MidZai / aman_check

Dated, honest condition report for a used Mac: locks, battery, SSD, configuration and guided hardware tests. Native macOS app, nothing leaves your Mac.

slawek19926 / Vitals

Native open-source system monitor for macOS — Apple Silicon, SMC sensors, processes, disks, network and system health.

Cheiineeey / ios-app-where-it-breaks

Where iOS development actually breaks: Dynamic Island, CallKit, HealthKit, APNs, ReplayKit. Every wall hit on a real device — and most of them fail silently. Docs in Chinese, written to be handed to your AI.

ShawnDiego / HealthMi

把小米运动健康（Mi Fitness）云端健康数据写入 Apple 健康（HealthKit）的 iOS App（SwiftUI）

rurza / BatFi

Battery charge limiter for macOS. Hold any limit, below 80% too, change it by time and place, and charge to 100% when you need it.

Rydersel / Candela

Candela protects your displays from OLED burn-in and wear: panel health history, a checkup for defects, and the controls macOS leaves out for external monitors (brightness, volume, contrast, custom resolutions, HiDPI scaling). Free and open source.