Z vs US Cryo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Z
Generate audio frequencies for personal wellness and experimental use. Explore over 1300 sequences for frequency-based practices on your mobile device. This app is for wellness exploration and is not a medical device.
- Rife frequency generator
- Over 1300 sequences
- Audio frequency generation
- Wellness exploration
- Mobile and tablet use
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Z-App is a rife frequency generator designed to generate audio frequencies for wellness. With over 1300 sequences, it allows users to explore frequency-based wellness practices right on their phone or tablet. Disclaimer: Z-App is intended for personal wellness and experimental use only. It is not intended to diagnose, treat, cure, or prevent any medical condition. The frequency lists provided are based on anecdotal and alternative wellness traditions and are not supported by medical evidence. Always consult a healthcare professional before using the app, especially if you have any health concerns. This app should not be used as a substitute for professional medical advice or treatment. Use of the app is at your own discretion.
US Cryo
This app provides access to whole body cryotherapy services for health, recovery, and wellness. It offers a natural and affordable approach to improving your well-being.
- Whole body cryotherapy
- Health and recovery services
- Wellness solutions
- Natural treatments
- Affordable care
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US Cryotherapy, the founders of the whole body cryotherapy industry in the US, offers the safest, most complete care and outcomes for your better health, recovery, and wellness needs all naturally and affordably.
Screenshots
Verdict
The clearest difference is ratings volume: Z at 433 against US Cryo's 2. US Cryo's advantage is rating (5.0 vs 4.8) and iOS requirement (13.0 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
US Cryo holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Z has 433 ratings behind it against 2, so its average is the more settled of the two.
Z ships an update every 2 months, US Cryo every 6 weeks. The most recent releases landed on October 15, 2026 and September 25, 2026 respectively.
| Parameter | Z | US Cryo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (433 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 433 — better | 2 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 56 MB |
| Age rating | 17+ | 4+ |
| Developer | Allt Hitt ehf | USCryotherapy |
Customer experience
Z
US Cryo
Bugs and requests
Z
Reported bugs
5 issues- Freezing during session
- Stopping playback when interrupted
- Compatibility issues with newer OS
- Lack of TMJ frequency
- Unexpected volume adjustments
Requested features
6 requests- Sawtooth tone
- Multiple frequencies
- Play controls
- Dark mode
- Back button
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- Users manual
US Cryo
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Z
No in-app purchases
US Cryo
No in-app purchases
