# BMI Tracker vs Protein Tracker AI

The clearest difference is update cadence: Protein Tracker AI at every 11 days against BMI Tracker's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. BMI Tracker sells 1 one-off in-app purchase and Protein Tracker AI sells 4 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

BMI Tracker ships an update every 4 months, Protein Tracker AI every 11 days. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | BMI Tracker | Protein Tracker AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 11 days** |
| Size | 6 MB | 71 MB |
| Requires iOS | 18.4 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cesar Ibarra](https://appshunter.io/developer/1076131150) | [Thinkbyte](https://appshunter.io/developer/1720025381) |

## What reviewers say

### BMI Tracker

[App page](https://appshunter.io/ios/app/bmi-tracker-weight-log/id1606457096)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $2.99 | one-time |


### Protein Tracker AI

[App page](https://appshunter.io/ios/app/protein-tracker-ai/id6739307866)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| Annual Subscription | $19.99 | per year |
| Get 10 Credits Instantly | $2.99 | one-time |
| 30 Credits - Best Value! | $4.99 | one-time |


## Frequently asked questions

### Is BMI Tracker free?

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

### Is Protein Tracker AI free?

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

### Do BMI Tracker or Protein Tracker AI have ads?

Neither BMI Tracker nor Protein Tracker AI shows ads.

### Which is updated more often, BMI Tracker or Protein Tracker AI?

BMI Tracker ships an update every 4 months, and Protein Tracker AI every 11 days. Most recently, BMI Tracker was updated on October 16, 2026 and Protein Tracker AI 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.*