📈Last 7 days+159 installs — 15% faster than the week before (+138) · 19/day since Oct 7
🏆Among Books & Reference appstop 5% by installs gained this week (364 peers growing)
🛠Updatesquiet · updated 93 days ago
Installs since launch
+643 installs
since Oct 7
Update history
1.6.0Aug 10, 2026 · seen Oct 21, 2026
Crash fix
Only the current version so far — new entries appear as the app ships updates.
Citadel of the Believer is a books & reference app by Invisible Space with 1,000+ downloads (about 1.5K estimated). +159 installs in the last 7 days. Released Jul 18, 2026. Install growth, rank history, SDKs and ad networks.
From the store listing: “Fortress of the Muslim (Hisnul Muslim): daily duas, prayer times & Hijri dates.”
