# AI Calorie Tracker vs Sour

The clearest difference is update cadence: Sour at every 3 weeks against AI Calorie Tracker's every 12 months. AI Calorie Tracker's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AI Calorie Tracker sells 2 in-app purchases, starting at $4.99 per 7 days and Sour sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

AI Calorie Tracker ships an update every 12 months, Sour every 3 weeks. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | AI Calorie Tracker | Sour |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai-calorie-tracker-bitely/id6747688524/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Size | 64 MB | 52 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tetiana Oliinyk](https://appshunter.io/developer/1816320217) | [Bartolomeo Steccanella](https://appshunter.io/developer/6775868763) |

## What reviewers say

### AI Calorie Tracker

[App page](https://appshunter.io/ios/app/ai-calorie-tracker-bitely/id6747688524)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FoodScan AI Plus | $4.99 | per 7 days |
| FoodScan AI Plus | $19.99 | per year |


### Sour

[App page](https://appshunter.io/ios/app/sour-quit-sugar-tracker/id6775868761)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sour Premium Monthly | $8.99 | per month |
| Sour Premium Yearly | $44.99 | per year |


## Frequently asked questions

### Is AI Calorie Tracker free?

AI Calorie Tracker is free to download, with in-app purchases available.

### Is Sour free?

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

### Do AI Calorie Tracker or Sour have ads?

Neither AI Calorie Tracker nor Sour shows ads.

### Which is updated more often, AI Calorie Tracker or Sour?

AI Calorie Tracker ships an update every 12 months, and Sour every 3 weeks. Most recently, AI Calorie Tracker was updated on October 24, 2026 and Sour on October 5, 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.*