# Fasting vs Atomic Fast

The clearest difference is iOS requirement: Fasting at 16.4 against Atomic Fast's 18.0. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Fasting sells 16 in-app purchases, starting at $3.99 per 7 days and Atomic Fast sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Fasting against 5.0 for Atomic Fast. Both are backed by a comparable volume of ratings — 25 and 29 respectively. Written reviews are what separate them: 100% of Fasting's written reviews are positive against 96% of Atomic Fast's.

Fasting ships an update every 3 days, Atomic Fast every 4 days. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Fasting | Atomic Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (25 ratings)](https://appshunter.io/ios/app/fasting-intermittent-timer/id6759842051/reviews) | **[5.0 (29 ratings)](https://appshunter.io/ios/app/atomic-fast-fasting-and-diet/id6763870543/reviews)** |
| Number of ratings | 25 | **29** |
| Positive reviews | **100.0% of reviews** | 96.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | Freemium | Freemium |
| Size | 92 MB | 22 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Eduard Bulava](https://appshunter.io/developer/1802549063) | [Startise](https://appshunter.io/developer/1895534080) |

## What reviewers say

### Fasting

[App page](https://appshunter.io/ios/app/fasting-intermittent-timer/id6759842051)

This app simplifies intermittent fasting with visual progress tracking and insights into your body's metabolic zones. It offers various fasting plans, hydration tracking, and achievements to keep you motivated. Advanced features include body tracking, progress photos, and an AI coach for personalized guidance.

**Highlights:** Visual fasting timer with metabolic zone insights, Multiple built-in and custom fasting plans, Hydration and weight/body measurement tracking, Progress photo comparison and time-lapses, On-device AI fasting coach, Live Activities integration for Lock Screen and Dynamic Island, Achievements and shareable progress cards

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastBreak Premium Weekly | $3.99 | per 7 days |
| FastBreak Premium Monthly | $6.39 | per month |
| FastBreak Premium Monthly | $7.99 | per month |
| FastBreak Premium Monthly | $9.99 | per month |
| Omady Premium Monthly | $14.99 | per month |
| Premium Monthly | $14.99 | per month |
| Premium Monthly | $24.99 | per month |
| Premium Anual | $29.99 | per year |
| FastBreak Premium Annual | $31.99 | per year |
| FastBreak Premium Annual | $34.99 | per year |
| FastBreak Premium Annual | $39.99 | per year |
| FastBreak Premium Jährlich | $39.99 | per year |
| FastBreak Premium Annual | $59.99 | per year |
| Omady Premium Annual | $59.99 | per year |
| Premium Anual | $79.99 | per year |
| Lifetime | $79.99 | one-time |


### Atomic Fast

[App page](https://appshunter.io/ios/app/atomic-fast-fasting-and-diet/id6763870543)

This app combines intermittent fasting with AI-powered calorie and macro tracking. It analyzes your eating patterns, hydration, sleep, and activity to provide metabolic insights and a daily readiness score. Seamlessly integrates with Apple Health for a holistic view of your well-being.

**Highlights:** AI calorie and macro estimation from photos, Intermittent fasting timer with metabolic phases, Break-fast meal scoring and suggestions, Connects meals and fasts for holistic insights, Daily readiness score based on health signals, Apple Health and Apple Watch integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atomic+ Monthly | $4.99 | per month |
| Atomic+ Annual | $29.99 | per year |
| Atomic+ Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Fasting free?

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

### Is Atomic Fast free?

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

### Which has better reviews, Fasting or Atomic Fast?

Atomic Fast is rated higher. Fasting averages 4.9 out of 5 from 25 ratings, while Atomic Fast averages 5.0 from 29 ratings.

### Do Fasting or Atomic Fast have ads?

Neither Fasting nor Atomic Fast shows ads.

### Which is updated more often, Fasting or Atomic Fast?

Fasting ships an update every 3 days, and Atomic Fast every 4 days. Most recently, Fasting was updated on October 25, 2026 and Atomic Fast on October 21, 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.*