# IRON GYM vs Autofit

The clearest difference is update cadence: Autofit at every 4 days against IRON GYM's every 4 months. IRON GYM's advantage is iOS requirement (12.0 vs 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.

IRON GYM ships an update every 4 months, Autofit every 4 days. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | IRON GYM | Autofit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Size | 40 MB | 93 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Physical Technologies LTD](https://appshunter.io/developer/822656926) | [AutoFit LLC.](https://appshunter.io/developer/1643142692) |

## What reviewers say

### IRON GYM

[App page](https://appshunter.io/ios/app/iron-gym/id6446493807)

**Features:** macOS Compatibility

**In-app purchases:** none


### Autofit

[App page](https://appshunter.io/ios/app/autofit/id6511219528)

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

**In-app purchases:** none


## Frequently asked questions

### Is IRON GYM free?

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

### Is Autofit free?

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

### Do IRON GYM or Autofit have ads?

Neither IRON GYM nor Autofit shows ads.

### Which is updated more often, IRON GYM or Autofit?

IRON GYM ships an update every 4 months, and Autofit every 4 days. Most recently, IRON GYM was updated on October 27, 2026 and Autofit on November 4, 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.*