# FAT Calorie Tracker vs SleepMaxx

The clearest difference is update cadence: FAT Calorie Tracker at weekly against SleepMaxx's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FAT Calorie Tracker sells 1 in-app purchase, starting at $1.99 per month and SleepMaxx sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

FAT Calorie Tracker ships an update weekly, SleepMaxx monthly. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | FAT Calorie Tracker | SleepMaxx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Size | 10 MB | 19 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jan Frederik Kollmorgen](https://appshunter.io/developer/1883065544) | [Evgenii Rozanov](https://appshunter.io/developer/1439552866) |

## What reviewers say

### FAT Calorie Tracker

[App page](https://appshunter.io/ios/app/fat-calorie-tracker/id6760190135)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FAT Premium | $1.99 | per month |


### SleepMaxx

[App page](https://appshunter.io/ios/app/sleepmaxx-sleep-tracker/id6772767350)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleep Pro Weekly | $9.99 | per 7 days |
| Sleep Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is FAT Calorie Tracker free?

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

### Is SleepMaxx free?

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

### Do FAT Calorie Tracker or SleepMaxx have ads?

Neither FAT Calorie Tracker nor SleepMaxx shows ads.

### Which is updated more often, FAT Calorie Tracker or SleepMaxx?

FAT Calorie Tracker ships an update weekly, and SleepMaxx monthly. Most recently, FAT Calorie Tracker was updated on October 7, 2026 and SleepMaxx on October 8, 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.*