Email help@wicklightlabs.com and we'll reply as soon as we can.
From the doses you log and each medicine's half-life and time to peak on its prescribing information. It's an estimate, not a blood test. In the app, tap the ⓘ next to the level for the details and sources.
Check that notifications for Glipsy are on in the iPhone's Settings → Notifications → Glipsy, and that "Remind me" is on for the medicine in Glipsy's Settings.
Your log stays on your phone and isn't in iCloud. In Glipsy, open Settings → Save a backup, keep the file in Files, then on the new phone open Settings → Restore from a backup. Progress photos aren't in backups.
To change what Glipsy can read or save, open the Health app, tap your profile, then Apps → Glipsy.
Open Settings in the app and tap Restore Purchases.
Subscriptions are managed in your Apple Account settings. The free features keep working after you cancel.