Scientific calculator plus 991
Contains adsIn-app purchases
4.9star
490K reviews
10M+
Downloads
PEGI 3
info
About this app
Scientific calculator 300 plus, 991 is the calculator for students and engineering student. Calculator 991 plus provides powerful functions in a real calculator 991 300 . It makes advanced calculator 991 become the most useful calculator for university and school.
Application includes some calculators inside:
- Basic calculator 300 plus
- Advanced calculator 115 plus
- Scientific calculator 991
- Scientific calculator 991 plus
- Graphing calculator 84 plus
Let's see some special features:
◉ Basic calculator 300 plus and 115 plus: supports from basic mathematics to advanced math functions: percentage, powers, roots, trigonometric, logarithms calculator. Fraction calculation 991 supports convert fraction to decimal, mixed fraction and solve fractions problems.
◉ Advanced calculator 115 plus: combines of hyper calculator and simple scientific calc. This calculator is a multi-functional advanced calculator 991 with all features in one app. Such as linear algebra, calculus, complex numbers, display result in rectangular and polar coordinates, matrix and vector.
◉ Scientific calculator 991 plus: includes smart equation solver. Equation solver can solve quadratic, cubic equations, systems of equations. Caluculator solves any polynomial. Smart scientific calculator 991 has exponent calculator contains scientific calculations such as derivative, integral, square root calculation, factorial calculation, pi calculation, equation solver.
◉ Scientific calculator 991: supports calculate with infinity number of digits, prime factors, random numbers, combinations, permutations, GCD and LCM. This calculator 991ex is a real engineering simulator. Scientific calculator has features of 500 es, 500 ms, 300 es plus, 991 es plus. Calculator keyboard layout same as calculator 300 es plus, 991 ex and es plus.
◉ Graphing calculator 84 plus supports function graph, polar, parametric and implicit function. Graphing calculator 84 can draw tangent, tracing, derivative, root, min and max. It simulates for graphing caluculator 83 and t1 84, 84 plus.
◉ Integral calculator 991 plus provide powerful calculator to calculate integrate, derivative, differentiation and integration.
◉ This scientific calculator 991 includes CAS (computer algebra system), which can perform symbolic calculation.
◉ Some other features: math formula, physics formula, unit conversion, theme, font and programming.
Application includes some calculators inside:
- Basic calculator 300 plus
- Advanced calculator 115 plus
- Scientific calculator 991
- Scientific calculator 991 plus
- Graphing calculator 84 plus
Let's see some special features:
◉ Basic calculator 300 plus and 115 plus: supports from basic mathematics to advanced math functions: percentage, powers, roots, trigonometric, logarithms calculator. Fraction calculation 991 supports convert fraction to decimal, mixed fraction and solve fractions problems.
◉ Advanced calculator 115 plus: combines of hyper calculator and simple scientific calc. This calculator is a multi-functional advanced calculator 991 with all features in one app. Such as linear algebra, calculus, complex numbers, display result in rectangular and polar coordinates, matrix and vector.
◉ Scientific calculator 991 plus: includes smart equation solver. Equation solver can solve quadratic, cubic equations, systems of equations. Caluculator solves any polynomial. Smart scientific calculator 991 has exponent calculator contains scientific calculations such as derivative, integral, square root calculation, factorial calculation, pi calculation, equation solver.
◉ Scientific calculator 991: supports calculate with infinity number of digits, prime factors, random numbers, combinations, permutations, GCD and LCM. This calculator 991ex is a real engineering simulator. Scientific calculator has features of 500 es, 500 ms, 300 es plus, 991 es plus. Calculator keyboard layout same as calculator 300 es plus, 991 ex and es plus.
◉ Graphing calculator 84 plus supports function graph, polar, parametric and implicit function. Graphing calculator 84 can draw tangent, tracing, derivative, root, min and max. It simulates for graphing caluculator 83 and t1 84, 84 plus.
◉ Integral calculator 991 plus provide powerful calculator to calculate integrate, derivative, differentiation and integration.
◉ This scientific calculator 991 includes CAS (computer algebra system), which can perform symbolic calculation.
◉ Some other features: math formula, physics formula, unit conversion, theme, font and programming.
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Ratings and reviews
4.9
475K reviews
andrew hardy
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March 29, 2025
It has a really nice looking design and impressive features and I wourd have upgraded to pro. However, I uninstall it after a little while of use as I kept getting annoyed with a 2 registered rather than the decimal point I had reached for. Also, the calculator incorrectly thinks that one divided by zero is infinite but this is wrong and it should display undefined / error in this case.
1 person found this review helpful
Tristan McBarnet
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November 18, 2024
So many features. It does so much more than any normal calculators and it's so quick with it all. Also the ads barely cover any of the screen so there not a problem. This genuinely does 10x more than any £200 graphing calculator and it's free. I could actually spend hours just trying to find every feature. It can probably solve any gcse or a level maths question. Literly it can do everything. You don't even lose much by not getting the premium version. They are being so generous with this.
132 people found this review helpful
L Gander
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January 10, 2025
I had the free version for ~ 24 seconds before buying premium. Everything you'd want in a calc and more. You're looking at the lovechild of casio and wolfram alpha come to life. Everything needed is present whilst not becoming cluttered, with great use of submenus that doesn't get overly complex. Formula menus that let you favourite what you need. Faster and more convenient graphing than the popular ones out there. You know it's good when a calculator app of all things motivates my first review!
77 people found this review helpful
What’s new
We appreciate all valuable feedback.
In this update, we added new features, fixed some problems and improved the math engine.
Thanks for using our app.
In this update, we added new features, fixed some problems and improved the math engine.
Thanks for using our app.
App support
About the developer
LE THI KIM CUC
kimcuc21333@gmail.com
An Lac, Dinh An
Lap Vo
Đồng Tháp 870000
Vietnam
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