# Devdy vs PerfectFast

The clearest difference is iOS requirement: Devdy at 11.0 against PerfectFast's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Devdy ships an update fortnightly, PerfectFast every 10 days. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Devdy | PerfectFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/perfectfast/id6759067877/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | — | Free |
| Size | 59 MB | 27 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Devenue Inc.](https://appshunter.io/developer/1691267014) | [Idan Lupinsky](https://appshunter.io/developer/1876630037) |

## What reviewers say

### Devdy

[App page](https://appshunter.io/ios/app/devdy/id6468541269)

**Features:** macOS Compatibility

**In-app purchases:** none


### PerfectFast

[App page](https://appshunter.io/ios/app/perfectfast/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 Devdy free?

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

### Is PerfectFast free?

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

### Do Devdy or PerfectFast have ads?

Neither Devdy nor PerfectFast shows ads.

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

Devdy ships an update fortnightly, and PerfectFast every 10 days. Most recently, Devdy was updated on October 6, 2026 and PerfectFast on October 3, 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.*