September 2026
The digest, generated from the record — not written from memory
Fitness and health API news for September 2026: 24 pages verified, across 2 sections.
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Published or re-verified
Build Guides (14)
- Parental Consent, Data Minimisation and Tracker-Free Screens for Kids Fitness Apps
- Multisport Data Models, Deduplicated Imports and Combined Training Load for Triathlon Apps
- Drift-Free Background Interval Timing and Audio Cues Over Music for HIIT Apps
- Offline Maps, Local-First Track Recording and Elevation Gain for Hiking Apps
- Length Counting, Watch-Only Recording and No Bluetooth Underwater in Swimming Apps
- Bluetooth Power and Cadence Sensors, Duplicate Rides and Power Averaging in Cycling Apps
- Accessibility-First Design and Passive Mobility Metrics for Senior Fitness Apps
- Anti-Cheat, Double-Counted Steps and Timezone-Safe Day Closes for Step Challenge Apps
- On-Device Storage, Encrypted Sync and Irregular-Cycle Prediction for Cycle Tracking Apps
- Background Audio, Interruptions and Lock-Screen Controls for Meditation Apps
- HRV Baselines, the Cold Start and Score Versioning for Recovery Apps
- Sessions That Cross Midnight and Devices That Disagree in Sleep Tracking Apps
- Ingredient Normalisation and Shopping List Generation for Meal Planning Apps
- Smoothing Noisy Weigh-Ins and Labelling Calorie Estimates in Weight Loss Apps
Troubleshooting (10)
- Undocumented HealthKit Errors: Handling a Case Apple Never Described
- HealthKit errorNotPermissibleForGuestUserMode: Writes Blocked in a Guest Session
- HealthKit Workout Session Errors: Four Cases, Two of Them Undocumented
- HealthKit errorRequiredAuthorizationDenied: Clinical Records Are a Separate Class
- HealthKit errorAuthorizationNotDetermined: You Called Before You Asked
- HealthKit errorInvalidArgument: Finding the Argument HealthKit Rejected
- HealthKit errorNoData: The Query Ran and Found Nothing
- HealthKit errorHealthDataRestricted: An MDM Profile Turned HealthKit Off
- HealthKit errorHealthDataUnavailable: The Device Does Not Support HealthKit
- HealthKit errorDatabaseInaccessible: Reads Fail While the Device Is Locked
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