Comparison

Isosceles Triangle PRO vs Extra Math

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Isosceles Triangle PRO

Calculate all properties of an isosceles triangle, whether acute or obtuse. Input known values to see formulas and results. Supports decimals, fractions, and step-by-step solutions with history saving and sharing.

Highlights
  • Calculate all isosceles triangle quantities
  • Display formulas for calculations
  • Supports acute and obtuse triangles
  • Handles decimals and fractions
  • Step-by-step solution display
  • History function for saved calculations
  • Adjustable decimal places
Features
Read full description

The best app to calculate all quantities of an isosceles triangle. You must enter some quantities like an angle and a length. The algorithm searches the formulas of the missing quantities, shows them and calculates the results. The calculation of an isosceles triangle depends on one certain characteristic. Either it is obtuse angled or acute angled. Both is handled in this app. You just have to touch the button to switch the appearance of your isosceles triangle. The length of the decimal place can be changed. The algorithm shows when rounding or wrong values lead to an opposition. Decimals and fractions are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Content ] - all important quantities for the isosceles triangle - formulas for all important quantities of an isosceles triangle - infographic to illustrate the topic - search bar to find the desired quantity - history function to save the input - detailed solution - positive numbers, decimals and fractions are supported - changeable decimal place - changeable appearance of your triangle (obtuse angled - acute angled) - no ads! [ Usage ] - there are several fields for entering the values ​​using a special keyboard - if values are missing, all fields are highlighted in orange - if values are conflicting or wrong (e.g. negative lengths), one affected field is highlighted in red - every value must be positive - if a value is no number, it is highlighted in red - the entries in the history can be deleted or sorted manually - if you select an entry in the history, it will be loaded automatically for the calculation - the entire history can be deleted by pressing a button - solutions can be shared [ Acute angled ] - gamma must be less than 90° - alpha must be greater than 45° and less than 90° [ Obtuse angled ] - gamma must be greater than or equal 90° and less than 180° - alpha must be less than or equal 45°

About

Extra Math

Features
Read full description

Extra Math: Create unlimited, customized math worksheets from a single photo. • Snap a picture of any math worksheet with your iPhone or iPad • AI automatically identifies and extracts problems • Customize questions with easy editing tools • Generate similar problems with AI assistance • Print worksheets directly from your device • Share worksheets easily with others Perfect for teachers, parents, and students who need additional math practice. Extra Math saves time and effort in creating tailored worksheets, ensuring students get the practice they need to excel in mathematics. Ideal for arithmetic problems for students in grades second grade, third grade, fourth grade, and fifth grade (2-5), with more advanced math support coming soon. Simplify your math practice routine with Extra Math!

Screenshots

Isosceles Triangle PRO4 screens
Extra Math4 screens

Verdict

The call

The clearest difference is update cadence: Extra Math at every 3 days against Isosceles Triangle PRO's monthly. Extra Math also leads on price ($0.99 vs $2.99). Isosceles Triangle PRO's advantage is iOS requirement (15.0 vs 17.5). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Isosceles Triangle PRO costs $2.99 and Extra Math $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Isosceles Triangle PRO ships an update monthly, Extra Math every 3 days. The most recent releases landed on September 17, 2026 and January 1, 2026 respectively.

Scorecard3 real differences · 6 level
Isosceles Triangle PRO versus Extra Math: the parameters behind the verdict, then further details
ParameterIsosceles Triangle PROExtra Math
Price$2.99$0.99 — better
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyMonthlyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.5
Further details — not scored
Size179 MB13 MB
Age rating4+4+
DeveloperGlindemann, Sennoun, Langer GbRjsdf, LLC

In-app purchases

None

Isosceles Triangle PRO

No in-app purchases

None

Extra Math

No in-app purchases

Questions

Is Isosceles Triangle PRO free?
Isosceles Triangle PRO costs $2.99, with no in-app purchases.
Is Extra Math free?
Extra Math costs $0.99, with no in-app purchases.
Do Isosceles Triangle PRO or Extra Math have ads?
Neither Isosceles Triangle PRO nor Extra Math shows ads.
Which is updated more often, Isosceles Triangle PRO or Extra Math?
Isosceles Triangle PRO ships an update monthly, and Extra Math every 3 days. Most recently, Isosceles Triangle PRO was updated on September 17, 2026 and Extra Math on January 1, 2026.

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