# AutoSleep vs Duffy

The clearest difference is price: Duffy at Free against AutoSleep's $9.99. AutoSleep's advantage is in-app purchases (none vs 4) and ratings volume (62K vs 792). On rating, review sentiment, ads and device support there is nothing between them.

Duffy is free to download; AutoSleep costs $9.99 up front. Duffy sells 4 one-off in-app purchases. AutoSleep asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for AutoSleep against 4.7 for Duffy. That said, the two scores are not equally well evidenced: AutoSleep has 62K ratings behind it against 792, so its average is the more settled of the two. Written reviews are what separate them: 79% of AutoSleep's written reviews are positive against 83% of Duffy's.

AutoSleep ships an update every 2 months, Duffy every 4 months. The most recent releases landed on November 13, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | AutoSleep | Duffy |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.7 (62K ratings)](https://appshunter.io/ios/app/autosleep-watch-sleep-tracker/id1164801111/reviews) | **[4.7 (792 ratings)](https://appshunter.io/ios/app/duffy-steps-complication/id1207581673/reviews)** |
| Number of ratings | **62K** | 792 |
| Positive reviews | 79.5% of reviews | **83.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#2** | — |
| Size | 38 MB | 10 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) | [Think Tank Productions](https://appshunter.io/developer/438070192) |

## What reviewers say

### AutoSleep

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

**Currently charting:** #2 Top Paid · Health & Fitness, #30 Top Paid (US App Store)

Automatically track your sleep using your Apple Watch with detailed analysis and insights. Offers comprehensive sleep monitoring, including duration, quality, and stages, with no subscriptions or in-app purchases required.

**Highlights:** Automatic sleep tracking, Detailed sleep analysis, Sleep stages and quality metrics, Apple Sleep app integration, Smart alarm, Widgets and complications, HomeKit integration

**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


### Duffy

[App page](https://appshunter.io/ios/app/duffy-steps-complication/id1207581673)

This app displays your daily step count directly on your Apple Watch face as a complication. It offers a full watch app for detailed stats and goal notifications, plus a companion iPhone app for deeper data analysis and trends. Access your fitness data at a glance without opening the Activity app.

**Highlights:** Watch face complication for step count, Full watch app for steps, flights, distance, Daily step goal notifications, Companion iPhone app for trends, HealthKit data integration

**Features:** Apple Watch app, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip $1 | $0.99 | one-time |
| Tip $2 | $1.99 | one-time |
| Tip $3 | $2.99 | one-time |
| Tip $5 | $4.99 | one-time |


## Frequently asked questions

### Is AutoSleep free?

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

### Is Duffy free?

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

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

Duffy is rated higher. AutoSleep averages 4.7 out of 5 from 62K ratings, while Duffy averages 4.7 from 792 ratings.

### Do AutoSleep or Duffy have ads?

Neither AutoSleep nor Duffy shows ads.

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

AutoSleep ships an update every 2 months, and Duffy every 4 months. Most recently, AutoSleep was updated on November 13, 2026 and Duffy on November 11, 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.*