# JustFast vs Simple Fasting Timer

The clearest difference is in-app purchases: JustFast at none against Simple Fasting Timer's 1. Simple Fasting Timer's advantage is update cadence (daily vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Simple Fasting Timer sells 1 one-off in-app purchase. JustFast asks for nothing beyond the download.

JustFast ships an update fortnightly, Simple Fasting Timer daily. The most recent releases landed on September 28, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | JustFast | Simple Fasting Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/justfast-timer/id6775042519/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free | — |
| Size | 20 MB | 2 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vitalii Vyrodov](https://appshunter.io/developer/1588698342) | [Serghei Eschin](https://appshunter.io/developer/6774241012) |

## What reviewers say

### JustFast

[App page](https://appshunter.io/ios/app/justfast-timer/id6775042519)

This app offers a straightforward intermittent fasting timer. It focuses on tracking your fast with a clear, calm interface, providing insights into metabolic stages without gamification or pressure. It prioritizes privacy with on-device data storage and no accounts.

**Highlights:** One-tap start and stop, Live timer with accurate timekeeping, Metabolic milestone tracking, Plain-language explanations of milestones, Adjustable start/stop times, Ongoing notification for duration, Simple history of past fasts, 18 languages and dark design

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

**In-app purchases:** none


### Simple Fasting Timer

[App page](https://appshunter.io/ios/app/simple-fasting-timer-168/id6787884048)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is JustFast free?

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

### Is Simple Fasting Timer free?

Simple Fasting Timer is free to download, with in-app purchases available.

### Do JustFast or Simple Fasting Timer have ads?

Neither JustFast nor Simple Fasting Timer shows ads.

### Which is updated more often, JustFast or Simple Fasting Timer?

JustFast ships an update fortnightly, and Simple Fasting Timer daily. Most recently, JustFast was updated on September 28, 2026 and Simple Fasting Timer on September 11, 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.*