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Checking an angle

Use Surface mode with the phone’s face against the surface. Remove a case if it prevents flat contact. Settings → Sensor Help explains how to check a known flat surface. Zero sets a temporary reference; it does not calibrate the sensor. Readings are guidance and do not establish certified accuracy.

Pro purchase and restore

On iOS, Pro is one non-consumable purchase covering Copy, custom angle entry and saved named targets. There is no subscription. Apple shows the actual price in your currency before purchase.

To recover an eligible purchase, use the same Apple Account and choose Restore purchases in Settings or the paywall. Restore recovers Pro access, not local History or targets. Pending approval grants no paid access; do not purchase again while waiting.

Pro is temporarily free for the first two calendar months after public launch. During that period there is no purchase prompt or automatic charge. Basic measurement and History stay free afterward.

Local History and targets

Use an explicit Save action to add measurements to History. Swipe a saved target left to reveal Delete, then confirm. Removing a target does not delete measurements in History. Local data may be lost after uninstall or device migration.

Refunds

Apple handles refund eligibility. Visit Apple’s Report a Problem page. A refunded or revoked purchase may remove paid Pro access while preserving local records.