📈Last 7 days+13 installs — 38% slower than the week before (+21) · 2/day since Oct 9
🏆Among Books & Reference appstop 30% by installs gained this week (377 peers growing)
⭐Rating steady at ★ 2.88 since Oct 9
🛠Updatesquiet · updated 42 days ago
Installs since launch
+44 installs
· 0 ratings
since Oct 9
Update history
4.0.0.1Sep 29, 2026 · seen Oct 17, 2026
-- Bug fixes and stability updates
Only the current version so far — new entries appear as the app ships updates.
Shellback is a books & reference app by Sea Warrior Mobile Apps with 10,000+ downloads (about 23K estimated). +13 installs in the last 7 days. Rated 2.9 from 129 ratings. Released Mar 6, 2015. Install growth, rank history, SDKs and ad networks.
From the store listing: “Official Navy leadership and management information in an easy-to-use app!”