My most frequently used app

I use this app on a nightly basis to get better sleep, track my sleep, and to encourage me to get more sleep when I notice my trends are poor. It has allowed me to identify certain factors that affect my sleep negatively so that I can correct them. I used to wake up quite groggy in the morning but now that has changed with this app.

Jonathon Wolf about Sleep Cycle - Tracker & Sounds, v5.3.1