# Kairn vs Athloop

The clearest difference is in-app purchases: Athloop at none against Kairn's 8. Athloop also leads on iOS requirement (15.0 vs 17.0). Kairn's advantage is update cadence (every 5 days vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. Kairn sells 7 in-app purchases, starting at $8.90 per month. Athloop asks for nothing beyond the download.

Kairn ships an update every 5 days, Athloop every 10 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Kairn | Athloop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 10 days |
| Size | 79 MB | 22 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KAIRN](https://appshunter.io/developer/1791948140) | [Charles Granet](https://appshunter.io/developer/1845567788) |

## What reviewers say

### Kairn

[App page](https://appshunter.io/ios/app/kairn-running-mental-coach/id6740853519)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $8.90 | per month |
| Trimestriel | $22.00 | per 3 months |
| Annual | $70.00 | per year |
| Kairn Brief | $2.90 | one-time |
| Kairn Brief | $3.90 | one-time |
| Kairn Brief | $4.90 | one-time |
| Life Time Kairn Premium | $99.00 | one-time |


### Athloop

[App page](https://appshunter.io/ios/app/athloop/id6753897084)

**In-app purchases:** none


## Frequently asked questions

### Is Kairn free?

Kairn is free to download, with in-app purchases available.

### Is Athloop free?

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

### Do Kairn or Athloop have ads?

Neither Kairn nor Athloop shows ads.

### Which is updated more often, Kairn or Athloop?

Kairn ships an update every 5 days, and Athloop every 10 days. Most recently, Kairn was updated on October 30, 2026 and Athloop on October 30, 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.*