ScaleBridge
An iOS app that reads weigh-ins from compatible Beurer and Sanitas Bluetooth scales and writes them to Apple Health. Pair a scale over BLE, pick your on-device profile, then pull to sync - weight, body fat, and related metrics show up in HealthKit without the vendor app.
Built out of frustration as an alternative to beurer HealthManager Pro, Beurer's official app for syncing measurements from their devices. It requires an account, Bluetooth connectivity is flaky, and scale data doesn't sync reliably.