📈Last 7 days+3 installs — 67% slower than the week before (+9) · 0/day since Oct 7
🏆Among Education apps bottom 40% by installs gained this week (1724 peers growing)
🛠Updatesdormant · updated 482 days ago
Installs since launch
+15 installs
since Oct 7
Update history
1.04Jul 18, 2025 · seen Oct 20, 2026
Only the current version so far — new entries appear as the app ships updates.
Birefringence is an education app by Andrew L. Barlow with 1,000+ downloads (about 3K estimated). +3 installs in the last 7 days. Released Sep 4, 2018. Install growth, rank history, SDKs and ad networks.
From the store listing: “Interactive and configurable Michel Lévy chart with a detailed mineral database.”
