Your clients' formulas, on your phone — never on someone else's server.
Questions, a bug, or a feature you want? Email me directly — I read every message and reply personally.
Is Formula Log a subscription? No. Pay once, keep it forever. No recurring charges, ever.
Where are my formulas stored? On your phone, and exportable to a file whenever you want. Version 1.0.1 also carries an iCloud backup, being switched on in stages — the Backup screen tells you whether your work is actually reaching iCloud. Formula Log has no accounts and no server of ours — that copy sits in your Apple account, where only your devices can read it.
What if I lose my phone or switch devices? Export a file anytime from Settings → Backup and keep it somewhere you control; restoring it on the new phone merges in without ever deleting anything already there. The Backup screen also shows when your work last reached iCloud, so you always know where you stand.
How do I restore a purchase? Open Settings and tap Restore Purchase.
Can I get my data out? Yes, anytime — Settings → Export gives you a CSV or JSON file with every client and formula. It's your data.