Samsung Calculator covers everyday sums, but HiPER Scientific Calculator is the one to try when the work turns to algebra, graphs and equations. It comes from HiPER Labs and first appeared on April 8, 2015. Its layouts adapt to the screen: pocket, compact and expanded for tablets, and numbers can reach 100 digits of significand.

Who the 991-style function set suits

The listing names the Casio-style 991 line (991ES Plus, 991EX, 991MS, 991CW) plus the 570, 82 and 100MS models as the functions it mirrors. That makes it a natural fit for students who already know those keys and want the same tools on a phone.

Three layouts cover different screens: pocket for small devices, compact for smartphones in portrait and landscape, and expanded for tablets. Tablets also get a multiline display with the full calculation history.

Symbolic algebra, 3D graphs and 100-digit precision

Numbers can run to 100 digits of significand and 9 digits of exponent. Fractions, mixed numbers and periodic numbers are supported, and periodic numbers convert to fractions.

The algebra side covers equations with one or more variables, systems of equations, derivatives, integrals and limits. Graphs include functions, equations, integral areas and 3D plots. Matrices, vectors, statistics, regression analysis and complex numbers are also listed.

A calculation details view adds alternative forms of a result, all complex roots and the unit circle. You can also select part of an expression and apply operations to just that selection.

Premium steps, photo input and ads

The app is free and shows ads. No in-app purchases are listed, yet the store text marks photo entry of expressions and the more detailed solution steps as premium, so check the listing before counting on those two features.

It needs Android 7.0 or newer. Version 12.1.4 was last updated on November 1, 2026.