Scientific Calculator FX-991EX

Name: Scientific Calculator FX-991EX
Author: SciCalc

SciCalc

⬇ 1,000+ downloads

Est. actual: 2,267

Free

Released: Jun 22, 2026

No in-app purchases

No ads

Signals

4 this week · 3 positive All of this week's signals →

📈Last 7 days +785 installs — 102% faster than the week before (+388) · 54/day since Oct 7
🏆Among Tools apps top 5% by installs gained this week (1273 peers growing)
🛠Updates actively updated · updated 25 days ago · every ~7 days (2 updates tracked)
🔁Ownership moved between accounts of the same company, from Useful apps and tools to SciCalc · Oct 25, 2026

Installs since launch

+1,609 installs since Oct 7

Update history

1.0.21 Oct 19, 2026 · seen Oct 25, 2026

Added Numerical Methods for root finding, integration, interpolation, and differential equations, with result tables and graphs.<br>Added Transforms & Series, including Laplace, Fourier, Z-transforms, and series calculations.<br>Expanded matrix tools with eigenvalues, eigenvectors, and matrix decompositions.

1.0.19 Oct 12, 2026 · seen Oct 17, 2026

Added advanced matrix calculations and improved equation solving, mathematical accuracy, and result displays across calculator modes.<br><br>Improved typing speed, theme loading and selection, sound/vibration handling, and release security; disabled ads.

Scientific Calculator FX-991EX is a tools app by SciCalc with 1,000+ downloads (about 2.3K estimated). +785 installs in the last 7 days. Released Jun 22, 2026. Install growth, rank history, SDKs and ad networks.

From the store listing: “Scientific Calculator FX-991EX with graphing, calculus, matrices and units.”