AutoSleep vs Sleep Cycle
Side-by-side comparison of features, pricing, ratings, and alternatives.
AutoSleep is a sleep-tracking app for Apple Watch and iPhone that records sleep automatically in the background, without requiring the user to start or stop a session. It uses heart rate, motion, and (where available) blood oxygen and wrist temperature data to estimate sleep stages, sleep quality, and a running sleep debt total called the sleep bank. The app integrates with Apple Health and HomeKit, offers a smart alarm that wakes users during a lighter sleep phase, and includes an add-on companion app, AutoSnore, for snore detection. It is sold as a single one-time purchase on the App Store rather than a subscription, and processes data on-device rather than through a cloud account.
Sleep Cycle is a mobile app that uses phone sensors to track sleep duration, quality, and consistency, generating a nightly Sleep Score. Its Smart Alarm feature aims to wake users during a lighter sleep phase within a chosen time window for an easier morning, and the app also tracks snoring and long-term sleep trends.
- One-time purchase price with no ongoing subscription fees
- Fully automatic tracking that does not require remembering to start or stop a sleep session
- Detailed metrics including sleep stages, SpO2, respiration rate, and wrist temperature on supported hardware
- On-device processing with no account or login required for basic use
- Works using just a smartphone, no dedicated wearable required
- Smart Alarm feature is genuinely useful for gentler wake-ups
- Strong long-term trend tracking for sleep regularity
- Apple Watch integration adds standalone tracking and alarms
- Requires an Apple Watch for automatic tracking; iPhone-only use is far more limited
- Advanced metrics like SpO2 and respiration depend on specific newer Apple Watch models
- Interface and terminology (sleep bank, sleep debt) have a learning curve for new users
- Full feature set requires a paid Premium subscription
- Phone-based tracking can be less precise than dedicated wearables
- Needs the phone on the bed or nearby all night, which some users dislike
More alternatives & similar tools
Alternatives to AutoSleep
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Automatic sleep tracker and smart alarm for iPhone and Apple Watch with snore and sleep-talk recording.
A smart alarm and sleep tracker that analyzes sleep patterns and wakes you at the right moment.
Alternatives to Sleep Cycle
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Sleep and energy tracking app that predicts your daily energy schedule and sleep debt.
The Verdict
AI-generated from listing dataAutoSleep offers a one‑time, fully automatic Apple Watch‑only solution with on‑device processing, while Sleep Cycle provides a free app that works with just a phone and adds optional Apple Watch support but requires a subscription for full features.
Key differences
- •AutoSleep requires an Apple Watch for automatic tracking; Sleep Cycle can track with only a smartphone.
- •AutoSleep is a one‑time purchase with no subscription; Sleep Cycle is freemium and locks advanced features behind a paid tier.
- •AutoSleep records SpO2, respiration, and wrist temperature on supported watches; Sleep Cycle relies on phone sensors and offers snore detection via sound.
- •AutoSleep integrates directly with Apple Health and HomeKit; Sleep Cycle offers Apple Health sync but no HomeKit automation.
- •AutoSleep processes data on‑device with no cloud account; Sleep Cycle’s premium features use cloud services (implied by subscription).
Pricing & value
AutoSleep is a one‑time paid app; Sleep Cycle’s full feature set requires an ongoing Premium subscription.
Ease of use / learning curve
Sleep Cycle works out‑of‑the‑box with a phone; AutoSleep’s concepts like ‘sleep bank’ add learning overhead.
Features & depth
AutoSleep provides detailed metrics (sleep stages, SpO2, respiration, wrist temperature) on supported watches; Sleep Cycle offers fewer biometric metrics.
Integrations & ecosystem
AutoSleep integrates with Apple Health and HomeKit for automation; Sleep Cycle only mentions Apple Health sync.
Support
AutoSleep lists in‑app support and an online user guide; Sleep Cycle provides no specific support details.
Security & privacy
AutoSleep stores data on‑device with no cloud account required; Sleep Cycle’s premium features likely use cloud services.
Scalability / platform flexibility
Sleep Cycle works on any smartphone and optional watch; AutoSleep is limited to Apple Watch users.
Choose AutoSleep if…
Apple Watch owners who want detailed, on‑device sleep metrics without a subscription.
Choose Sleep Cycle if…
Users who prefer a free phone‑based tracker or need flexibility across devices, and accept a subscription for premium features.
Common questions
Do I need to buy a subscription for either app?
AutoSleep is a one‑time purchase with no subscription; Sleep Cycle offers basic features free but charges a Premium subscription for full functionality.
Can I track sleep without an Apple Watch?
AutoSleep requires an Apple Watch for automatic tracking; Sleep Cycle can track using only a smartphone, with optional Apple Watch support.
Which app stores my sleep data locally?
AutoSleep processes and stores data on‑device; Sleep Cycle’s premium features are cloud‑based (subscription implied).