# eRun cBOS vs Aligned Chiro

The clearest difference is update cadence: eRun cBOS at weekly against Aligned Chiro's every 2 weeks. eRun cBOS also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price, 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.

eRun cBOS ships an update weekly, Aligned Chiro every 2 weeks. The most recent releases landed on September 20, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | eRun cBOS | Aligned Chiro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 10 MB | 107 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [eRun Systems Limited](https://appshunter.io/developer/1454740509) | [Medulla Services Pty Ltd](https://appshunter.io/developer/1821843505) |

## What reviewers say

### eRun cBOS

[App page](https://appshunter.io/ios/app/erun-cbos/id1513097219)

**Features:** macOS Compatibility

**In-app purchases:** none


### Aligned Chiro

[App page](https://appshunter.io/ios/app/aligned-chiro/id6747661139)

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

**In-app purchases:** none


## Frequently asked questions

### Is eRun cBOS free?

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

### Is Aligned Chiro free?

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

### Do eRun cBOS or Aligned Chiro have ads?

Neither eRun cBOS nor Aligned Chiro shows ads.

### Which is updated more often, eRun cBOS or Aligned Chiro?

eRun cBOS ships an update weekly, and Aligned Chiro every 2 weeks. Most recently, eRun cBOS was updated on September 20, 2026 and Aligned Chiro on October 22, 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.*