# OpenSleep vs Dozer

The clearest difference is iOS requirement: Dozer at 17.0 against OpenSleep's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. OpenSleep sells 1 one-off in-app purchase and Dozer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OpenSleep ships an update every 11 days, Dozer fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | OpenSleep | Dozer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/opensleep-sleep-tracker-and-ai/id6775201826/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 73 MB | 17 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Yuan Qian](https://appshunter.io/developer/1894474763) | [Adrian Nicolaysen](https://appshunter.io/developer/1887756605) |

## What reviewers say

### OpenSleep

[App page](https://appshunter.io/ios/app/opensleep-sleep-tracker-and-ai/id6775201826)

This app offers a privacy-focused, offline sleep tracker and AI coach. It analyzes your sleep patterns locally on your device, synchronizes with Apple Health, and provides detailed insights without sending any data to servers.

**Highlights:** Offline sleep tracking, Local AI sleep coach, Apple Health synchronization, Sleep cycle and stage analysis, Privacy-first, serverless design, Detailed sleep history

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenSleep Lifetime Premium | $2.99 | one-time |


### Dozer

[App page](https://appshunter.io/ios/app/dozer-sleep-tracker/id6790656632)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dozer+ | $14.99 | one-time |


## Frequently asked questions

### Is OpenSleep free?

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

### Is Dozer free?

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

### Do OpenSleep or Dozer have ads?

Neither OpenSleep nor Dozer shows ads.

### Which is updated more often, OpenSleep or Dozer?

OpenSleep ships an update every 11 days, and Dozer fortnightly. Most recently, OpenSleep was updated on October 31, 2026 and Dozer on October 31, 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.*