AutoSleep vs Cosmi

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.

Cosmi is an all-in-one AI-powered skincare solution that offers personalized routines, detailed skin analysis reports, and voice assistance from virtual dermatologists. It scans your face to detect 11+ skin issues, provides tailored product recommendations, and helps you track skin progress over time.

• 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

• AI-powered skin analysis with fast, detailed insights
• Personalized skincare routines based on your specific needs
• Product recommendations tailored to your skin condition
• Tracks skin changes over time to visualize progress

• 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

• Subscription required for full access (no free tier mentioned)
• Relies on photo-based analysis which may not be as accurate as in-person dermatologist visits
• Product recommendations may be biased toward sponsored products
• Limited to skincare – not a medical device or treatment