Scientific Calculator Plus 991 is an advanced scientific calculator app suitable for those who are into scientific and engineering calculations. It provides several features that make it stand out from other scientific calculators in the market. This app is available on the Google Play Store and can be downloaded for free with ads or for a fee to remove ads.
Features
1. Trigonometric Functions
This application provides you with all the essential functions needed for trigonometry, including sine, cosine, tangent, as well as their inverse functions. Additionally, you can easily switch units between degrees and radians in mid-calculation.
2. Advanced Math Functions
The Scientific Calculator Plus 991 also boasts of a vast array of advanced math functions like logarithmic functions, exponential functions, and square roots. These functions aid greatly in complex mathematical calculations.
3. Physical Constants Library
The app comes with a library of physical constants like the speed of light, electron charge, Planck constant, and many others. It saves time not having to lookup these values manually every time they are needed.
4. Unit Converter
The unit conversion feature is an added plus making this app not just only a scientific calculator but also a useful tool for conversion of various units like Length, Temperature, Volume, and Weight.
Pros
1. User-Friendly Interface
The user interface is designed to be clean, simple, and easy to use, even for first-time users. The large buttons and clear display make it a must-have app for daily usage in a professional setting.
2. Accurate Calculations
The Scientific Calculator Plus 991 performs calculations accurately, and you can trust the results to be precise enough for your scientific and engineering work.
3. Ad-Free Version Availability
The app has two versions; one that is free with ads, and a paid version without ads. This option is great for those who do not wish to see ads while they work, making the paid version worth it.
Cons
1. Limited Customization
The main weakness of this app is a lack of customization. There are few themes to choose from, and it is not possible to change button sizes, color or add new functions.
2. No Option for Data Input Editing
If a user types wrong, there is no way to delete or correct the value inputted. One would have to start over, which causes inconvenience.
Comparison to Similar Apps
Compared to other scientific calculator apps, The Scientific Calculator Plus 991 is one of the best because of its simplicity, accuracy and clean interface. It provides necessary features for scientific and engineering calculations, physical constants library, and unit conversion. While it lacks customizability, this app is excellent for quick and precise calculations.
Tips for Using the App
1. Use parenthesis when doing complex calculations
The calculator follows the order of operations when prompted correctly using parentheses for grouping any orders of operation.
2. Use the swipe feature.
Users can swipe left or right on the calculator's display to view their past calculations, helping catch errors and revise past problems quickly.
3. Make use of the “random” Dataset
By clicking the “Rand” button, the application will display a random number between 0-1 inclusive, useful in statistical analyses.
Conclusion
Scientific Calculator Plus 991 is an exceptional scientific calculator app that is suitable for all educational and professional needs. The interface is user-friendly, and the app is accurate with its calculations. The limited customizability might not appeal to everyone, but the available features definitely make up for it. We highly recommend this app and suggest it as the primary calculator for all scientific and engineering computations.
Updated 05-08-2023
Overview
Scientific Calculator Plus 991 is an advanced scientific calculator app suitable for those who are into scientific and engineering calculations. It provides several features that make it stand out from other scientific calculators in the market. This app is available on the Google Play Store and can be downloaded for free with ads or for a fee to remove ads.
Features
1. Trigonometric Functions
This application provides you with all the essential functions needed for trigonometry, including sine, cosine, tangent, as well as their inverse functions. Additionally, you can easily switch units between degrees and radians in mid-calculation.
2. Advanced Math Functions
The Scientific Calculator Plus 991 also boasts of a vast array of advanced math functions like logarithmic functions, exponential functions, and square roots. These functions aid greatly in complex mathematical calculations.
3. Physical Constants Library
The app comes with a library of physical constants like the speed of light, electron charge, Planck constant, and many others. It saves time not having to lookup these values manually every time they are needed.
4. Unit Converter
The unit conversion feature is an added plus making this app not just only a scientific calculator but also a useful tool for conversion of various units like Length, Temperature, Volume, and Weight.
Pros
1. User-Friendly Interface
The user interface is designed to be clean, simple, and easy to use, even for first-time users. The large buttons and clear display make it a must-have app for daily usage in a professional setting.
2. Accurate Calculations
The Scientific Calculator Plus 991 performs calculations accurately, and you can trust the results to be precise enough for your scientific and engineering work.
3. Ad-Free Version Availability
The app has two versions; one that is free with ads, and a paid version without ads. This option is great for those who do not wish to see ads while they work, making the paid version worth it.
Cons
1. Limited Customization
The main weakness of this app is a lack of customization. There are few themes to choose from, and it is not possible to change button sizes, color or add new functions.
2. No Option for Data Input Editing
If a user types wrong, there is no way to delete or correct the value inputted. One would have to start over, which causes inconvenience.
Comparison to Similar Apps
Compared to other scientific calculator apps, The Scientific Calculator Plus 991 is one of the best because of its simplicity, accuracy and clean interface. It provides necessary features for scientific and engineering calculations, physical constants library, and unit conversion. While it lacks customizability, this app is excellent for quick and precise calculations.
Tips for Using the App
1. Use parenthesis when doing complex calculations
The calculator follows the order of operations when prompted correctly using parentheses for grouping any orders of operation.
2. Use the swipe feature.
Users can swipe left or right on the calculator's display to view their past calculations, helping catch errors and revise past problems quickly.
3. Make use of the “random” Dataset
By clicking the “Rand” button, the application will display a random number between 0-1 inclusive, useful in statistical analyses.
Conclusion
Scientific Calculator Plus 991 is an exceptional scientific calculator app that is suitable for all educational and professional needs. The interface is user-friendly, and the app is accurate with its calculations. The limited customizability might not appeal to everyone, but the available features definitely make up for it. We highly recommend this app and suggest it as the primary calculator for all scientific and engineering computations.