Working Hours & Clients collects no data. There is no account, no analytics and no crash reporting. Your hours, clients and rates live on your device and nowhere else — no part of your ledger is ever sent anywhere.
The app makes one outbound request, and only when you ask for it: opening Support or Privacy Policy inside the app shows this page. That request carries nothing but the request itself, and this page sets no cookies.
Sync with iCloud is on by default and can be turned off in Settings. While it is on, Working Hours & Clients mirrors the ledger into the private iCloud storage of your own Apple account so a reinstall or your other iPhone or iPad sees the same entries. We have no server and no way to read that data; only you and Apple's iCloud infrastructure ever hold it. Sync runs while the app is open, not in the background.
The one-time unlock is a standard App Store in-app purchase, handled by Apple. Working Hours & Clients stores a single flag on your device recording that it was bought.
The App Store privacy label for Working Hours & Clients is therefore Data Not Collected. This page is static and sets no cookies.