Kegelia vs Perifit.

Perifit and Kegelia are both apps for pelvic floor training, built on very different mechanics. Perifit pairs its app with an insertable biofeedback device that measures your contraction directly; Kegelia paces the exercise on-screen with no device at all. We make Kegelia, so we'll be upfront about what Perifit does that we don't, then explain where we're different.

iPhone (iOS only for now)

The short version

Perifit is an FDA-cleared biofeedback device, priced around $150, with an app layered on top: insert the probe, and the app turns your actual muscle contraction into a game you can watch in real time. Kegelia is a free-to-start app with no device: a jellyfish paces the rhythm of the exercise, and you follow it rather than being measured by it.

The measured route and the paced one, point by point.
	Kegelia	Perifit
Measurement	Measures nothing. A jellyfish shows the movement and a gentle haptic marks each lift.	Force sensors measure the strength of your contraction and send it to the app in real time.
Assessment limits	It cannot confirm a contraction happened, verify your technique, or give biofeedback. Not a medical device.	Two FDA 510(k) clearances. Its FAQ says it is not designed to treat vaginismus or vulvodynia.
Cost basis	Free to start, no time limit. A subscription unlocks the longer sessions and higher levels.	A one-off device purchase. Perifit sells it in two models.
Setup	Download, choose one, three or five minutes, and start. No questionnaire. iPhone only, iOS 26.0 or later.	Insert the probe and connect over Bluetooth. No charging. iPhone, iPad or Android, with location services on.
Purpose	Built for doing the exercise regularly, in a discreet minute, with no hardware to buy.	Cleared to treat stress, mild-moderate urge and mixed urinary incontinence in women, through exercise.
Perifit facts checked 22 September 2026 against FDA 510(k) summaries K221476 and K231780 and the Perifit FAQ.

What Perifit does well

Perifit measures, Kegelia paces. That's the core difference, and it's a real advantage for Perifit in one specific way: with a probe reading actual muscle contraction, you get direct confirmation you're engaging the right muscle, not just a rhythm to follow. It's an FDA-cleared medical device. For someone who wants confirmed biofeedback and doesn't mind an upfront device cost and insertion, that's a legitimate reason to choose Perifit.

Where Kegelia is different

Kegelia doesn't measure your contraction; it paces it, and we say that plainly rather than implying biofeedback we don't have. What it doesn't require is the rest of the Perifit setup: no device to buy, no probe to insert, and no dedicated moment set aside for a session with hardware. Kegelia works with your phone alone, which is also why it can go fully discreet in stealth mode in a way a physical device can't. It's also built for anyone: Perifit's probe is designed for vaginal insertion, so it's women-only by anatomy; Kegelia's screen-and-haptic pacing works the same way for men and women.

Which should you choose?

If direct biofeedback and an FDA-cleared device matter more to you than price or discretion, Perifit is the one that measures. If you want to start today, for free, with nothing to insert and nothing to explain if someone glances at your screen, Kegelia is built for that. Some people use both: a probe session occasionally, a paced practice daily. See how Kegelia compares to Elvie.

FAQ

What's the actual difference between Perifit and Kegelia?

Perifit uses an insertable device to measure your pelvic floor contraction directly and turns it into biofeedback games; Kegelia uses no device and paces the exercise visually and with haptics, without measuring the muscle itself.

Is Perifit's biofeedback more accurate than Kegelia's pacing?

For confirming that you're engaging the right muscle, yes: a sensor reading actual contraction is more precise than a visual rhythm. Kegelia's jellyfish paces the exercise; it doesn't measure it, and we don't claim otherwise. What Kegelia actually does.

Does Kegelia require buying any hardware?

No. Kegelia works entirely through the app; Perifit requires purchasing its device, priced around $150.

Can men use Perifit or Kegelia?

Perifit's device is designed for vaginal insertion, so it's built for women. Kegelia's app-only approach works the same way for men and women. Kegel exercises for men.

Which one should I pick if I want to be discreet?

Kegelia: stealth mode shows only the jellyfish on your phone screen, with no device to insert or store. Perifit's device setup isn't built for that kind of discretion. How Kegelia stays private.

Try the calm, device-free one.