Triangle Calculator iPhone Apps

A triangle calculator finds the unknown angles or side lengths of triangles using trigonometry formulas.

There are many apps on the market, we have selected nine of the most prominent ones and compared their features. There are many differences, for example some only work with right (right-angled) triangles, some draw the triangle you are calculating and some allow you to work in radians as well as degrees.

See the results of our comparisons below. Hover over each row title to understand fully the feature we have compared.

Other Comparisons

Why not see our other app comparisons.

Buying a Triangle App?

Now you've seen the different features of these apps, if you're ready to buy the app for you, click on its icon.
iPhone App Name Interactive Trigonometry Interactive Trigonometry iTrigicon iTrig Math.Trig Math.Trig TriangleCalc TriangleCalc Triangulator Triangulator Trigonomics Trigonomics TrigSolv TrigSolv TriSolve TriSolve Trivice Trivice
Developer voi nguyen Vector Nine, LLC CalcApps Reinhold Meyer Moblur Very Alien Productions JustBuchanan Software JHL Enterprises Oliver Hahn
Input and output available in degrees?Degrees                  
Input and output available in radians?Radians                  
Input triangle by drawing on the screen? Draw Triangle                  
Can you calculate the dimensions of non right (right-angled) triangles? Other Triangles                  
Is the triangle redrawn to scale once it has been solved?Triangle Redrawn                  
Is the triangle's area calculated? Area                  
Is the triangle's height calculated? Height                  
Is the triangle's perimeter calculated? Perimeter                  
Does the app explain how the triangle was solved?Explanation                  
Is there a formula reference sheet? Reference Sheet                  
Can you adjust the number of decimal places of the answer? Change Output                  
Can you email the results?Email Results                  
All these apps are iPad compatible, which ones are customized for the iPad and available as an iPad app? iPad App                  
How much does the app cost? $0.99=£0.69, $1.99=£1.49 and $2.99=£1.99Price $2.99 $0.99 Free $0.99 $0.99 $1.99 $0.99 $0.99 $0.99

Triangle App Reviews

We've also done some more in-depth reviews of triangle iPhone apps, why not take a look.

Have we got it right?

If there is any feature that you think we have missed or got wrong, please let us know via our contact us form.

What's the Use of Triangles?

Find out why we need to know our trigonometry here. See where triangles fit into the real world!