Best Angle Calculator Triangle Apps

244+ iOS apps curated and reviewed

4.3 avg rating
17 free apps
Updated August 2026

Out of 244+ angle calculator triangle apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Angle Calculator Triangle Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Triangle CalculatorTriangle CalculatorFree5.0★ (2)NoNoMay 2026
2Triangle & Angle calculatorTriangle & Angle calculatorFree4.0★ (209)NoYesAug 2026
3Calculator +Calculator +Free4.6★ (10K)YesYesAug 2026
4Triangle Angles CalculatorTriangle Angles CalculatorFreeNoNoJul 2026
5Trigonometry Calculator.Trigonometry Calculator.Free5.0★ (3)YesYesJul 2026
6iCalc Triangle Calculator ProiCalc Triangle Calculator ProFree was $1.993.6★ (5)NoNoAug 2026
7Triangle Solver Free - Geometry CalculatorTriangle Solver Free - Geometry CalculatorFree3.6★ (40)NoYesMay 2026
8Angle Finder - Trig CalculatorAngle Finder - Trig CalculatorFree3.8★ (4)NoYesAug 2026

Top Picks for Angle Calculator Triangle

Triangle Calculator#1

Triangle Calculator by Kent Johansson

Right angle triangle solver
Editor's Choice
📊 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.

Calculator +#3

Calculator + by xNeat.com

Graphing, Percentage, Triangle
Worth Considering
🔧 Utilities
4.6😊(10K 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

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
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
6
iCalc Triangle Calculator Pro
iCalc Triangle Calculator Pro
iCalc Triangle Calculator Pro
Angles, Area, Sides, Perimeter
Free
$1.99 | 100% OFF

Explore the fundamental properties of triangles with this interactive educational application. It allows users to delve into angles, area, sides, and perimeter, providing a hands-on approach to understanding geometric concepts.

Triangle property explorationCalculate anglesCalculate area
📚 Education
(5)
paid
7
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
8
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
(4)
free with in-app purchases
9
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
10
Triangle Calculate & Visualize
Triangle Calculate & Visualize
Triangle Calculate & Visualize
Angles, Sides, Area & Visuals
$0.99

This tool calculates triangle properties like side lengths, angles, area, and perimeter. It visually displays results with clear graphics, aiding understanding for students, educators, and professionals. Supports various units, precision settings, and multiple languages.

Calculate side lengths, angles, area, and perimeterVisualize triangle results graphicallySet angle units (degrees/radians)
🔧 Utilities
(1)
free
11
Triangle Calculator Pythagoras
Triangle Calculator Pythagoras
Triangle Calculator Pythagoras
Right Triangle Pythagoras
Free

This geometry tool simplifies right-angled triangle calculations. It instantly solves for missing sides, angles, area, and perimeter using the Pythagorean theorem and trigonometry. It also displays the formulas used for each calculation, aiding understanding.

Pythagorean Theorem SolverTrigonometry FunctionsInstant Area and Perimeter Calculation
📚 Education
(1)
free with in-app purchases
12
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
13
Trig Solver
Trig Solver
Trig Solver
by Creature Code Mobile, LLC
Free

This application calculates unknown sides and angles of both regular and right triangles. It supports various input combinations, including two sides and an angle, two angles and a side, three sides, or two sides and an angle for right triangles.

Regular triangle solverRight triangle solverCalculate with 2 sides and an angle
🔧 Utilities
(78)
free
14
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
(140)
ad-supported
15
Solve Right Triangle Pro
Solve Right Triangle Pro
Solve Right Triangle Pro
Calculates all quantities
$2.99

This app calculates all unknown quantities of a right triangle by inputting known values. It displays formulas, provides step-by-step solutions, and supports decimal and fraction inputs. Users can adjust decimal precision and view calculation history.

Calculates all right triangle quantitiesDisplays relevant formulasStep-by-step solutions
📚 Education
(3)
free
16
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
(768)
free with in-app purchases
17
Geometry Calculator Solver
Geometry Calculator Solver
Geometry Calculator Solver
Geometry & Trigonometry solver
Free

This app helps students, teachers, and professionals solve geometry and trigonometry problems. It calculates angles, areas, perimeters, and more for various shapes, providing formulas and steps for learning.

Calculates angles in degrees and radiansSolves for area, perimeter, and heightSupports various geometric shapes
📚 Education
(1)
free with in-app purchases
18
Triangle Help
Triangle Help
Triangle Help
by Robert Winkelman
Free

This utility app calculates missing sides and angles of a triangle given at least three known measures. It displays the formulas used for learning and supports angle input in degrees or radians, with adjustable decimal precision.

Solves for missing triangle sides and anglesDisplays formulas used for learningAccepts angles in degrees or radians
🔧 Utilities
(1)
free
19
TriangleData
TriangleData
TriangleData
Find any triangle dat
Free

This utility app helps you calculate triangle angles and data. It can determine if a corner is 90 degrees by taking measurements and inputting them into the app. You can also use it to calculate right triangle data.

Calculate triangle anglesCheck for 90-degree cornersInput measurements for calculation
🔧 Utilities
(0)
free
20
Triangle Calculators
Triangle Calculators
Triangle Calculators
by V PUGAZHENTHI
Free

This app simplifies triangle calculations with intuitive inputs and clear diagrams. It covers various triangle types and theorems, offering over 125 calculations and supporting multiple units and languages.

125+ triangle calculationsVisual diagramsBuilt-in formulas
📚 Education
(4)
ad-supported

FAQ about Angle Calculator Triangle

What are the best angle calculator triangle apps for iPhone?
Triangle Calculator tops our angle calculator triangle apps ranking as of August 2026, with a 5.0-star average from 2 App Store ratings, and it's free to download.
Yes — 17 of the top angle calculator triangle apps we rank are free to download, including Triangle Calculator and Triangle & Angle calculator.
Triangle Calculator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 244+ angle calculator triangle apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Triangle Calculator can compute the lengths of sides, angles, area, and perimeter of a right-angle triangle. It provides results with up to approximately 15 significant digits, calculated using 64-bit double precision.
Triangle Calculator is available on iPhone, iPad, and iPod touch devices. It is designed for the iOS ecosystem.