# Fasting Timer vs ONE

The clearest difference is in-app purchases: Fasting Timer at none against ONE's 6. Fasting Timer also leads on update cadence (daily vs every 4 weeks) and iOS requirement (13.0 vs 15.1). ONE's advantage is ads (none vs shown) and device support (4 vs 2). On price there is nothing between them.

Both are free to download. ONE sells 6 in-app purchases, starting at $2.99 per 7 days. Fasting Timer asks for nothing beyond the download.

Fasting Timer ships an update daily, ONE every 4 weeks. The most recent releases landed on September 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Fasting Timer | ONE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/oneintermittent-fasting/id6759722688/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 4 weeks |
| Monetization | — | Freemium |
| Size | 33 MB | 49 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [Batuhan Senavci](https://appshunter.io/developer/1875041796) | [Create Rush](https://appshunter.io/developer/1880351509) |

## What reviewers say

### Fasting Timer

[App page](https://appshunter.io/ios/app/fasting-timer-if-tracker/id6759716682)

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

**In-app purchases:** none


### ONE

[App page](https://appshunter.io/ios/app/oneintermittent-fasting/id6759722688)

This app simplifies intermittent fasting with a one-tap timer and progress tracker. It guides users through fasting stages, offers various plans, and provides insights into body changes. The focus is on building consistent habits without unnecessary complexity.

**Highlights:** One-tap fasting timer, Live fasting stage tracking, Multiple fasting plan options, Daily streak tracking, Weight and water tracking, AI-powered progress summaries, Offline functionality

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Weekly | $2.99 | per 7 days |
| Premium Weekly | $4.99 | per 7 days |
| Standard Monthly | $4.99 | per month |
| Premium Monthly | $9.99 | per month |
| Standard Yearly | $49.99 | per year |
| Premium Yearly | $99.99 | per year |


## Frequently asked questions

### Is Fasting Timer free?

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

### Is ONE free?

ONE is free to download, with in-app purchases available.

### Do Fasting Timer or ONE have ads?

Fasting Timer shows ads; ONE does not.

### Which is updated more often, Fasting Timer or ONE?

Fasting Timer ships an update daily, and ONE every 4 weeks. Most recently, Fasting Timer was updated on September 12, 2026 and ONE on October 1, 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.*