Rise Science

AutoSleep

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.

Pillow

Pillow is a sleep tracking app for iPhone, iPad, and Apple Watch that automatically detects sleep cycles using motion and heart rate data, without requiring a separate wearable beyond an Apple Watch. It logs sleep duration and stages, then presents trend charts by week, month, and year alongside comparisons to steps, weight, and caffeine intake logged in Apple Health. A smart alarm wakes users during a lighter sleep stage within a chosen window instead of at a fixed hard time, and the app can record audio events like snoring or sleep talking overnight for playback. Pillow processes sleep analysis on-device and states that sleep data stays local to the user's devices rather than being uploaded to a server.

Sleep Cycle

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.