Isosceles Triangle vs Triangle Calculator Pythagoras
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Isosceles Triangle
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Finish homework instantly. Prepare for exams stress-free. Free, complete step-by-step solutions. Enter your values and calculate legs, base, height, angles, perimeter, and area. HOW IT WORKS Enter your values into the correct fields and get started. You’ll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t need it. Only anonymized data is collected, for example: - which features are used - how many solutions are generated This helps us improve. No conclusions can be drawn about you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps remain fully available at all times. If you need many solutions in a short time, various purchase options are available. EXTRAS - overview of all quantities - acute and obtuse triangles - all length units - curated learning videos - feedback on incorrect inputs - manage your own solutions - app introduction CONTACT Questions and feedback via Discord or directly in the app review.
Triangle Calculator Pythagoras
Solve for missing sides and angles in right and any triangle. Visualize results with values on the drawing and view step-by-step solutions. Includes a formula library and calculation history.
- Right triangle solver
- Any triangle solver (SSS, SAS, ASA, AAS, SSA)
- Visual triangle drawing with values
- Step-by-step formula explanations
- Formula library
- Calculation history
- Degrees, minutes, seconds angle input (Pro)
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Solve any right triangle from two values – and any other triangle from three. RIGHT TRIANGLES (FREE) Enter any two of: leg a, leg b, hypotenuse c, angle α or angle β (at least one side). Triangle Calculator finds every missing side and angle, plus the area, perimeter and height to the hypotenuse, using the Pythagorean theorem and sine, cosine and tangent. Swap the legs with one tap; a check confirms α + β = 90°. ANY TRIANGLE Enter any three values – sides a, b, c and angles A, B, C – and solve SSS, SAS, ASA, AAS and the ambiguous SSA case. Every missing side and angle and the triangle type (acute, right, obtuse; equilateral, isosceles, scalene) are free. Pro adds area, perimeter, all three heights, inradius, circumradius and the second SSA solution. VALUES ON THE DRAWING The triangle is redrawn to the true proportions of your answer, with every value written right on it. Prefer a list? Switch to the Classic layout in Settings. SEE HOW IT'S SOLVED Each result comes with its formula and your numbers, for example c = √(3² + 4²) = 5. DEGREES, MINUTES, SECONDS (PRO) Type and read angles like 36°52′12″ – for plans, surveying and job-site work. CLEAR, HONEST ANSWERS The app tells you when values can't form a triangle – a hypotenuse shorter than a leg, sides that break the triangle inequality, or angles that add up to too much – instead of returning a wrong number. FORMULA LIBRARY & HISTORY A searchable library of right-triangle and any-triangle formulas with worked examples, and a history of your calculations to reopen any time (free keeps your last 5). EVERYWHERE YOU WORK iPhone, iPad and Mac, portrait or landscape, light or dark mode – in English, German, Japanese, Turkish, Spanish, French, Italian and Russian. On iPad and Mac: a sidebar, a full-height drawing and keyboard shortcuts. TRIANGLE CALCULATOR PRO • No ads • Full Any Triangle results: area, perimeter, heights, radii and both SSA solutions • Every step of every solution • Angles in degrees, minutes and seconds • Unlimited history and Copy All The right-triangle solver and every side and angle of any triangle are always free. Pro options and prices are shown in the app. Terms of Use: https://monsware.com/right-triangle-terms Privacy Policy: https://monsware.com/right-triangle-privacy
Screenshots
Verdict
The clearest difference is ads: Isosceles Triangle at none against Triangle Calculator Pythagoras's shown. Isosceles Triangle also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, 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
Both are free to download. Isosceles Triangle sells 8 one-off in-app purchases and Triangle Calculator Pythagoras sells 5 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Isosceles Triangle ships an update every 3 weeks, Triangle Calculator Pythagoras every 11 days. Both last shipped on November 3, 2026.
| Parameter | Isosceles Triangle | Triangle Calculator Pythagoras |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 11 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 180 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Glindemann, Sennoun, Langer GbR | Muhammed Samil DEMIR |
In-app purchases
Isosceles Triangle
- +30 User Tokens$0.29
- +1 Convenience Token / 6h, max. +2$0.59
- +150 User Tokens$0.99
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- +2 Convenience Tokens / 6h, max. +4$0.99
- +300 User Tokens$1.49
- +4 Convenience Tokens / 6h, max. +8$1.59
- Remove Ads$2.99
- Lifetime Access$2.99
Triangle Calculator Pythagoras
- Weekly Premium3 Days trial$1.997 Days
- Monthly Premium3 Days trial$4.991 Month
- Premium Yearly7 Days trial$24.991 Year
- Pro Lifetime$29.99
- Pro Lifetime$49.99
Questions
Is Isosceles Triangle free?
Is Triangle Calculator Pythagoras free?
Do Isosceles Triangle or Triangle Calculator Pythagoras have ads?
Which is updated more often, Isosceles Triangle or Triangle Calculator Pythagoras?
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