Best Angle Calculator Triangle Apps

219+ iOS apps curated and reviewed

4.3 avg rating
15 free apps
Updated July 2026

Out of 219+ angle calculator triangle apps on iOS, 15 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Angle Calculator Triangle

Calculator +#1

Calculator + by Sarah Ragab

Scientific Calc Plus Fraction
Editor's Choice
🔧 Utilities
4.6😊(9.6K ratings)
FreeAdsIn-App Purchases
Calculator + screenshot 1

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

What We Love

  • 👍 Great features and easy to use
  • 👍 Efficient and quick
  • 👍 Versatile, functional calculator
  • 👍 Fantastic, easy to use app

Room to Improve

  • 🐛 New updated layout is awful
  • 🐛 App is now terrible
  • 🔒 Paying customer screwed over by update
Triangle Calculator#2

Triangle Calculator by Kent Johansson

Right angle triangle solver
Strong Contender
📊 Productivity
5.0(2 ratings)
Free
Triangle Calculator screenshot 1
Triangle Calculator screenshot 2
Triangle Calculator screenshot 3
Triangle Calculator screenshot 4
Triangle Calculator screenshot 5
Triangle Calculator screenshot 6

Calculate side lengths, angles, area, and perimeter of right-angle triangles. Visualizes the triangle with adjustable precision and offers options to rotate, flip, and customize themes. Reuses previous entries for efficiency.

More Angle Calculator Triangle apps to explore

4
Triangle Angles Calculator
Triangle Angles Calculator
Triangle Angles Calculator
With convenient visual input
Free

Easily calculate unknown sides, angles, and other parameters for various triangle types. Features interactive visualizations and works offline, making it ideal for students and professionals needing quick, accurate geometric solutions.

Calculate unknown triangle parameters from 2-3 known valuesInteractive visualization of triangle typesReal-time calculations with intuitive interface
📊 Productivity
(0)
free
5
Geometry Calculator - Triangle
Geometry Calculator - Triangle
Geometry Calculator - Triangle
Angle, area, volume solver
$3.99

Perform a wide range of geometric calculations for various shapes including triangles, rectangles, circles, and prisms. Features an intuitive interface with instant recalculations and interactive visualizations. Customize units and decimal places for precise results.

Calculate angles, sides, perimeter, and areaSupports triangles, rectangles, circles, spheres, cones, trapezoids, parallelograms, cylinders, and rectangular prismsInstant recalculations based on input
🔧 Utilities
(4)
paid
6
Calculator for iPad₊
Calculator for iPad₊
Calculator for iPad₊
Basic, Scientific, Plus Calc
Free

This app offers both basic and advanced scientific calculations with an intuitive interface designed for tablets and phones. It includes features like currency conversion, calculation history, and the ability to share results. An optional premium membership removes ads and provides enhanced support.

Basic & Scientific CalculatorAdvanced Scientific FunctionsLive Currency Converter
🔧 Utilities
(126K)
free with in-app purchases
7
Figure calculator ShapeInfo
Figure calculator ShapeInfo
Figure calculator ShapeInfo
Geometric shape calculator
Free

Easily calculate lengths, angles, and areas of various geometric shapes. Input known values and instantly get precise results for a wide range of 2D and 3D figures. Ideal for students and engineers needing quick geometric computations.

Calculate lengths, angles, and areaSupports 2D shapes (triangle, circle, ellipse)Supports 3D shapes (pyramid, prism, cone, cylinder, sphere)
📊 Productivity
(134)
ad-supported
8
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.

Step-by-step solution hintsMath Photos SolverHandwriting Recognition
📚 Education
(6.2K)
free with in-app purchases
9
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Scientific Graphing Calculator
$5.99

This app serves as a powerful scientific graphing calculator, offering advanced mathematical functions and graphing capabilities. It includes a built-in AI assistant for math queries and a comprehensive user manual. Ideal for students and professionals needing complex calculations and visualizations.

Scientific and graphing calculatorAI-powered math assistantComplex number calculations
📚 Education
(12K)
free with in-app purchases
10
Triangle Solver
Triangle Solver
Triangle Solver
by William Jockusch
Free

Calculate unknown sides and angles of a triangle with ease. Supports various input combinations, including two angles and one side, two sides and one angle, or three sides.

Calculate unknown sidesCalculate unknown anglesTwo angles and one side input
📚 Education
(30)
free
11
Construction Calculator
Construction Calculator
Construction Calculator
Feet Inch Calculator
Free

This app is a powerful calculator designed for construction and woodworking professionals, as well as students. It simplifies calculations involving feet, inches, and fractions, offering conversions between various measurement units and displaying equations and results simultaneously. Advanced features are available through optional in-app purchases.

Decimal to fraction converterFraction to decimal conversionSimultaneous equation and result display
🔧 Utilities
(554)
free with in-app purchases
12
Trigonometry Calculator.
Trigonometry Calculator.
Trigonometry Calculator.
Simple Triangle Calculator
Free

This app calculates key values for right-angled and scalene triangles with high precision. It offers a user-friendly interface, flexible angle units, and includes a reference guide to trigonometric formulas. A subscription unlocks calculation steps and removes ads.

Right-angled & scalene triangle supportFormula reference guideAccurate side, angle, and area calculations
🔧 Utilities
(3)
free with in-app purchases
13
Symbolab - AI Math Solver App
Symbolab - AI Math Solver App
Symbolab - AI Math Solver App
Calculator & Photo Solver
Free

Solve any math problem by typing it in or taking a photo. Get step-by-step solutions for subjects from pre-algebra to calculus. This AI-powered tool offers personalized learning and insights for over 300 million users.

Photo math solverStep-by-step solutionsCalculus calculator
📚 Education
(26K)
free with in-app purchases
14
Angle Finder - Trig Calculator
Angle Finder - Trig Calculator
Angle Finder - Trig Calculator
Triangle Calculator
Free

This app simplifies complex geometry and trigonometry calculations. It helps users find angles, side lengths, and areas of various shapes, serving as a portable math assistant for students and professionals.

Triangle solverAngle finderPCD & chord calculator
🔧 Utilities
(1)
free with in-app purchases
15
Geometry Solver: Calculator
Geometry Solver: Calculator
Geometry Solver: Calculator
Offline. Angle Finder & More
Free

This offline geometry toolkit provides fast, accurate solutions for homework, studying, and quick checks. It offers tools for angles, triangles, circles, and various shapes, along with coordinate and analytic geometry calculations. Designed for high school students and everyday problem-solving.

Offline geometry toolkitAngle finder for triangles and linesTriangle solver (including right triangles)
📚 Education
(15)
free with in-app purchases
16
Triangle Solver Free - Geometry Calculator
Triangle Solver Free - Geometry Calculator
Triangle Solver Free - Geometry Calculator
by 境 饶
Free

This app calculates missing values for both right and irregular triangles. Simply input two known values for a right triangle or three for an irregular one, and it will compute the remaining sides and angles.

Right triangle solverIrregular triangle solverCalculates missing sides
📊 Productivity
(40)
free
17
GraphNCalc83
GraphNCalc83
GraphNCalc83
Graphing calculator
$12.99

This app offers a powerful graphing calculator experience with touch-based input for enhanced interaction. It supports natural textbook notation, advanced math functions, and various plotting capabilities. Users can also utilize its programming features and built-in tools like unit conversion and a periodic table.

Touch-based graphing and editingNatural textbook notation inputAdvanced math and statistical functions
📚 Education
(3.8K)
paid
18
Angles Calculator
Angles Calculator
Angles Calculator
by Essence Computing
$0.99

This app helps users understand and calculate angles and lengths in right-angled triangles. It provides step-by-step workings for each calculation, aiding comprehension of trigonometric ratios and triangle properties. It also calculates the triangle's area with explanations.

Calculates triangle angles and lengthsExplains trigonometric ratios (sine, cosine, tangent)Shows step-by-step workings
📚 Education
(10)
paid
19
Quick Graph
Quick Graph
Quick Graph
Scientific Graphing Calculator
Free

This powerful graphing calculator leverages multitouch displays for 2D and 3D equation visualization. It supports various coordinate systems and offers features like equation editing, evaluation, and a library for storing common formulas. Advanced features are available through an in-app purchase.

2D and 3D graphingMultiple coordinate systemsEquation evaluation
📚 Education
(405)
free with in-app purchases
20
Trigonometry Help Lite
Trigonometry Help Lite
Trigonometry Help Lite
Triangle Calculator + Workings
Free

This app quickly calculates unknown angles and sides of right-angled triangles. It offers a workings view for detailed solutions, scale drawings, and a formula reference. Input angles in various formats and customize decimal precision.

Solve right-angled trianglesView detailed math workingsScale drawing of solved triangle
📚 Education
(688)
free with in-app purchases