brand. It provides the most control, is easiest to use, and has the most reliable connectivity. If an outstanding app is your top priority, stick to a Lovense toy.

The Lovense Flexer’s app has the best close-range features of any brand.

On the main Remote screen, you drag the control dots up or down to adjust intensity of the vibrations and speed of the flexing motion.

Tap Float to hold a steady power/speed, or Loop to draw a custom pattern that repeats. Since the toy reacts as you draw, you can feel the pattern in real time instead of creating it blindly and testing it later. If you like what you made, tap Record to save it to My Patterns.

Lovense typically allows separate control of each motor. Unfortunately, the two arms’ separate vibrating motors are tied together. Setting the vibration intensity of the internal arm does the same to the external arm. But the flexing motion is still controlled separately.

For presets, the My Patterns screen includes Lovense’s default patterns, anything you’ve saved, and patterns downloaded from Lovense’s active community library.

Lovense’s sound-reactive mode is also the best I’ve used. You can set a minimum decibel threshold, so the toy stays still until the room gets loud enough, and adjust sensitivity to control how much of the toy’s power range it uses. The live decibel readout makes it easy to calibrate. Many other apps either combine these controls or don’t offer a threshold at all.

The music-sync mode works with Spotify or local files and follows the music well enough for hands-free variation. You can cap the intensity to keep it in your comfortable range.

Lovense also includes a few useful extras: Voice Control, device-to-device control with certain Lovense toys, and per-toy max intensity settings. The intensity cap is helpful if you want to limit noise or prevent a partner from setting the toy too strong.

Overall, the Lovense app’s close-range features are excellent – and the best of any brand I’ve tested.

Lovense also has the best long-distance experience of any brand, by a wide margin.

During messaging or video calls, your partner gets the same excellent Remote screen used for close-range control. They can set a steady intensity or flexing speed with Float or draw a repeating pattern with Loop, so long-distance control doesn’t feel stripped down. The only small downside is that you can’t control your own toy during a video call – only your partner can.

The video call tools are excellent. Incoming calls are easy to notice and accept, and once you’re in a call, the video feed is clear. You can mute, toggle your camera, switch between front and back cameras, cast audio to a speaker, or end the call. The controls stay out of the way until you tap the screen, and you can move your self-view so it doesn’t block your partner.

The app also handles normal phone use well. You can lock your screen or switch to another app without disrupting the session.

Messaging is equally strong. The thread is easy to follow, and you can send voice notes, photos, and videos from your camera or camera roll. There’s also an optional “burn after reading” feature for one-time viewing that prevents screenshots, and it works as intended.

Lovense gives you helpful partner settings too. You can let a trusted partner auto-accept control requests, get a notification when they come online, or hide your online status from specific people. Each partner can have different settings.

Lovense also offers the broadest anonymous and group control options. You can send a one-time control link or create a group link for up to 10 people. When the time runs out, they lose access and can’t request control again.

If long-distance play is the main reason you’re buying a wearable vibrator, Lovense is the best choice.

The Flexer’s connectivity is excellent. Lovense has the most reliable app connection of any brand I’ve tested, both for nearby Bluetooth control and long-distance play.

Pairing is quick: the very first time you connect, just tap Add Toy, turn the Flexer on, and it appears in the app within seconds. After that first setup, it auto-connects as soon as you turn it on with the app open.

Once paired, the Flexer stays connected through normal phone use, including locking your screen, switching apps, or leaving the app idle.

It also handles body interference very well. Body tissue can weaken Bluetooth more than walls or clothing, which is why some wearable vibrators work fine for solo control but drop connection when a partner controls them from certain angles. In our body-interference test, the Flexer stayed connected through all three positions, including the hardest one.

Bluetooth range was excellent too, reaching about 315 feet in our clear line-of-sight test. That’s one of the longest ranges we’ve measured for a wearable and far more than most people will need. Though walls and other interference will shorten real-world range.

If the it does disconnect, the app reconnects automatically once the signal is clear. A red “Reconnecting…” message also tells the controlling partner that control has paused. You can choose whether the toy stops vibrating during a disconnect with Auto-Stop, or keeps vibrating at the last intensity level until it reconnects.

Long-distance connectivity is also excellent. The toy connects to your phone over Bluetooth, and your phone connects to your partner’s phone over Wi-Fi or cell data. Since the Bluetooth connection is strong, long-distance play works well as long as your internet connection is decent. Sessions stay stable, commands go through reliably, and locking your phone or switching apps doesn’t disrupt control.

One quirk: if you start a session on Wi-Fi and then switch to cell data, the first switch can drop control and require a quick re-invite. After that, switching works normally. To avoid this, start the session on cellular data – then you can switch freely between the two.

In the next sections, I’ll cover the Niki’s remote features and connectivity.

Here’s the main conclusion:

The Niki has one of the better panty-vibe remotes – reliable connection, quick response, and fast, direct power buttons. Its main limitations are typical of remotes versus apps: less partner feedback and shorter range. Go with the Lovense Ferri for app control, but the Niki has great remote control, which can be nice if you don’t want you or a partner to be tied to a phone.

The Lovense Flexer doesn’t include a physical remote control. A remote lets you adjust the toy by feel – without pulling out your phone. Though there’s other downsides like less depth and no visual feedback to help your partner know what your toy’s doing. If you want to consider options with physical remotes, see our recommendations in these guides:

• best remote and app-controlled vibrators (all types of vibrators)
• best wearable vibrators (wearables only).

The Niki’s remote is great with a few minor downsides – most of which are typical of remotes compared to apps.

Power control is fast and direct – you can move forward and backward through the six power levels with dedicated + and – buttons. Pattern navigation uses a single-button cycle loop – clicking forward through the nine patterns one at a time, with no way to go backward to a previous pattern. In practice this doesn’t matter that much, since most people stay on steady vibrations rather than cycling through patterns. You can also adjust the intensity of each pattern.

The remote is comfortable to hold, but the buttons themselves are less tactile than the best panty-vibe remotes – they’re not raised enough to tell which is which by feel, so I have to look at the remote to find the right button – something you get used to as you use the remote more.

Like most remotes, the Niki’s gives your partner just a faint blink when you press a button – no way to tell what setting your toy is on. That’s fine if you’re using the Niki yourself and many partners won’t mind. Others find it less engaging when they can’t tell what your toy is doing and what you’re actually feeling. An app-controlled panty vibe gives your partner real-time visuals of the toy’s vibrations, which makes controlling it feel more engaging. If that’s a priority for you, the Lovense Ferri is the best app-controlled panty vibe, and Lovense has the best app of any brand.

The Niki’s remote connectivity is excellent, though its maximum range lands in the middle of the pack.

Body tissue between a remote and toy is typically the main thing that breaks a remote’s signal during partner control, but the Niki holds up well to this. Our body-interference test simulates this scenario at three progressively challenging angles, and the Niki holds a stable connection through all of them. Our test runs harsher than typical real-world conditions, so partner-controlled play should stay reliable in practice.

Button presses register with barely any delay – the toy reacts the moment my finger leaves the button, keeping the rhythm of play intact. And theres no reconnection routine required when starting to play – the remote is always connected.

The remote reaches about 60 feet in our open-air range test – measured with clear line-of-sight and no body interference. This is middle-of-the-road for the wearable vibrators’ remotes we tested and real-world range will likely be shorter once objects and body interference come in. But this gives you enough flexibility for most activities, and especially any same-room use. If you need an especially long range, many app-controlled toys stay connected farther – for instance, the Lovense Ferri stayed connected until 190 feet in our same test.

Like most wearable vibrators the Niki’s on-toy controls are limited by design, since you’ll typically use the remote to control it. There’s a single button that cycles through a steady vibration and nine patterns – all at one fixed intensity. To use the toy’s full six-level power range, you need the remote.

The button itself has a subtle feel and sits further back on the toy, so it takes some reaching to press if for some reason you want to change settings without the remote. When you do press the button, the toy’s broad, flexible shape keeps the pressure comfortable against your body. The on-toy button works as a backup, but the remote is the main way you’ll use the Niki.

The Flexer’s on-toy controls work as a backup, but the app is the main way to use this toy. A single button cycles through three power levels and four patterns on the same loop, with the vibration and motion functions linked together.

Lovense lets you customize the three on-toy preset power levels in the app so the button provides access to the levels you like. This can be useful if you don’t want to mess with the app for quick, immediate interaction.

However, the button sits far enough back on the toy that it’s annoying to reach while using. So the app is really what you should count on in typical use.

In my experience the Niki stays securely in the ideal place when wearing it in bed and during normal everyday activity like walking or going up and down stairs – but it shifts more during heavy movement like running or jumping.

The Niki’s broad, flexible, curved design contours to your body, so it stays snug and doesn’t shift during light activity the way some slimmer or straight panty vibrators can. It’s also secured to your underwear by a magnet – essential for any panty vibrator to fit securely. The Niki’s magnet is on the weaker side compared to other panty vibrators, but in normal wear that’s not really an issue – the form-fitting shape prevents the kind of shifting, tilting, or movement that would pull the magnet off, and the magnet itself is slim and form-fitted to the toy so it doesn’t get bumped off easily. The magnet can come loose when you actively re-position the toy in your underwear, but otherwise has stayed attached for me.

Heavy activity is not as good. When running, the toy bounces on landings and the stimulation briefly pulls away before gravity returns it. With jumping jacks, it slid further down in my underwear, and I had to adjust the placement afterward. It never fell out, but during vigorous movement the form-fitting shape can’t fully prevent the toy from shifting, and the relatively weak magnet doesn’t pick up the slack the way a stronger one can.

If you specifically want a panty vibrator that holds securely under intense movement, the NS Novelties Techno Lucy holds up better. Otherwise, the Niki’s fit is reliable for the way most people will actually use it.

The Flexer’s fit is workable when using it hands-free in bed, but it moves around a lot and does not feel secure when walking. Some of that movement is intentional – the flexing arm presses both internally and externally. But it also makes the stimulation feel a bit chaotic and less secure.

The bigger issue is that the Flexer is rigid and not adjustable. If the shape lines up well with your anatomy, it can be very stimulating. If it doesn’t, there’s not much you can do to improve the fit. That makes it a riskier pick than adjustable dual-stim toys like the Lovense Dolce, which stays in place better and has a good adjustable spine to help you get a better fit for your individual anatomy.

The Flexer feels least secure when the flexing motion is on. With vibrations alone, it’s more stable, but still has a “half in” feeling that makes me less confident moving around. During light activity, especially bending or squatting, I worry it could work its way out. And it’s not comfortable to wear when moving around anyway.

I’d treat the Flexer as an in-bed toy, not something for walking around. For dual-stimulation you can wear around more easily, try pairing the Lovense Ferri with the Lovense Lush 4 or Lush Mini.

The Niki is one of the most comfortable panty vibrators I’ve tested, and the comfort holds up just as well when I’m moving around as it does lying in bed.

That’s less common than you’d expect. Most panty vibrators are noticeably less comfortable during light activity than lying down – mostly because toys can poke or apply uneven pressure when walking – but not for the Niki. The Niki’s broad, flexible, curved shape distributes pressure evenly across my body, so there’s no digging in, no pinching when I close my legs, and no uncomfortable tapping when I move. It blankets the area rather than pressing into a single spot.

One wear note: I find the Niki most comfortable when worn upside-down (so the charging port end is facing upward), with the toy’s curve wrapping up around my pubic bone. The reverse orientation is still great, but “upsidown” is slightly more comfortable and stimulating for me.

The Flexer can be an uncomfortable dual-stimulation wearable, and takes some warmup and unique preferences to enjoy. It is rigid, girthy, and the flexing motion can pinch against my pubic bone.

It’s best for those who prefer a fuller internal feel, and don’t mind firm pressure on your clit.

I find it most comfortable lying in bed. Sitting up or bending forward makes it feel too tight. Walking around is worse – my movement feels restricted in normal activities like walking, stairs, standing, or sitting.

This might be fine for those who value the strong, unique stimulation it provides. But if comfort is a priority, the Fantasy For Her G-spot Stimulate-Her is one of my most comfortable dual-stimulation wearables in bed. Or, egg and panty vibrators are more comfortable to wear around.

The VeDO Niki is a very quiet panty vibrator – one of the areas it outperforms the Lovense Ferri a bit. Decibel readings on both low and high power were too quiet for our Sound Level Meter to pick up on – the ambient room noise was 35 dBA, and the Niki never measured higher than this.

It’s in the most discreet group of wearables I’ve tested for our Background Noise Masking subtest. I wear the toy while my partner listens from three feet away and we play pink noise through a speaker at quiet, moderate, and loud volumes (56, 62, and 68 dBA). My partner couldn’t hear the Niki at any vibration strength under any of our three tested volumes of background noise. It is definitely audible in our room without any background audio playing – but every wearable vibrator I’ve tested is audible in a fully silent room, no matter how gentle and quiet its vibrations are.

For our closed-bedroom-door test, my partner stands directly outside the bedroom while I use the toy in bed. I use it like a handheld toy since wearing dampens sound, and some people want the flexibility to safely re-position the toy or move it around – holding it instead of wearing it gives us the most conservative results. My partner couldn’t hear the Niki on its low or middle power levels. He could just barely hear it on high in our completely silent house – pretty faint, and easily masked by cars passing by outside. When I re-checked while actually wearing the Niki, the sound was significantly dampened and he couldn’t hear it on any setting.

The Flexer is very loud. The vibrations are high-pitched and buzzy, and the flex motor adds a distinct non-constant mechanical sound that draws attention.

Decibel readings were 49.7 dBA on low and 54.7 dBA on high. Those numbers are not extreme, but the high-pitched, uneven sound makes it easier to hear.

In our background noise masking test, I wear the toy while my partner listens from three feet away and we play pink noise through a speaker at quiet, moderate, and loud volumes. Even with our loudest background audio playing all the Flexer’s settings were audible – low power was barely noticeable, but middle and high were still unmistakable.

We also check whether my partner can hear me use it behind our closed bedroom door. The middle and high powers were audible. A box fan helped enough that high power was barely audible and probably would not be noticed in normal use. To be completely masked, I had to play music in the bedroom.

If you want dual-stimulation from motion that’s quieter, consider the Lelo Ida Wave.

The Niki has a short battery life. It lasted 55 minutes continuously running at its highest power during our test – below the higher-end panty vibrators. Since you’ll use the Niki’s lower power levels too, your real-use runtime will likely be longer.

If long battery life is a priority, go with the Lovense Ferri – it lasted 168 minutes during our test, about three times the Niki’s runtime.

The Lovense Flexer has a great battery life, lasting 95 minutes on high in our test. That’s comparable with or better than other dual-stimulation wearables, and plenty for most in-bed or long-distance sessions.

Cleaning the Niki is straightforward in practice, but our rating is conservative because we couldn’t confirm the toy’s exact waterproof status. VeDO lists it as “splashproof – suitable for shower” on their site, which usually corresponds to an IPX5 or IPX6 rating. Products with those ratings are safe to clean under a running faucet or use in the shower, but IPX4 products (which are also sometimes called “splashproof”) are not. We emailed VeDO to confirm the exact IPX rating and didn’t hear back, so we rated the Niki’s cleaning based on not being able to run it under a faucet.

In practice I do run most of the Niki under a faucet without being especially careful, just keeping water away from the charging port and wiping that area with a cloth. I haven’t encountered any issues.

The Flexer is IPX7 waterproof and easy to clean with soap and water. You can rinse it thoroughly after use, including at the hinge, where the internal and external arms meet.

The Niki feels well-built. It’s coated in smooth silicone with a small plastic section around the charging port, and the toy’s slight flex feels sturdy and adds to its comfort. I’ve had mine since 2021 and it’s continued to operate as expected. The plastic remote is very lightweight and cheap-feeling, but it functions well.

The Flexer feels sturdy and well-built. I’ve had mine since 2022 and it’s still working how it did when I first got it.

It is covered in smooth, firm silicone, and the connecting arm between the internal and external sections is very strong. The flexing movement comes from the motor, not from the toy feeling floppy or manually bendable.

That rigidity contributes to the comfort problems, but it also makes the toy feel durable.

My main frustration with the build has to do with noise. The flex motor can be especially high-pitched in a cheap-sounding way. It’s not as quiet as premium options like the Lelo Ida Wave.