# MUSCLE THRU vs Nine Under

The clearest difference is iOS requirement: MUSCLE THRU at 13.0 against Nine Under's 15.0. 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.

## The numbers

| Metric | MUSCLE THRU | Nine Under |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 13 months |
| Size | 54 MB | 40 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Muscle Thru Unlimited, LLC](https://appshunter.io/developer/1525700321) | [Joseph Terrill](https://appshunter.io/developer/1822564454) |

## What reviewers say

### MUSCLE THRU

[App page](https://appshunter.io/ios/app/muscle-thru/id6743771682)

**Features:** macOS Compatibility

**In-app purchases:** none


### Nine Under

[App page](https://appshunter.io/ios/app/nine-under-golf-performance/id6747715753)

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

**In-app purchases:** none


## Frequently asked questions

### Is MUSCLE THRU free?

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

### Is Nine Under free?

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

### Do MUSCLE THRU or Nine Under have ads?

Neither MUSCLE THRU nor Nine Under shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*