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Yes. Logging weight in kg, pounds or stones, the Apple Health sync, the trend weight with the algorithm you pick, the 7-day change, the history over 1 and 3 months, your goal including a target pace, BMI, export and import as well as one daily reminder are free forever. Trendcurve Pro adds the forecast, the calorie budget, patterns such as plateaus and weekdays, milestones, balance, monthly reports, body measurements, progress photos, trend markers, long chart ranges, the iCloud backup and the larger widgets.

Locally on your iPhone. Trendcurve has no server and no account, and no health data is transmitted to us. Only if you enable the iCloud backup does the app place a copy in your own iCloud account, which we cannot access.

There are exactly four reasons, and Trendcurve always names the one that applies: your trend is barely moving, it is currently running away from the goal, there are still too few measurements, or your last measurement is more than three days old. The app will not invent a date.

iOS does not tell apps whether read access was granted. Check in the Health app under Profile → Apps & Services → Trendcurve whether "Weight" is enabled. After that, "Settings & more → Apple Health → Sync now" or "Import everything again" will help. If Trendcurve should write to Health as well, writing has to be allowed there and writing back has to be switched on in the app.

Under "Settings & more → Units". There you pick kilograms, pounds or stones for weight and centimetres or feet and inches for height and body measurements. Trendcurve always stores kilograms internally, so switching only converts what you see and leaves your history untouched.

The easiest way is the iCloud backup: if it is active, Trendcurve offers to restore after a reinstall by itself. Alternatively export a JSON backup under "Settings & more → Export, backup & import", share it and import it on the new device.

Trendcurve backups (JSON), Trendcurve CSV as well as CSV exports from Happy Scale, Libra, openScale and Excel. You get a preview before the import, and daily values that already exist are not created twice.

Under "Settings & more → Reminders" you set the time and weekdays. With the smart reminder you are only reminded if there is no entry for today yet. Body measurements get their own weekly reminder with its own day and time. Pro allows several times and streak protection. All reminders run locally on your device.

Yes. Press and hold the handle at the top right of a card and drag it to the position you want. Under "Settings & more → Customise dashboard" you can show or hide individual cards, for example BMI, body measurements, the calorie budget, patterns, progress photos or the monthly report.

Via "Settings & more → Manage subscription & purchases" or through the iPhone settings: Settings → Apple Account → Subscriptions → Trendcurve Pro. After cancelling you keep access until the end of the current billing period. If you bought Pro as a one time purchase, it stays active permanently.

Under "Settings & more → Export, backup & import → Delete all data" or by uninstalling the app. An active iCloud backup is deleted in the same place.