# STRYXX vs PerfectFast

The clearest difference is update cadence: PerfectFast at every 9 days against STRYXX's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

STRYXX ships an update every 3 weeks, PerfectFast every 9 days. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | STRYXX | PerfectFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/perfectfast-fasting-timer/id6759067877/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | — | Free |
| Size | 100 MB | 32 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [FITsociety BV (Apps)](https://appshunter.io/developer/1756257213) | [Idan Lupinsky](https://appshunter.io/developer/1876630037) |

## What reviewers say

### STRYXX

[App page](https://appshunter.io/ios/app/stryxx/id6748530388)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### PerfectFast

[App page](https://appshunter.io/ios/app/perfectfast-fasting-timer/id6759067877)

This app helps you track intermittent and extended fasting periods with a clean, focused interface. It supports various fasting schedules, custom durations, and provides detailed history and statistics to monitor your progress.

**Highlights:** Intermittent and extended fast tracking, Custom fasting schedules, Fasting history and statistics, Reminders and notifications, Apple Watch companion app, Live Activity support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is STRYXX free?

STRYXX is free to download, with no in-app purchases.

### Is PerfectFast free?

PerfectFast is free to download, with no in-app purchases.

### Do STRYXX or PerfectFast have ads?

Neither STRYXX nor PerfectFast shows ads.

### Which is updated more often, STRYXX or PerfectFast?

STRYXX ships an update every 3 weeks, and PerfectFast every 9 days. Most recently, STRYXX was updated on October 10, 2026 and PerfectFast on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*