Pillow

Rise Science

Rise Science (the RISE app) is a sleep and energy tracking app founded by Jeff Kahn and Leon Sasson, originally built to help athletes and sales teams improve performance through better sleep. Rather than just logging sleep, it calculates a personalized sleep-need number and tracks 'sleep debt' - the gap between the sleep you need and what you're actually getting. Using phone usage patterns and sleep-science algorithms, RISE predicts a user's daily energy cycle, telling them things like when their last coffee should be or when to wind down for bed, and nudges them with 16 science-based habits timed to their personal schedule. It integrates with Apple Health, Oura, and Fitbit, and is a subscription app with a 7-day free trial.

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.

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.