The Oral-B app was fun a few years ago when it was fairly lightweight, showed an up-to-date current world events news feed, while logging data into apple health and encouraging a brushing streak. Then they rewrote the entire app and it lost almost all of those features. I never opened the app once after the first run after the upgrade. Really makes me wish for an iOS app store that would allow installing older versions, like testflight does (up to 90 days only, unfortunately). Maybe it's time to break out a BLE sniffer... although I'm sure getting a HealthKit entitlement for a one-off unlicensed adhoc app is impossible :(