# Nightmare Muscle vs STRNGTH

The clearest difference is update cadence: STRNGTH at fortnightly against Nightmare Muscle's every 23 months. Nightmare Muscle's advantage is iOS requirement (13.5 vs 17.0). 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.

Nightmare Muscle ships an update every 23 months, STRNGTH fortnightly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Nightmare Muscle | STRNGTH |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Fortnightly** |
| Size | 14 MB | 12 MB |
| Requires iOS | **13.5** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Nightmare Muscle LLC](https://appshunter.io/developer/1714469418) | [Justin Van Bibber](https://appshunter.io/developer/6791438672) |

## What reviewers say

### Nightmare Muscle

[App page](https://appshunter.io/ios/app/nightmare-muscle/id6470935265)

**Features:** macOS Compatibility

**In-app purchases:** none


### STRNGTH

[App page](https://appshunter.io/ios/app/strngth/id6791438670)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nightmare Muscle free?

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

### Is STRNGTH free?

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

### Do Nightmare Muscle or STRNGTH have ads?

Neither Nightmare Muscle nor STRNGTH shows ads.

### Which is updated more often, Nightmare Muscle or STRNGTH?

Nightmare Muscle ships an update every 23 months, and STRNGTH fortnightly. Most recently, Nightmare Muscle was updated on October 25, 2026 and STRNGTH on October 24, 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.*