Comparison

AutoSleep vs Duffy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AutoSleep

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
Read full description

Automatically track your sleep from your Apple Watch. No buttons to press. Just sleep! Total Privacy. ------------- AutoSleep has no user analytics tracking. No advertising plugins. No 3rd party code. No data upload. Ask your "free" sleep app if they can say the same. Everything Included. -------------------- No extra In App Purchases. No subscriptions. Apple Sleep App Mode. ----------------- Already tracking with Apple Sleep? AutoSleep turns that data into a full analysis of every night. • Track with the Apple Sleep app and see it all in AutoSleep • Or let AutoSleep track automatically on its own • Switch between them anytime with one tap Functions ----------------- AutoSleep includes all the information and functionality you need for sleep monitoring, including: • Time Asleep – sleep duration and sleep bank balance • Sleep Rating – a consolidated rating score of your sleep • Sleep Rings – fill your sleep rings with quality sleep, including heart rate, deep sleep and REM • Apple Sleep Stages – option to use the data from the Apple Sleep app • Sleep Apnea - discover if you have sleep apnea • Sleep Blood Oxygen – measurements while sleeping • Respiration Rate – track your breathes per minute • Noise – environmental noise measurements • Sleep Analysis – view detailed graphs and breakups on your sleep cycles • Sleep Fuel – measure the quality and efficiency of your sleep • Snoring Intensity - using the AutoSnore app, view how snoring impacts your sleep quality • Tonight’s Bedtime – recommends your latest bedtime based on your habits • Readiness – indicates your physical and mental stress • Temperature – track your sleeping wrist temperature • Sleep Consistency – learn about your time to bed behaviours • Lights Off – track the time to fall asleep • Live Sleep Tracking – view your sleep statistics during the night • Smart Alarm – Watch in-built smart alarm to help you wake in lighter sleep • Widgets – fantastic range of iPhone widgets • Complications – multiple Watch face options • HomeKit – full integration with Apple HomeKit • Emojis & Notes – record comments and tags to your sleep session • Explore – deep dive analytics views • Siri – use with Siri voice commands • Shortcuts – create your own shortcuts that you use with AutoSleep • Adjust – a simple function to adjust sleep/wake detection individual to you • History – advanced graphs and trends • Configuration – change the theme and design your clock sleep rings • Setup – customise your sleep goals, setup notifications and reminders • Exports – exporting options to save your data About AutoSleep ----------------- Using Advanced Heuristics AutoSleep works out how long you've slept so you don't have to. If you DO wear your Watch to bed, you don't need to do a single thing. AutoSleep will track your sleep & quality and send you a notification in the morning. Even if you don't wear your Watch to bed, AutoSleep can track your time in bed. It's extremely simple. If you DON'T wear your Watch to bed, then simply take your Watch off before you go to sleep. As soon as you touch your iPhone or put your Watch back on in the morning then AutoSleep will know that you have finished sleeping. As everyone is a little bit different. AutoSleep provides a simple setup wizard and an option to tweak if you are a very restless sleeper. AutoSleep also integrates beautifully with the Eclipse Yourself and HeartWatch apps, our premier heart, health, activity, recovery and readiness monitoring apps. *Requires an Apple Watch Series 4 or higher running watchOS 9 or later. Awards ----------------- Best of 2019 https://apps.apple.com/story/id1484100916/ Best of 2020 https://apps.apple.com/story/id1535572713/ Best of 2021 https://apps.apple.com/story/id1591083005/ Best of 2022 https://apps.apple.com/story/id1654240446 Best of 2023 https://apps.apple.com/story/id1719170110 Best of 2024 https://apps.apple.com/us/story/id1778539371 Best of 2025 https://apps.apple.com/us/story/id1847717004

About

Duffy

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
Read full description

Duffy provides quick access to your step count directly on your Apple Watch face as a complication. I was surprised to find that a steps complication wasn’t included on Apple Watches out of the box. Being a veteran iOS developer, I decided to build one in my spare time. I really loved my prototype version and thought there were more people who would love it too. So I put in the extra effort to release it to the App Store for everyone! Duffy is completely free, has no ads, and is even open source so if you’re also a developer, you can help me enhance it. Duffy is a simple app, but it will probably turn into the most used app on your Apple Watch. No more opening the Activity app and scrolling around to find your steps. It’s now available at a glance. Duffy is more than just an elegant Apple Watch complication. Use the full watch app for easy access to your steps, flights climbed and distance travelled for today and the past week. Set a daily steps goal and be notified on your watch when you reach it. The companion iPhone app provides the same access to your steps, flights and distance on a much larger, easier-to-read surface while also allowing you to dig deeper into your data to see trends and statistics over time. Duffy reads the steps, flights climbed, distance travelled, and activity energy from your iPhone and Apple Watch from the Health app (via the HealthKit API).

Screenshots

AutoSleep4 screens
Duffy4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 4 level
AutoSleep versus Duffy: the parameters behind the verdict, then further details
ParameterAutoSleepDuffy
Price$9.99Free — better
Rating4.7 (62K ratings)4.7 (792 ratings) — better
Positive reviews79.5% of reviews83.4% of reviews — better
Number of ratings62K — better792
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#3 — better—
DevicesiPhone, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS15.0 — better18.6
Further details — not scored
Size38 MB10 MB
Age rating4+4+
DeveloperTantsissaThink Tank Productions

Customer experience

AutoSleep

All ratings61,870 ratings
Positive94.4%
Neutral1.4%
Negative4.2%
Written reviews4,125 reviews
Positive79.5%
Neutral5.2%
Negative15.3%

Duffy

All ratings790 ratings
Positive92.5%
Neutral2.5%
Negative4.9%
Written reviews379 reviews
Positive83.4%
Neutral5.0%
Negative11.6%

Bugs and requests

AutoSleep

Reported bugs

4 issues
  • 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

5 requests
  • 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

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

AutoSleep

No in-app purchases

4 purchases

Duffy

One-time4
  • Tip $1$0.99
  • Tip $2$1.99
  • Tip $3$2.99
Show 1 more
  • Tip $5$4.99

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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