Grapi I'm using this app for 7+ years because it extends the battery life to 5+ years. My 7 Pro has around 900 cycles and still 95% battery life. Sadly the current "80% limit" is just a joke because each restart eliminates this setting. I only charge to 100% once every month from 14%. The rest I'm using the phone between 40-80%. This is the sweet spot for longevity.