# Atomic Fast vs Vitra

The clearest difference is ratings volume: Atomic Fast at 31 against Vitra's 6. Atomic Fast also leads on device support (3 vs 1). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Atomic Fast sells 3 in-app purchases, starting at $4.99 per month and Vitra sells 2 in-app purchases, starting at $9.99 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 — 5.0 for Atomic Fast against 5.0 for Vitra. That said, the two scores are not equally well evidenced: Atomic Fast has 31 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 96% of Atomic Fast's written reviews are positive against 100% of Vitra's.

Atomic Fast ships an update every 4 days, Vitra every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Atomic Fast | Vitra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (31 ratings)](https://appshunter.io/ios/app/atomic-fast-fasting-and-diet/id6763870543/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/vitra-calorie-tracker/id6792379094/reviews) |
| Number of ratings | **31** | 6 |
| Positive reviews | 96.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Freemium | Freemium |
| Size | 22 MB | 7 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Startise](https://appshunter.io/developer/1895534080) | [Velora Technologies LLC](https://appshunter.io/developer/6792379097) |

## What reviewers say

### 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 |


### Vitra

[App page](https://appshunter.io/ios/app/vitra-calorie-tracker/id6792379094)

This AI-powered health companion helps you easily track calories, macros, and micronutrients. It offers instant meal scanning via camera, a vast food database, and personalized daily nutrition insights to support your health goals.

**Highlights:** AI Meal Scanner, Extensive Food Search, Personalized AI Insights, Bloodwork & Weight Tracking, Custom Macro/Calorie Targets, Daily Health Score, Habit Tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vitra Pro Monthly | $9.99 | per month |
| Vitra Pro Annual Subscription | $89.99 | per year |


## Frequently asked questions

### Is Atomic Fast free?

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

### Is Vitra free?

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

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

Atomic Fast and Vitra are both rated 5.0 out of 5 on the App Store, from 31 and 6 ratings respectively.

### Do Atomic Fast or Vitra have ads?

Neither Atomic Fast nor Vitra shows ads.

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

Atomic Fast ships an update every 4 days, and Vitra every 5 days. Most recently, Atomic Fast was updated on November 5, 2026 and Vitra on October 31, 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.*