# AutoSleep vs HydroProof

The clearest difference is price: HydroProof at Free against AutoSleep's $9.99. HydroProof also leads on update cadence (every 4 days vs every 2 months). AutoSleep's advantage is chart position (#1 vs unranked) and iOS requirement (15.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

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

AutoSleep ships an update every 2 months, HydroProof every 4 days. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | AutoSleep | HydroProof |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.7 (62K ratings)](https://appshunter.io/ios/app/autosleep-watch-sleep-tracker/id1164801111/reviews)** | — |
| Number of ratings | **62K** | — |
| Positive reviews | 79.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | — |
| Best chart rank | **#1** | — |
| Size | 38 MB | 4 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tantsissa](https://appshunter.io/developer/861650887) | [Andre Veltens](https://appshunter.io/developer/1858390791) |

## What reviewers say

### AutoSleep

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

**Currently charting:** #1 Top Paid · Health & Fitness, #34 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


### HydroProof

[App page](https://appshunter.io/ios/app/hydroproof/id6761188208)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is AutoSleep free?

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

### Is HydroProof free?

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

### Do AutoSleep or HydroProof have ads?

Neither AutoSleep nor HydroProof shows ads.

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

AutoSleep ships an update every 2 months, and HydroProof every 4 days. Most recently, AutoSleep was updated on November 1, 2026 and HydroProof on October 28, 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.*