# Calorie AI vs Protein Ring

The clearest difference is in-app purchases: Calorie AI at none against Protein Ring's 2. Protein Ring's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Protein Ring sells 2 in-app purchases, starting at $4.99 per 7 days. Calorie AI asks for nothing beyond the download.

Calorie AI ships an update every 3 months, Protein Ring every 2 weeks. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Calorie AI | Protein Ring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calorie-ai/id6752853501/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 19 MB | 25 MB |
| Requires iOS | **17** | 18.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Kawaii](https://appshunter.io/developer/1696001381) | [Typedream LLP](https://appshunter.io/developer/1861700132) |

## What reviewers say

### Calorie AI

[App page](https://appshunter.io/ios/app/calorie-ai/id6752853501)

Effortlessly track your food intake by simply taking a photo. Get instant calorie counts, macro breakdowns, and portion size estimates. Monitor your daily progress towards your goals with a clear visual journal.

**Highlights:** AI-powered photo food recognition, Calorie and macro breakdowns, Portion size estimation, Daily calorie and macro tracking, Historical food journal, Quick manual logging, Community food discovery

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

**In-app purchases:** none


### Protein Ring

[App page](https://appshunter.io/ios/app/protein-ring-macro-tracker/id6785971667)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protein Ring Weekly | $4.99 | per 7 days |
| Protein Ring Yearly | $39.99 | per year |


## Frequently asked questions

### Is Calorie AI free?

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

### Is Protein Ring free?

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

### Do Calorie AI or Protein Ring have ads?

Neither Calorie AI nor Protein Ring shows ads.

### Which is updated more often, Calorie AI or Protein Ring?

Calorie AI ships an update every 3 months, and Protein Ring every 2 weeks. Most recently, Calorie AI was updated on October 6, 2026 and Protein Ring on October 14, 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.*