Best Trigonometry Apps

248+ iOS apps curated and reviewed

4.0 avg rating
17 free apps
Updated August 2026

Out of 248+ trigonometry 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 Trigonometry Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Trigonometry for BeginnersTrigonometry for BeginnersFree4.7★ (10)YesYesAug 2026
2Trigonometry Help LiteTrigonometry Help LiteFree4.7★ (768)NoYesAug 2026
3Speed TrigonometrySpeed TrigonometryFree4.8★ (5)NoNoAug 2026
4Trigonometry(Math Drills)Trigonometry(Math Drills)FreeNoNoAug 2026
5Trigonometry Unit CircleTrigonometry Unit CircleFreeNoMay 2026
6TrigonometryTrigonometryFree1.0★ (4)NoNoMay 2026
7Trigonometry Calculator.Trigonometry Calculator.Free5.0★ (3)YesYesJul 2026
8Beautiful TrigonometryBeautiful TrigonometryFreeNoYesMay 2026

Top Picks for Trigonometry

Trigonometry for Beginners#1

Trigonometry for Beginners by Aswian Editri Sutriandi

Trigonometry lesson & exercise
Editor's Choice
📚 Education
4.7(10 ratings)
FreeAdsIn-App Purchases
Trigonometry for Beginners screenshot 1
Trigonometry for Beginners screenshot 2
Trigonometry for Beginners screenshot 3
Trigonometry for Beginners screenshot 4
Trigonometry for Beginners screenshot 5

Master trigonometry with interactive lessons and exercises designed for beginners. This app offers step-by-step explanations, fun challenges, and instant feedback to build your confidence from basic angles to word problems.

Trigonometry Help Lite#2

Trigonometry Help Lite by Armchair Engineering

Triangle Calculator + Workings
Strong Contender
📚 Education
4.7😊(768 ratings)
FreeIn-App Purchases
Trigonometry Help Lite screenshot 1
Trigonometry Help Lite screenshot 2
Trigonometry Help Lite screenshot 3
Trigonometry Help Lite screenshot 4

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.

What We Love

  • 👍 Simple and intuitive user interface
  • 🚀 Quick and fast calculations
  • 💼 Practical for professional use (construction, surveying)
  • ✅ Reliable and doesn't crash

Room to Improve

  • 💰 Unclear upgrade value proposition
  • 📊 Limited decimal place precision in free version
  • 🔍 Insufficient feature differentiation between tiers
Speed Trigonometry#3

Speed Trigonometry by Nick Petroni

Memorize the Unit Circle
Worth Considering
📚 Education
4.8(5 ratings)
Free
Speed Trigonometry screenshot 1
Speed Trigonometry screenshot 2
Speed Trigonometry screenshot 3

This app helps students quickly memorize the unit circle. It quizzes users on sine, cosine, tangent, and inverse trigonometric values for key angles. Developed by students for students, it's ideal for precalculus learners.

More Trigonometry apps to explore

4
Trigonometry(Math Drills)
Trigonometry(Math Drills)
Trigonometry(Math Drills)
by 郷 田村
Free

Master trigonometry concepts offline with this educational app. It covers essential topics like the Pythagorean theorem, right triangles, special angles, and shape measurements. Challenge yourself to improve your rank and test your knowledge.

Offline learningPythagorean theoremRight triangle trigonometry
📚 Education
(0)
free
5
Trigonometry Unit Circle
Trigonometry Unit Circle
Trigonometry Unit Circle
Your trigonometry playground
Free
📚 Education
(0)
6
Trigonometry
Trigonometry
Trigonometry
Trigonometry for beginners
Free

Learn basic trigonometric formulas through interactive theory and fun games. Earn points to progress through levels and master the concepts.

Memorize basic trigonometric formulasInteractive theory sectionFour included games
📚 Education
(4)
free
7
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
8
Beautiful Trigonometry
Beautiful Trigonometry
Beautiful Trigonometry
See how trigonometry moves
Free
📚 Education
(0)
9
Trigonometry calc
Trigonometry calc
Trigonometry calc
Calculations on right triangle
Free

Calculate side lengths and angles in right-angled triangles using Pythagorean theorem and trigonometry functions. Learn basic trigonometry concepts. An optional premium version removes ads and unlocks a general triangle calculator.

Calculate side lengthsCalculate anglesPythagorean Theorem
📚 Education
(2)
free with in-app purchases
10
Geometry & Trigonometry Solver
Geometry & Trigonometry Solver
Geometry & Trigonometry Solver
AI Answers & Calculator
Free

This app helps users solve geometry and trigonometry problems with AI-powered answers and detailed explanations. It offers a scan-to-solve feature for quick solutions and allows users to revisit past inquiries for study. Ideal for students and educators seeking to master geometric concepts.

Scan and solve geometry problems with a photoInstant and detailed explanationsHistory of solved questions
📚 Education
(11)
freemium
11
Trigonometry Practice
Trigonometry Practice
Trigonometry Practice
MCQ Practice for Trigonometry
$0.49
📚 Education
(0)
12
Trigonometry!
Trigonometry!
Trigonometry!
trigonometry
Free

Master trigonometry with this comprehensive mobile helper. It offers a textbook, visual explanations, and video lessons covering all essential formulas and theorems. Prepare for your exams with detailed content and easy-to-understand explanations.

Ordered set of basic formulas and theorems172 video lessonsEasy-to-read and understand textbook
📚 Education
(4)
free
13
MathPapa - Algebra Calculator
MathPapa - Algebra Calculator
MathPapa - Algebra Calculator
Algebra Calculator & Solver
Free

This app provides step-by-step solutions to algebra problems, helping users understand how to solve equations and inequalities. It can also graph equations, factor expressions, and evaluate mathematical expressions.

Step-by-step equation solvingLinear and quadratic equation solverLinear and quadratic inequality solver
📚 Education
(17K)
freemium
14
Ezy Trigonometry
Ezy Trigonometry
Ezy Trigonometry
by KGiants
Free

This app serves as a comprehensive trigonometry learning tool for students. It features an interactive unit circle, a table of exact trigonometric ratios, and a handbook of formulas to aid understanding.

Interactive unit circleExact trigonometric ratios tableHandbook of trigonometric formulas
📚 Education
(44)
free
15
Math & Trigonometry
Math & Trigonometry
Math & Trigonometry
Pythagoras,Derivatives,Volume
Free

This app simplifies complex math concepts with a wide range of calculation tools. It covers geometry, trigonometry, derivatives, and more, making math accessible for users worldwide. Easily perform calculations for triangles, volumes, areas, and fractions.

Rectangle triangle calculationsPythagorean theoremTrigonometry functions
📚 Education
(11)
free with in-app purchases
16
Angle Finder Calculator
Angle Finder Calculator
Angle Finder Calculator
Trigonometry made simple
Free

This geometry tool simplifies trigonometry and triangle calculations. It provides quick and accurate results for various measurements, including angles, sides, area, and advanced geometric properties. Ideal for students, professionals, and anyone needing precise calculations.

Triangle angle calculationSide length and hypotenuse calculationArea and perimeter calculation
🔧 Utilities
(1)
freemium
17
Trigonometry and functions
Trigonometry and functions
Trigonometry and functions
by Gomathy Shankaran
$3.99
📚 Education
(0)
18
Trigonometry Formulas
Trigonometry Formulas
Trigonometry Formulas
All Trigonometry Formulas
$0.99

Access a comprehensive collection of trigonometry formulas, including ratios, functions, standard angle values, and identities. This app covers basic to advanced topics like inverse circular functions and properties of triangles, serving as a handy reference for students and enthusiasts.

Trigonometric Ratios and FunctionsBasic Trigonometric FormulasStandard Angle Values
📚 Education
(2)
paid
19
Trigonometry Toolkit by CS
Trigonometry Toolkit by CS
Trigonometry Toolkit by CS
by ChatStick Company Limited
Free
📚 Education
(0)
20
Trigonometry Hong Kong
Trigonometry Hong Kong
Trigonometry Hong Kong
Trigonometry
Free

This app provides a comprehensive guide to trigonometric formulas essential for Hong Kong university entrance exams. It covers a wide range of formulas, from basic sine and cosine to more advanced compound and subsidiary angle identities.

Compound Angle FormulasSubsidiary Angle FormulasDouble Angle Formulas
📚 Education
(2)
free

FAQ about Trigonometry

What are the best trigonometry apps for iPhone?
Trigonometry for Beginners tops our trigonometry apps ranking as of August 2026, with a 4.7-star average from 10 App Store ratings, and it's free to download.
Yes — 17 of the top trigonometry apps we rank are free to download, including Trigonometry for Beginners and Trigonometry Help Lite.
Trigonometry for Beginners shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 248+ trigonometry apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Trigonometry for Beginners covers essential topics including definitions and types of angles, right triangles with the Pythagorean theorem, trigonometric ratios (sine, cosine, tangent), values for special angles, and applying trigonometry to word problems.
Yes, the app is specifically tailored for beginners, with each level carefully designed to guide learners from fundamental concepts to intermediate trigonometry skills in an engaging and enjoyable way.

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