
Gather round; I come bearing good news. A sex toy company actually made improvements that turned their okay toy into a great toy. HALLELUJAH, praise the vibrator lord!!
Nearly 3 years ago, I reviewed the Monster Pub Doctor Whale, a wearable, app-controlled dual-stimulation vibe designed not only to feel good but also to help you do daily Kegel workouts. While I thought the aesthetic of that little whale was cute, and the idea behind it was inventive, in practice it just… wasn’t that great. The whale’s tail, meant to please your clit while the whale’s body is inside your vagina, barely reached or stimulated my clit at all. Worse yet, the accompanying smartphone app was overly busy and sometimes incomprehensible, and the toy’s Bluetooth connectivity was incredibly patchy, such that it could rarely stay connected to my phone for the duration of a set of Kegel exercises, let alone a masturbation session.
I wrote at the time, “I think this line of toys has a lot of potential; the designers just need to fix the connectivity issues, tighten up the app, and maybe construct a more stimulating tail for this li’l whale.” And guess what? THEY ACTUALLY DID ALL OF THAT. Yessss!
The updated version Monster Pub sent me is called the Mister Devil – specifically, the “2 premium app track” version, which, per Monster Pub’s FAQ page, has extra features some of the other versions don’t, including dual motors, motion control, and “smart heating.” Cheaper and less decked-out iterations of the toy range in price from $50-80 – actually pretty reasonable for a silicone app-controllable vibrator – but the version I’m reviewing today is the priciest one, at $150.
At first, I wasn’t sure which side of the vibe was meant to be inserted, but the instructions noted that the bigger side – the devil’s head – is the side that contains the motion sensor for the toy’s Kegel functionalities, so that’s the one that should be inserted. There are two “devil’s horns” on that side that are a little uncomfortable upon insertion, but once inside, I don’t find them especially noticeable. The smaller, external arm has some ridges on it that don’t do much for me in terms of stimulation, but seem to help the toy stay anchored in place better, even when I’m not wearing underwear.
That clitoral arm is one of the most notable changes from the older Monster Pub vibe I tried. It’s substantial and firm enough to stay put against my clit, and plenty long enough to actually reach it (although, if the distance between your vagina and clit is on the shorter side, you may find that this arm overreaches your clit and potentially pokes you in the mons). It also has its own motor this time around, which should always be the case for toys like these, because vibration radiating from an internal motor to your clit is likely to be weak and muted. Clits deserve their own motors, dammit!
Speaking of motors… The ones in this toy are rumblier and stronger than I would have predicted for a toy of this size, especially one from a relatively little-known company. I can feel them throughout my clitoral network when the toy is in use. Sometimes they irritate my G-spot a little, but I’m not the biggest fan of G-spot vibration in general, so your mileage may vary. I particularly enjoy having my partner rhythmically press their fingers into my external G-spot while the toy is inside me, as this creates pleasant pulsing waves of sensation from the inside and the outside all at once.
While the toy can be controlled without the use of its app, I wouldn’t recommend using it that way. There’s only one button on the toy, and it can be used to cycle through various patterns and speeds, but it’s an annoying process and using the app is much easier and more intuitive. The app (which is available for both iOS and Android) offers multiple different ways of controlling the toy’s vibrations, including a “motion control” mode that makes the vibrations flare up when you shake your phone, a “touch mode” that responds to your fingers swiping/tapping your phone screen, and a series of fixed modes. You can also design custom vibration patterns and download patterns that other users have made.
The strength and speediness of the connectivity between the app and the toy is very impressive, especially considering that big companies like We-Vibe still often struggle with this. We had zero disconnection problems while testing this toy; my We-Vibe Sync, by comparison, tends to disconnect every few minutes – or even more, if there are obstructions like clothing or thighs in the way. The vibrations also seemed to respond in real-time to the motion-control settings. For these reasons, I think this would be a great toy for public play, if you’re into that. It needs minimal readjustment (either physical or technological) once it’s inside you and connected to the app, making it an ideal dinner date companion… when and if we’re able to go on dinner dates again in the future!
The app is confusing at times, I have to say, due to the language barrier. This was a problem the last time I tried one of these toys, too. My partner – an app developer – noted that the app’s tutorial was unclear and its overall layout is chaotic. The provided instructions don’t help much, either. But with experimentation and time, we were able to figure out how to do most of the things we wanted to do. (Still never found the fabled heating mode…)
The flagship feature of Monster Pub vibes, however, is their Kegel exercise system. The toy contains a sensor that can detect how much pressure your pelvic muscles exert on it, so when you load up a Kegel regimen on the app, you can see in real-time how strong your muscles are. The app leads you through a workout involving timed intervals of squeezing and releasing, complete with reminders to inhale and exhale – it’s actually kind of hypnokinky! You can even track your progress over time – the app generates a graph that shows you how much stronger you’ve become as you’ve done more workouts. It’s a super cool feature, and I would definitely recommend this toy over a set of plain ol’ Kegel balls (assuming it’s financially feasible for you) if you’re interested in increasing your PC muscles’ strength, whether for medical reasons or just pleasure-based ones.
Overall, I’m quite impressed by the Monster Pub Mister Devil, and think it’s a fantastic product for people who want a responsive Bluetooth-controllable vibe and/or a cool and fun new way to do Kegel exercises. The premium version is spendy, at $150; if you only want the vibration functions and no Kegel modes, you can get the $90 “Excited Biofeedback” version instead, but if the pelvic health stuff is what draws you to this toy, I don’t think you’re gonna find a better-designed Kegel exercise product than the one I got to try. It’s pleasurable, comfortable, high-tech, and actually helpful for those of us looking to optimize our PC muscles’ functioning. Way to go, Monster Pub!
This review was sponsored. As always, all writing and opinions are my own.



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