# PerfectFast vs Lull

The clearest difference is update cadence: Lull at daily against PerfectFast's every 9 days. 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.

PerfectFast ships an update every 9 days, Lull daily. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PerfectFast | Lull |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/perfectfast-fasting-timer/id6759067877/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Daily** |
| Monetization | Free | — |
| Size | 32 MB | 1 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Idan Lupinsky](https://appshunter.io/developer/1876630037) | [Markus Füller](https://appshunter.io/developer/1882820975) |

## What reviewers say

### 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


### Lull

[App page](https://appshunter.io/ios/app/lull-60s-breathing/id6761730244)

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

**In-app purchases:** none


## Frequently asked questions

### Is PerfectFast free?

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

### Is Lull free?

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

### Do PerfectFast or Lull have ads?

Neither PerfectFast nor Lull shows ads.

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

PerfectFast ships an update every 9 days, and Lull daily. Most recently, PerfectFast was updated on October 28, 2026 and Lull 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.*