I paid before and reinstalled. How do I get my unlock back?
More → Restore a previous purchase. It reads your App Store purchase history, so it works without any account, as long as you are signed in to the same Apple ID that bought it.
Where is my data, and how do I keep a copy?
It is in a database file inside the app on your phone. Backup → Back up now writes a complete copy and opens the share sheet; choosing Save to Files → iCloud Drive gives you an off-device copy that you control. Restore takes that same file back.
My hourly rate looks wrong.
Check whether some sessions have no hours recorded. Roll deliberately leaves those out of the per-hour figures rather than counting them as zero hours, and the Stats screen says how many were excluded. Adding a duration to those sessions will bring them into the calculation.
Can I import from another app?
Yes, from any CSV. More → Import from CSV, then map the columns and check the preview before anything is written. There is a fuller guide on the Switching apps page.
Will you add cloud sync?
No. Needing an account is the thing that loses people their history, and avoiding it is the point of this app. If you want a copy somewhere else, the backup file is yours to put wherever you like.
Will this become a subscription?
No. It is one payment. Nothing you can already do will move behind a paywall later, and export stays available forever once you have paid.