Best Triangle Calculator Apps

250+ iOS apps curated and reviewed

4.4 avg rating
17 free apps
Updated October 2026

From beginner-friendly picks to power-user tools, our triangle calculator list covers 250+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.

Compare top Triangle Calculator Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Figure calculator ShapeInfoFigure calculator ShapeInfoFree4.7★ (147)YesNoNov 2026
2Trig SolverTrig SolverFree4.3★ (80)NoNoOct 2026
3Triangle Calculator: SolverTriangle Calculator: SolverFree4.0★ (4)NoYesOct 2026
4Triangle Angles CalculatorTriangle Angles CalculatorFree5.0★ (2)NoNoOct 2026
5Triangle & Angle calculatorTriangle & Angle calculatorFree4.1★ (216)NoYesNov 2026
6Trigonometry Calculator.Trigonometry Calculator.Free4.3★ (19)YesYesOct 2026
7Triangle Calculator PythagorasTriangle Calculator PythagorasFree4.0★ (1)YesYesOct 2026
8JobRig Construction CalculatorJobRig Construction CalculatorFree—NoNoOct 2026

Top Picks for Triangle Calculator

Figure calculator ShapeInfo#1

Figure calculator ShapeInfo by Noriyasu Kutsuzawa

Geometric shape calculator
Editor's Choice
📊 Productivity
4.7(147 ratings)
FreeAds
Figure calculator ShapeInfo screenshot 1
Figure calculator ShapeInfo screenshot 2
Figure calculator ShapeInfo screenshot 3
Figure calculator ShapeInfo screenshot 4
Figure calculator ShapeInfo screenshot 5
Figure calculator ShapeInfo screenshot 6

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.

4.3😐(80 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
  • 🛠️ Great for job site/machinists
  • 💯 Saves time
  • 🌟 Life saver for grades

Room to Improve

  • 🐛 Inaccurate results reported
  • 💸 Ads are present and distracting
  • 📉 Rounding issues
  • 🚫 No option to remove ads (for some)
  • ⚠️ App stopped working after updates
  • 😵‍💫 Input issues (dark mode, hidden buttons)
  • 🤔 Limited decimal places
  • ❌ Not for serious/precise engineering
Triangle Calculator: Solver#3

Triangle Calculator: Solver by Vaghani Keyur

Angles, Sides & Trigonometry
Worth Considering
🔧 Utilities
4.0(4 ratings)
FreeIn-App Purchases
Triangle Calculator: Solver screenshot 1
Triangle Calculator: Solver screenshot 2
Triangle Calculator: Solver screenshot 3
Triangle Calculator: Solver screenshot 4
Triangle Calculator: Solver screenshot 5
Triangle Calculator: Solver screenshot 6

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.

More Triangle Calculator apps to explore

FAQ about Triangle Calculator

What are the best triangle calculator apps for iPhone?
Figure calculator ShapeInfo tops our triangle calculator apps ranking as of October 2026, with a 4.7-star average from 147 App Store ratings, and it's free to download.
Yes — 17 of the top triangle calculator apps we rank are free to download, including Figure calculator ShapeInfo and Trig Solver.
Figure calculator ShapeInfo shows ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 250+ triangle calculator apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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