# ION vs progressive overloading

The clearest difference is device support: progressive overloading at 3 against ION's 1. progressive overloading also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

ION ships an update fortnightly, progressive overloading every 3 weeks. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ION | progressive overloading |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 56 MB | 41 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CARLOS MARTIN DE ARGILA LORENTE](https://appshunter.io/developer/1869158134) | [Habibullah Yousofi](https://appshunter.io/developer/1879058266) |

## What reviewers say

### ION

[App page](https://appshunter.io/ios/app/ion-workout-log/id6757827438)

**Features:** macOS Compatibility

**In-app purchases:** none


### progressive overloading

[App page](https://appshunter.io/ios/app/progressive-overloading/id6759499451)

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

**In-app purchases:** none


## Frequently asked questions

### Is ION free?

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

### Is progressive overloading free?

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

### Do ION or progressive overloading have ads?

Neither ION nor progressive overloading shows ads.

### Which is updated more often, ION or progressive overloading?

ION ships an update fortnightly, and progressive overloading every 3 weeks. Most recently, ION was updated on October 9, 2026 and progressive overloading on October 7, 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.*