# Button Simple vs FatigueSense

The clearest difference is update cadence: FatigueSense at daily against Button Simple's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Button Simple ships an update every 2 weeks, FatigueSense daily. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Button Simple | FatigueSense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (33 ratings)](https://appshunter.io/ios/app/fatiguesense/id6759190693/reviews)** |
| Number of ratings | — | **33** |
| Positive reviews | — | 80.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | — | Free |
| Size | 53 MB | 56 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Button Simple LLC](https://appshunter.io/developer/1595223961) | [Nana Abaogye](https://appshunter.io/developer/1787898108) |

## What reviewers say

### Button Simple

[App page](https://appshunter.io/ios/app/button-simple/id6743678086)

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

**In-app purchases:** none


### FatigueSense

[App page](https://appshunter.io/ios/app/fatiguesense/id6759190693)

This app helps you understand and manage your energy levels by linking wearable data with daily check-ins. It provides insights into activity, recovery, and fatigue to help you pace your days and avoid crashing. Designed for individuals managing persistent fatigue conditions.

**Highlights:** Daily energy budget tracking, Early PEM signal alerts, Strain, recovery, HRV, RHR, and sleep tracking, Activity planning within energy envelope, Crash logging and individual pattern learning, Wearable device integration (Apple Watch, Oura, Garmin, etc.), Manual daily entry option

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

**In-app purchases:** none


## Frequently asked questions

### Is Button Simple free?

Button Simple is free to download, with no in-app purchases.

### Is FatigueSense free?

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

### Do Button Simple or FatigueSense have ads?

Neither Button Simple nor FatigueSense shows ads.

### Which is updated more often, Button Simple or FatigueSense?

Button Simple ships an update every 2 weeks, and FatigueSense daily. Most recently, Button Simple was updated on October 3, 2026 and FatigueSense on October 11, 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.*