I've been using AccuBattery the past few days on my S7 edge. In 13 months of ownership, the charged capacity has reduced by 24% : r/Android
What is iOS alternative to AccuBattery? - Quora
AccuBattery MOD APK 2.0.7 (Pro Unlocked) for Android
AccuBattery Android Phone Health Checker Review First Look - YouTube
AccuBattery for Android - Test Routinely Your Phone Battery Health - YouTube
This is what AccuBattery says about the health of my battery. I have the phone since july 2019 and since a while, since miui11 the battery doesn't seem to last that long
Accubattery shows battery health less than 4370mAh S20+ : r/samsung
Accubattery Alternatives for iPhone: Top 3 Battery Monitors and similar apps | AlternativeTo
Accubattery (85% Battery Health after 11 months) : r/GalaxyNote8