# O vs SLEEP 2026

The clearest difference is ads: O at none against SLEEP 2026's shown. SLEEP 2026's advantage is update cadence (every 6 months vs every 13 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

O ships an update every 13 months, SLEEP 2026 every 6 months. The most recent releases landed on September 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | O | SLEEP 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 6 months** |
| Size | 5 MB | 52 MB |
| Requires iOS | **16.2** | 16.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [AppBakkers BV](https://appshunter.io/developer/1104913401) | [American Academy of Sleep Medicine](https://appshunter.io/developer/476461157) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-ringeu/id6450456605)

**Features:** Vision Pro support

**In-app purchases:** none


### SLEEP 2026

[App page](https://appshunter.io/ios/app/sleep-2026/id6745907488)

**In-app purchases:** none


## Frequently asked questions

### Is O free?

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

### Is SLEEP 2026 free?

SLEEP 2026 is free to download, with no in-app purchases.

### Do O or SLEEP 2026 have ads?

SLEEP 2026 shows ads; O does not.

### Which is updated more often, O or SLEEP 2026?

O ships an update every 13 months, and SLEEP 2026 every 6 months. Most recently, O was updated on September 13, 2026 and SLEEP 2026 on October 9, 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.*