# Stamina Center vs Button

The clearest difference is in-app purchases: Stamina Center at none against Button's 3. Stamina Center also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.1). Button's advantage is update cadence (every 5 days vs every 16 months). On price and device support there is nothing between them.

Both are free to download. Button sells 3 in-app purchases, starting at $3.49 per 7 days. Stamina Center asks for nothing beyond the download.

Stamina Center ships an update every 16 months, Button every 5 days. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Stamina Center | Button |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Every 5 days** |
| Size | 29 MB | 93 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Ilona Mishkina](https://appshunter.io/developer/1585192969) | [Sentrivo OU](https://appshunter.io/developer/6781007219) |

## What reviewers say

### Stamina Center

[App page](https://appshunter.io/ios/app/stamina-center/id1585192967)

**Features:** macOS Compatibility

**In-app purchases:** none


### Button

[App page](https://appshunter.io/ios/app/button-sos-panic-button/id6781007217)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $3.49 | per 7 days |
| Month | $4.99 | per month |
| Annual | $29.99 | per year |


## Frequently asked questions

### Is Stamina Center free?

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

### Is Button free?

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

### Do Stamina Center or Button have ads?

Button shows ads; Stamina Center does not.

### Which is updated more often, Stamina Center or Button?

Stamina Center ships an update every 16 months, and Button every 5 days. Most recently, Stamina Center was updated on October 7, 2026 and Button 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.*