Scientific calculator plus 991
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563K reviews
Rated for 3+
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50M+
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Rated for 3+
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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.
Advanced scientific calculator 991 plus. Includes simulator 115 and 300 plus.
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Ratings and reviews
545K reviews
Mbongeni Simangaliso
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June 21, 2026
This scientific calculator completely saved the day when I didn't have a physical one, and it has genuinely helped me excel in Mathematics. It acts like a teacher by itself because it breaks down a single answer in multiple formats, including whole numbers, decimals, scientific notation, exponentials, and even graphs. The versatility of this app makes learning and visualizing math incredibly easy. I highly recommend it to anyone looking for a powerful, reliable tool!
43 people found this review helpful
SAMATICA EDUCATION TECHNOLOGY COMPANY LIMITED
June 24, 2026
We're so glad you found our app helpful in your math journey! It makes us happy to hear it's been a reliable tool for you. Feel free to share it with friends who might also benefit from its versatility.
Tahsin Himu
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July 25, 2026
One of the best scientific calculators out there. You got everything here for free. As a student, It saved me a lot of time. As a real calculator may sometimes be a pain, especially while doing any math, which includes algebra. It has all of the tools which a typical person would need in their life, even outside of academic purposes. Not only that it has all of the tools needed to do Math with algebraic expression, which saved a lot of time of mine.
26 people found this review helpful
SAMATICA EDUCATION TECHNOLOGY COMPANY LIMITED
April 18, 2026
Thanks for using our app and taking the time to share your experience with us! We're happy to hear you're enjoying it. Keep exploring, and feel free to tell your friends if you find it useful!
Mark McClan (formerly Blatchford)
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July 11, 2026
A highly functional calculator. Though I will likely never more than scratch the surface of its full capabilities, it is nice to know the functionality is probably there should I need it. It is great that it also has a functional set of unit converters available (40 converters at the time of posting). Go to Converters in the menu for a better user experience, or SHIFT-8 if you have a number already on screen.
30 people found this review helpful
SAMATICA EDUCATION TECHNOLOGY COMPANY LIMITED
July 12, 2026
Thank you for using our app and taking the time to share your thoughts. We're glad to hear you've had such a positive experience! We hope you keep enjoying the app, and feel free to share it with others if you find it useful.
What’s new
We appreciate all your valuable feedback.
In this update, we added new features, fixed some issues, and improved the math engine.
Thank you for using our app.
In this update, we added new features, fixed some issues, and improved the math engine.
Thank you for using our app.
Rated for 3+
Learn moreApp support
About the developer
SAMATICA EDUCATION TECHNOLOGY COMPANY LIMITED
kimcuc@samatica.com
257A, An Lac Quarter,
Lai Vung Commune
Đồng Tháp 870000
Vietnam
+84 707 975 842
