Scientific Calculator FX 991

Scientific Calculator FX 991 is a capable scientific calculator for students, engineers, and technical work. It combines fast everyday calculation with structured advanced modes for complex numbers, statistics, distributions, spreadsheets, tables, equations, inequalities, base conversions, matrices, vectors, ratios, and math practice tools. Calculate and Complex modes are free. Scientific Calculator Pro unlocks the advanced modes with monthly, yearly, or lifetime access. The app is designed for direct input, readable results, local history, and quick switching between calculator workflows. It has no ads, no tracking, no accounts, and no analytics SDKs.

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