# AutoSleep vs retimer

The clearest difference is review sentiment: AutoSleep at 80% against retimer's 0%. AutoSleep also leads on rating (4.7 vs 2.0) and ratings volume (62K vs 1). retimer's advantage is price (Free vs $9.99) and update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

retimer is free to download; AutoSleep costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AutoSleep holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: AutoSleep has 62K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of AutoSleep's written reviews are positive against 0% of retimer's.

AutoSleep ships an update every 2 months, retimer every 3 weeks. The most recent releases landed on October 27, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | AutoSleep | retimer |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.7 (62K ratings)](https://appshunter.io/ios/app/autosleep-watch-sleep-tracker/id1164801111/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/retimer/id6475566801/reviews) |
| Number of ratings | **62K** | 1 |
| Positive reviews | **79.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Best chart rank | **#2** | — |
| Size | 38 MB | 108 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tantsissa](https://appshunter.io/developer/861650887) | [Re-Time Pty Ltd](https://appshunter.io/developer/637379603) |

## What reviewers say

### AutoSleep

[App page](https://appshunter.io/ios/app/autosleep-watch-sleep-tracker/id1164801111)

**Currently charting:** #2 Top Paid · Health & Fitness, #25 Top Paid (US App Store)

Automatically tracks your sleep using your Apple Watch without manual input. Offers detailed insights into sleep duration, quality, and various physiological metrics. Integrates with Apple Health and provides smart alarm features.

**Highlights:** Automatic sleep tracking, Detailed sleep analysis, Sleep Stages integration, Smart alarm, Privacy focused, Heart rate and respiration tracking, Wrist temperature monitoring

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 🚀 One time purchase, no subscription
- 👍 Comprehensive sleep tracking and insights
- 🔍 Detailed data and visualizations
- ⌚ Seamless Apple Watch integration
- 🔋 Minimal battery drain on Apple Watch

**What reviewers complain about**

- 🐛 Inconsistent or inaccurate sleep tracking
- 🤔 Complicated interface and settings
- 🔋 High battery drain on Apple Watch
- 🤔 Difficulty calibrating and adjusting settings
- 🤔 Confusing or overwhelming data presentation

**Reported bugs**

- App crashes or stops working after updates
- Sleep data disappearing or not syncing properly
- Incorrect sleep time and wake up detection
- Issues with Apple Watch connectivity and data transfer

**Requested features**

- Add support for REM sleep tracking
- Improve smart alarm functionality
- Allow setting custom sleep/wake time windows
- Add more personalization and customization options
- Improve integration with other health/fitness apps


### retimer

[App page](https://appshunter.io/ios/app/retimer/id6475566801)

This app helps manage and monitor your circadian rhythm to improve sleep and energy levels. It works with a light therapy wearable to address issues like jet lag, irregular work hours, and general sleep difficulties.

**Highlights:** Circadian rhythm management, Sleep monitoring, Energy level improvement, Jet lag adjustment, Light therapy integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AutoSleep free?

AutoSleep costs $9.99, with no in-app purchases.

### Is retimer free?

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

### Which has better reviews, AutoSleep or retimer?

AutoSleep is rated higher. AutoSleep averages 4.7 out of 5 from 62K ratings, while retimer averages 2.0 from 1 ratings.

### Do AutoSleep or retimer have ads?

Neither AutoSleep nor retimer shows ads.

### Which is updated more often, AutoSleep or retimer?

AutoSleep ships an update every 2 months, and retimer every 3 weeks. Most recently, AutoSleep was updated on October 27, 2026 and retimer on October 21, 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.*