Scientific Calculator fx-991 – The Ultimate Math & Science Tool!
Struggling with math problems, equations, or integrals? Need a powerful scientific calculator to solve step-by-step?
With Scientific Calculator fx-991, you can calculate, graph, and find formulas instantly – making learning math, physics, and chemistry easier than ever!
Key Features
+ Step-by-step equation solver – Enter any equation and get a detailed step-by-step solution.
+ Advanced scientific functions – Solve fractions, algebra, derivatives, integrals, trigonometry, and more.
+ Graphing mode – Visualize mathematical functions interactively.
+ Extensive formula library – Access key formulas for math, physics, and chemistry in seconds.
+ Unit converter – Quickly convert between different measurement units.
+ Casio fx-991 inspired interface – A familiar and intuitive experience for students.
Perfect for high school and college students, engineers, and professionals in STEM fields!
Who is this app for?
High school students – Solve algebra, calculus, and physics problems efficiently.
College & university students – Master engineering, physics, and complex math subjects.
STEM professionals – Perform advanced calculations quickly and accurately.
Download Scientific Calculator fx-991 now and simplify your calculations!
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.
This has been very helpful for my Electro Technology classes. I don’t own a physical one and this is so useful plus free. There are ads but it’s not that bad they are not in your face. For the most part you can ignore them and they don’t throw it in your face forcing you to pay for it.
Developer Response
Amazing! Thank you for the 5-star review! 💖 We are so happy to know that you are satisfied with the app. If you have any suggestions to make it even better, feel free to share! 😊
Possibly the best free calculator app there is
Dissatisfied user 8897
I tried several popular calculator apps and they all have terrible user interfaces. I was looking for something as close a scientific calculator as possible, and this one is the best I’ve found. One suggestion would be to change the ☐² to X² and ☐⁻¹ To X ⁻¹
Developer Response
Thank you so much ❤️❤️❤️❤️
It’s free and it works
L Brower
It does what it says and the adds aren’t distracting and they don’t interrupt access to the calculator. There’s an option to pay but the paywall isn’t restricting me from anything I need to use.
Developer Response
We truly appreciate your feedback! ❤️ If there's any feature you’d like to see or improvements you need, let us know. We are always listening and working to make the app even better! 📈
Love the Calc
Most honest 878
I have had a great time using this calculator for school and it has helped me in so many ways
Developer Response
We truly appreciate your support! 🙌 Your 5-star rating means a lot to us. Keep enjoying HiEdu, and don’t forget to recommend it to your friends! 🎉
- Added Daily Challenge with 10 new math questions every day.
- Track your personal progress and compete on the 7-day leaderboard.
Version 1.9.3
The developer, Dinh Phuc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Identifiers
Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
Identifiers
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Dinh Phuc
Size
28.2 MB
Category
Education
Compatibility
Requires iOS 15.0 or later.
iPhone Requires iOS 15.0 or later.
iPad Requires iPadOS 15.0 or later.
iPod touch Requires iOS 15.0 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
