Math assistant - Fasten Tools

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About this app

“Fasten Tools” is a set of tools to solve various math problems. The app features algebra and geometry solver, a full-fledged unit converter as well as multiple text tools.

The main idea behind “Fasten Tools” is pretty simple — helping students to solve basic math problems in algebra and geometry, as well as some higher mathematics ones, e.g. matrices (determinant, rank, triangular and transposed matrix) and matrix operations (addition, subtraction and multiplication).
In geometry section, you can quickly calculate various parameters of figures, for example, the radius of inscribed and circumscribed circles, area, perimeter, various angles, etc.

Each element of the app is highly customizable to suit every taste!

List of tools:

Higher math
• Vectors conversions (cartesian, polar, cylindrical and spherical)
• Complex numbers conversions (cartesian, polar, indicative and angle forms)
• Complex numbers operations
• Matrix (determinant, rank, invertible, triangular, transposed, adjugate matrices)
• Matrix operations (addition, subtraction and multiplication)
• Linear Equation system using Kramer

Algebra
• Fraction solver
• Decimal number conversion
• Ratio
• Greatest common divisor and Lowest common multiple
• Percentage calculator
• Number factorization
• Even number division
• Quadratic equations
• Distance between points
• Arithmetic progression
• Geometric progression
• Boolean Expressions (Truth table, Perfect CNF, Perfect DNF, Reduced DNF, Minimal DNF)
• Values of the trigonometric functions

Geometry
• Circle
• Triangle
• Rectangle
• Regular polygon
• Graphs
• Lines

Converter
• Number system (binary, octal, decimal and hexadecimal)
• Computer storage
• Temperature
• Angle
• Length
• Time
• Speed
• Area
• Volume
• Mass
• Density (with Density Table)
• Pressure
• Force
• Energy and Work
• Power

Text
• Text to binary
• Text to octal
• Text to hexadecimal
• Text to Morse code
• Uppercase & Lowercase
• Capitalize words
• Capitalize sentences
• Reverse text
• Reverse words
• Random string
• Replace text
• Text similarity
• Keyboard layout

Miscellaneous
• Random number generator
• Grades calculator
• QR code generator
• Time difference
• Time addition
• Body Mass Index
• Basal Metabolic Rate
• Counter

Calculator

What’s new

Version 2.2
• Added to Misc tab:
• Body Mass Index
• Basal Metabolic Rate
• Counter
• Added Ratio
• Reworked Grades calculator
• More formulas
• More units in Converter (+inch' foot")
• Initial tab selection in Options + App Shortcuts
• Changed formula button to icon
• Try to rate us button
• Support for Android 16 (EdgeToEdge)

• Improved performance
• Removed redundant resources

• Fixed crashes
• Fixed Factorization copying
• Fixed dark theme ripple in Options