Comparison

Isosceles Triangle vs Geometry Calculator Plus

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

Head to head
About

Isosceles Triangle

Features
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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.

About

Geometry Calculator Plus

Features
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Geometry Calculator β€” the ultimate shape solver for students, engineers, architects, and anyone who works with measurements. Instantly calculate area, perimeter, volume, surface area, angles, diagonals, and dozens of other properties for 15 shapes β€” all in one beautifully designed app. Just enter what you know, and every result updates in real time. 15 Shapes. Every Property. β€’ 2D Shapes - Circle, Rectangle, Square, Triangle, Parallelogram, Trapezoid, Regular Polygon, Ellipse β€” with full outputs including circumradius, inradius, diagonals, apothem, eccentricity, and more. β€’ 3D Shapes - Cube, Cuboid, Sphere, Cylinder, Cone, Square Pyramid, Triangular Prism β€” with volume, surface area, lateral area, slant height, face areas, and space diagonals. Advanced Triangle Solver Solve any triangle from any combination of known values: β€’ SSS - three sides β€’ SAS - two sides and included angle β€’ ASA - two angles and included side β€’ AAS - two angles and non-included side β€’ SSA - automatically detects and presents both solutions in the ambiguous case Outputs include all sides, all angles, area, perimeter, circumradius, and inradius. Live Shape Visualization Every shape is drawn in real time as you type. Pan and pinch to zoom on 2D shapes. Rotate and inspect 3D shapes freely with full camera control. Labels update dynamically to reflect your exact values. Step-by-Step Solutions Toggle step-by-step mode to see the exact formulas and intermediate calculations behind every result β€” perfect for learning, checking your work, or teaching. Full Unit Support Switch between mm, cm, m, inch, and ft from the toolbar. Area and volume units update automatically. Every result is always in the unit you choose. More Features β€’ Tap any result to copy it to your clipboard instantly β€’ Formula reference sheet covering every shape and unit conversion β€’ Dark Mode fully supported β€’ VoiceOver and Dynamic Type accessibility β€’ No ads. No subscriptions. No account required. Perfect for students, teachers, engineers, architects, carpenters, designers, and anyone who needs fast, accurate geometry calculations. Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Isosceles Triangle4 screens
Geometry Calculator Plus4 screens

Verdict

The call

The clearest difference is price: Isosceles Triangle at Free against Geometry Calculator Plus's $2.99. Isosceles Triangle also leads on update cadence (every 3 weeks vs every 23 months) and iOS requirement (15.0 vs 17.0). Geometry Calculator Plus's advantage is in-app purchases (none vs 8). On ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Isosceles Triangle is free to download; Geometry Calculator Plus costs $2.99 up front. Isosceles Triangle sells 8 one-off in-app purchases. Geometry Calculator Plus asks for nothing beyond the download.

UpkeepUpdate frequency

Isosceles Triangle ships an update every 3 weeks, Geometry Calculator Plus every 23 months. The most recent releases landed on October 25, 2026 and October 12, 2026 respectively.

Scorecard4 real differences Β· 2 level
Isosceles Triangle versus Geometry Calculator Plus: the parameters behind the verdict, then further details
ParameterIsosceles TriangleGeometry Calculator Plus
PriceFree β€” better$2.99
Update frequencyEvery 3 weeks β€” betterEvery 23 months
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.0 β€” better17.0
Further details β€” not scored
Size180 MB1 MB
Age rating4+4+
DeveloperGlindemann, Sennoun, Langer GbRHeng Jia Liang

In-app purchases

8 purchases

Isosceles Triangle

One-time8
  • +30 User Tokens$0.29
  • +1 Convenience Token / 6h, max. +2$0.59
  • +150 User Tokens$0.99
Show 5 more
  • +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
None

Geometry Calculator Plus

No in-app purchases

Questions

Is Isosceles Triangle free?
Isosceles Triangle is free to download, with in-app purchases available.
Is Geometry Calculator Plus free?
Geometry Calculator Plus costs $2.99, with no in-app purchases.
Do Isosceles Triangle or Geometry Calculator Plus have ads?
Neither Isosceles Triangle nor Geometry Calculator Plus shows ads.
Which is updated more often, Isosceles Triangle or Geometry Calculator Plus?
Isosceles Triangle ships an update every 3 weeks, and Geometry Calculator Plus every 23 months. Most recently, Isosceles Triangle was updated on October 25, 2026 and Geometry Calculator Plus on October 12, 2026.

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