If you hunt in a spot with no service. This app is useless.
Response from developer
Paying once unlocks every call permanently; all audio is bundled inside the app, so nothing needs to download afterward. You only need a brief connection to activate or restore the purchase—once it’s confirmed, the app runs fully offline. Still seeing locks? Tap “Restore Purchases” when you have signal, or reinstall/update the app to reset things; if that fails, email info@sifterapps.com and we’ll try to help right away.



