Best Right Triangle Solver Apps

250+ iOS apps curated and reviewed

3.8 avg rating
17 free apps
Updated August 2026

Triangle Calculator is the household name in right triangle solver, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Right Triangle Solver Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Triangle CalculatorTriangle CalculatorFree5.0★ (2)NoNoMay 2026
2Trig SolverTrig SolverFree4.3★ (78)NoNoAug 2026
3Triangle Solver Free - Geometry CalculatorTriangle Solver Free - Geometry CalculatorFree3.6★ (40)NoYesMay 2026
4Triangle SolverTriangle SolverFree4.2★ (30)NoNoAug 2026
5Triangle Solver for iOS 7Triangle Solver for iOS 7Free4.4★ (5)NoNoMay 2026
6TriSolver - Triangle SolverTriSolver - Triangle SolverFree1.0★ (1)NoJun 2026
7Triangle Calculator PythagorasTriangle Calculator PythagorasFree4.0★ (1)YesYesMay 2026
8Right Triangle - CalculatorRight Triangle - CalculatorFree3.8★ (6)NoYesAug 2026

Top Picks for Right Triangle Solver

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.

Trig Solver#2

Trig Solver by Creature Code Mobile, LLC

Strong Contender
🔧 Utilities
4.3😐(78 ratings)
Free
Trig Solver screenshot 1
Trig Solver screenshot 2

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.

What We Love

  • 👍 Simple and easy to use
  • 🚀 Fast calculations
  • ✅ Accurate results (for many users)
  • 💡 Useful for schoolwork

Room to Improve

  • 🐛 Inaccurate results reported
  • 💸 Ads are present and distracting
  • 📉 Rounding issues

More Right Triangle Solver apps to explore

4
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
5
Triangle Solver for iOS 7
Triangle Solver for iOS 7
Triangle Solver for iOS 7
by Amit Jain
Free

This app helps solve various types of triangles, including SSS, SSA, SAS, AAS, ASA, and AAA. It offers a straightforward and functional tool for geometric calculations.

Solves SSS trianglesSolves SSA trianglesSolves SAS triangles
📚 Education
(5)
free
6
TriSolver - Triangle Solver
TriSolver - Triangle Solver
TriSolver - Triangle Solver
by Steve Richardson
Free

This free utility app helps users solve triangle-related problems for both right-angled and regular triangles. It also offers solutions for 20 other geometric shapes, making it a versatile tool for calculations.

Solve right-angled trianglesSolve regular trianglesCalculate 20 other shapes
🔧 Utilities
(1)
free
7
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
8
Right Triangle - Calculator
Right Triangle - Calculator
Right Triangle - Calculator
All measures, step-by-step
Free

Instantly solve geometry homework and prepare for exams with this free calculator. It provides complete step-by-step solutions for all triangle quantities, including legs, hypotenuse, height, angles, perimeter, and area. Access learning videos and manage your solutions.

Step-by-step solutionsCalculates legs, hypotenuse, height, angles, perimeter, areaSupports all length units
📚 Education
(6)
free with in-app purchases
9
Trigonometry Master
Trigonometry Master
Trigonometry Master
Triangle Calculator
$12.99

Easily calculate unknown sides, angles, area, and perimeter of any triangle. Supports both right and oblique triangles with visual input modes and adjustable decimal places for accuracy. Includes a history tape and email sharing for recent calculations.

Solves right and oblique trianglesCalculates sides, angles, area, perimeterDraws calculated triangles
🔧 Utilities
(2)
paid
10
Ezy Triangle
Ezy Triangle
Ezy Triangle
by KGiants
Free

This tool helps solve triangle problems by calculating unknown sides and angles using given information. It also provides a reference for various triangle formulas and allows interactive manipulation of the triangle.

Solve triangles with 3 given quantitiesHandles ambiguous casesInteractive triangle manipulation
📚 Education
(8)
free
11
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
12
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
13
Triangle Solver
Triangle Solver
Triangle Solver
Step-by-Step Math Solutions
Free

This app provides step-by-step solutions for triangle calculations and angle conversions. It includes practice exercises, a trigonometry formula sheet, and an integrated math keyboard for easy input. Ideal for students and professionals needing to master triangle properties.

Step-by-step triangle calculationsAngle conversionPractice trigonometry exercises
📚 Education
(2)
ad-supported
14
TriGoTriFree
TriGoTriFree
TriGoTriFree
by Giovanni Bellu'
Free

This educational app helps solve triangle problems. It offers a free version for right-angled triangles and a full version for general triangles. Users can easily select different triangle cases to solve.

Solve right-angled trianglesSelect various triangle casesEducational tool for geometry
📚 Education
(0)
free
15
Isosceles Triangle
Isosceles Triangle
Isosceles Triangle
All measures, step-by-step
Free
📚 Education
(0)
16
Triangle & Angle calculator
Triangle & Angle calculator
Triangle & Angle calculator
Geometry, angle, formulas
Free

Easily solve geometry exercises and verify your calculations with this tool. It simplifies complex problems with a single click, making math more accessible.

Solve geometry exercisesCheck calculationsSimple click interface
📚 Education
(209)
free with in-app purchases
17
Pythagorus doodlus
Pythagorus doodlus
Pythagorus doodlus
Visual triangle calculator
Free
📊 Productivity
(0)
18
Triangle Calc A
Triangle Calc A
Triangle Calc A
Shape Calc
$0.99
📊 Productivity
(0)
19
Camera Math Solver - UpStudy
Camera Math Solver - UpStudy
Camera Math Solver - UpStudy
photo math solver
Free

Instantly solve academic questions by taking a photo. Get step-by-step explanations, ask follow-up questions, and receive writing assistance. Features include a math solver, AI tutor, and personalized learning sessions.

Scan and solve academic questionsStep-by-step explanationsMath solver for various levels
📚 Education
(1.2K)
free with in-app purchases
20
Geometry Solver
Geometry Solver
Geometry Solver
by Steve Richardson
$0.99

This application assists users in solving a wide range of geometry problems for both 2D and 3D shapes. It offers solutions for various polygons, circles, ellipses, and complex triangular calculations. Optimized for iPhone, it provides quick and user-friendly geometry problem resolution.

Solves 2D shapes (Square, Circle, etc.)Solves 3D shapes (Sphere, Cube, etc.)Complex triangle solving
🔧 Utilities
(5)
paid

FAQ about Right Triangle Solver

What are the best right triangle solver apps for iPhone?
Triangle Calculator tops our right triangle solver 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 right triangle solver apps we rank are free to download, including Triangle Calculator and Trig Solver.
Triangle Calculator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 250+ right triangle solver 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.