# AB BMI Plus vs ChadMaxx

The clearest difference is in-app purchases: AB BMI Plus at none against ChadMaxx's 2. ChadMaxx's advantage is update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ChadMaxx sells 2 in-app purchases, starting at $7.99 per 7 days. AB BMI Plus asks for nothing beyond the download.

AB BMI Plus ships an update every 3 months, ChadMaxx fortnightly. Both last shipped on October 25, 2026.

## The numbers

| Metric | AB BMI Plus | ChadMaxx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 9 MB | 63 MB |
| Requires iOS | 16.5 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 17+ |
| Developer | [Alexander Berkovich](https://appshunter.io/developer/1460157188) | [Zahid Khalilov](https://appshunter.io/developer/1896065260) |

## What reviewers say

### AB BMI Plus

[App page](https://appshunter.io/ios/app/ab-bmi-plus/id1622389050)

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

**In-app purchases:** none


### ChadMaxx

[App page](https://appshunter.io/ios/app/chadmaxx-looksmaxx-tracker/id6765767794)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChadMaxx Weekly | $7.99 | per 7 days |
| ChadMaxx Yearly | $39.99 | per year |


## Frequently asked questions

### Is AB BMI Plus free?

AB BMI Plus is free to download, with no in-app purchases.

### Is ChadMaxx free?

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

### Do AB BMI Plus or ChadMaxx have ads?

Neither AB BMI Plus nor ChadMaxx shows ads.

### Which is updated more often, AB BMI Plus or ChadMaxx?

AB BMI Plus ships an update every 3 months, and ChadMaxx fortnightly. Most recently, AB BMI Plus was updated on October 25, 2026 and ChadMaxx on October 25, 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.*