The Holy Quran, for iPhone, iPad, Mac and Android.
Open Settings in the app and tap Restore purchases. This is the usual fix after reinstalling the app, changing phone, or signing in with a different Apple Account or Google account from the one that bought it.
A purchase belongs to the store account that made it, so a purchase made on the App Store cannot be restored on Android, and the other way round.
Subscriptions are held by the store, not by us, so they are managed there:
Cancelling stops the next renewal and you keep Premium until the period you have paid for ends. A lifetime purchase is not a subscription and does not renew or expire.
Free, and staying free:
Premium adds translation, tafsir, search, seven further reciters, and the contents of the Learn tab.
You can open the Learn tab without Premium, look through Topics, Themes, Mutashabihat and Similar Ayat, and jump from any of them to a page, a surah or a verse. Navigation there is always free.
The mushaf, translations and tafsir are stored in the app and need no connection. Recitation audio streams, so listening needs a connection even though reading does not. There is no downloadable audio yet.
There are no accounts, no advertising and no tracking. Bookmarks and settings stay on your device. The full detail, including how to ask for deletion, is in the Privacy Policy.