# WellO2 vs Downhill.ai

The clearest difference is update cadence: WellO2 at every 6 weeks against Downhill.ai's every 8 months. 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.

WellO2 ships an update every 6 weeks, Downhill.ai every 8 months. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | WellO2 | Downhill.ai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 8 months |
| Size | 54 MB | 56 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [WellO2 Oy](https://appshunter.io/developer/1621277574) | [Nordic Rack and Office Oy](https://appshunter.io/developer/1770297199) |

## What reviewers say

### WellO2

[App page](https://appshunter.io/ios/app/wello2/id1621277572)

**In-app purchases:** none


### Downhill.ai

[App page](https://appshunter.io/ios/app/downhillai/id6738922710)

**In-app purchases:** none


## Frequently asked questions

### Is WellO2 free?

WellO2 is free to download, with no in-app purchases.

### Is Downhill.ai free?

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

### Do WellO2 or Downhill.ai have ads?

Neither WellO2 nor Downhill.ai shows ads.

### Which is updated more often, WellO2 or Downhill.ai?

WellO2 ships an update every 6 weeks, and Downhill.ai every 8 months. Most recently, WellO2 was updated on October 27, 2026 and Downhill.ai 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.*