Cycles shows your battery health, the number of cycles it has been used and the present and rated battery capacity in mAh. Unlike may other battery health apps on the app store, Cycles doesn't run in the background and hog resources. It is a lightweight app that you use on demand. Each time you run Cycles, it stores the information for historical reference so that you can view how your battery is aging over time. Cycles is a universal app that works on all Apple silicon and Intel based MacBooks.
