Callibri BeFit vs Serene Form
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Callibri BeFit
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Callibri BeFit - the most simple and effective simulator for female "intimate" muscles trainings, without leaving home. Callibri BeFit is based on Biofeedback method and allows you to see how the pelvic floor muscles work in real time and learn to control and train them without pain or discomfort. The application has a number of special techniques developed by leading obstetricians, gynecologists, urologists, proctologists, urogynecologists and sexopathologists. Just choose the one that suits you and start your workout! Training with Callibri BeFit will help not only increase the tone of the vaginal muscles, relieve pelvic and menstrual pain, but also improve the quality of sexual life, increase sensitivity, receive new sexual sensations from a brighter and deeper orgasm / multi-orgasm. Regular exercises will prepare the pelvic floor muscles for childbirth and maintain the physiologically correct position of the reproductive organs.
Serene Form
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he application "Serene FORM" is designed to overcome the effects of stress. The application works in conjunction with an electronic device that registers physiological parameters from the user's body that objectively reflect his psycho-emotional arousal in real time. The training procedure is not associated with conscious or volitional efforts and occurs through a method known in science as operant conditioning (B.F. Skinner). In practice, the training procedure consists in watching a movie that the user chooses himself. At the same time, the screen with the film periodically turns on and off synchronously with changes in the user's psycho-emotional arousal. This kind of reward and punishment allows the brain to select its internal states and restructure its own work in order to resist the negative effects of stress on the body. 30 sessions of 20 minutes are required each to achieve a reliable result, which will be confirmed by independent testing. To control the result of the training, the application has a built-in test for assessing situational anxiety.
Screenshots
Verdict
The clearest difference is update cadence: Callibri BeFit at every 3 months against Serene Form's every 6 months. Serene Form's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Callibri BeFit ships an update every 3 months, Serene Form every 6 months. The most recent releases landed on October 27, 2026 and October 11, 2026 respectively.
| Parameter | Callibri BeFit | Serene Form |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months โ better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod โ better |
| Requires iOS | 16.0 | 15 โ better |
| Further details โ not scored | ||
| Size | 247 MB | 119 MB |
| Age rating | 17+ | 4+ |
| Developer | BRAINBIT INC. | Advanced Yoga Therapy, Inc |
In-app purchases
Callibri BeFit
No in-app purchases
Serene Form
No in-app purchases
Questions
Is Callibri BeFit free?
Is Serene Form free?
Do Callibri BeFit or Serene Form have ads?
Which is updated more often, Callibri BeFit or Serene Form?
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