# Axion vs PerFit

The clearest difference is update cadence: PerFit at every 6 weeks against Axion's every 73 months. Axion's advantage is iOS requirement (13.0 vs 15.6). 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.

Axion ships an update every 73 months, PerFit every 6 weeks. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Axion | PerFit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 73 months | **Every 6 weeks** |
| Size | 18 MB | 38 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kostas Kousinovalis](https://appshunter.io/developer/762128160) | [Athanasios Darkadakis](https://appshunter.io/developer/1871633873) |

## What reviewers say

### Axion

[App page](https://appshunter.io/ios/app/axion/id1490832934)

**Features:** macOS Compatibility

**In-app purchases:** none


### PerFit

[App page](https://appshunter.io/ios/app/perfit/id6758229315)

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

**In-app purchases:** none


## Frequently asked questions

### Is Axion free?

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

### Is PerFit free?

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

### Do Axion or PerFit have ads?

Neither Axion nor PerFit shows ads.

### Which is updated more often, Axion or PerFit?

Axion ships an update every 73 months, and PerFit every 6 weeks. Most recently, Axion was updated on October 12, 2026 and PerFit 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.*