Privacy Policy
Your data never leaves your device
Last updated: 27 July 2026 · Applies to Energycast for iOS and watchOS, published by Metamorfose.
What we collect
Nothing. Energycast has no accounts, no server, no analytics, no advertising and no third-party SDKs. Everything you log is stored only on your device (and, where you use the Watch app, mirrored to your paired Apple Watch over Apple's device-to-device connection).
Network use
Energycast works completely offline, with one optional exception: barcode scanning can look up products in the Open Food Facts database (openfoodfacts.org, ODbL licence). Only the barcode digits are sent — never anything about you or your device. Results are cached on-device so each product is looked up once, and the lookup can be switched off entirely in Settings → Data & privacy.
Health data
- With your explicit permission, Energycast reads from Apple Health: sleep analysis, dietary nutrition (carbohydrates, protein, fat, fibre, energy, caffeine), workouts, active energy, steps, body weight, heart-rate variability, resting heart rate, and cycle tracking.
- This data is used solely to compute your on-device energy prediction and daily totals. It is never transmitted off your device, never shared with third parties, never used for advertising or marketing, and never sold — nor will it ever be.
- If you turn on the optional write-back (off by default), meals you log in Energycast (calories, macros, caffeine) are written to Apple Health so your other apps can use them. Entries imported from Health are never written back. Energycast never writes its energy estimates to Health.
- You can revoke Health access at any time in the Health app or iOS Settings, and every integration is individually switchable inside Energycast's own settings.
Photos and text you log
Photos and descriptions are analysed by Apple's on-device Foundation Models — the processing happens entirely on your iPhone. Images are not stored by Energycast and are never uploaded anywhere.
Your control
- Backup and restore: your complete data can be saved as a JSON file from Settings at any time, and restored from that file onto any device. The file never leaves your control — there is no cloud copy, and restoring reads the file you choose without sending anything anywhere.
- Delete: Settings includes a delete-all-data option that permanently and immediately erases everything; deleting the app has the same effect.
Not medical advice
Energycast produces heuristic estimates for general wellness. It is not a medical device, makes no diagnostic claims, and should not be used to manage any medical condition.
Changes and contact
If this policy ever changes, the update will appear on this page with a new date. Questions: see Support below.
