AutoSleep vs CHARLI

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.

CHARLI is an Australian reproductive health app developed with Endometriosis Australia, Eve Health, and UNSW Sydney to close the gap between symptom onset and diagnosis for conditions like endometriosis. Beyond standard period and ovulation tracking, it uses AI to flag abnormal symptom patterns across menstruation, fertility, sexual health, pregnancy, and perimenopause, and can pull in data from wearables such as Apple Watch and Fitbit. The app connects users directly to CHARLI.clinic, a telehealth network of Australian GPs, specialists, dietitians, physiotherapists, and counsellors, and includes CHARLI.research so members can opt into approved studies. It launched in March 2024 and has been highlighted as one of the notable wellness-tech launches shaping reproductive healthcare in Australia.

• 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

• Built specifically to shorten endometriosis diagnostic delay
• Backed by a recognized advocacy organization and university researchers
• Integrates telehealth directly into the tracking experience
• Free to download

• 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

• Telehealth clinic network is focused on Australia
• Detailed pricing for clinic consultations isn't listed on the homepage
• AI pattern detection supplements but doesn't replace medical diagnosis
• Wearable integration depth isn't fully documented publicly