📈Last 7 days+1.4K installs — 23% slower than the week before (+1.7K) · 182/day since Oct 9
🏆Among Education appstop 1% by installs gained this week (1889 peers growing)
🛠Updatesactively updated · updated 12 days ago · every ~24 days (2 updates tracked)
Installs since launch
+6,177 installs
since Oct 9
Update history
3.0Oct 31, 2026
Fixed android 5.0 black screen<br>Fixed 32bit device force close<br>Math AI Helper & Camera OCR Math Page Scanner<br>Live Currency Converter<br>12-Category Unit & Value Converter<br>Interactive Graphing & Function Plotter<br>Advanced Matrix & Vector Calculation Tools<br>Statistical Analysis Tools<br>Dynamic 7-Theme Color System<br>Fonts & Styles Customization Menu<br>Interactiv
2.9Oct 7, 2026 · seen Oct 22, 2026
Fixed android 5.0 black screen<br>Fixed 32bit device force close<br>Math AI Helper & Camera OCR Math Page Scanner<br>Live Currency Converter<br>12-Category Unit & Value Converter<br>Interactive Graphing & Function Plotter<br>Advanced Matrix & Vector Calculation Tools<br>Statistical Analysis Tools<br>Dynamic 7-Theme Color System<br>Fonts & Styles Customization Menu<br>Interactiv
FX 991 Calculator | Cal 991 is an education app by Virtual Tech World with 10,000+ downloads (about 12K estimated). +1.4K installs in the last 7 days. Released Jun 8, 2026. Install growth, rank history, SDKs and ad networks.
From the store listing: “Sciencetific Calculator 991 | FX 991 calculator | Cal 991 | Calc | Science Cal”
