Comparison

Triangle Angles Calculator vs Right Angle PRO

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

Head to head
About

Triangle Angles Calculator

Easily calculate unknown sides, angles, and other parameters for various triangle types. Features interactive visualizations and works offline, making it ideal for students and professionals needing quick, accurate geometric solutions.

Highlights
  • Calculate unknown triangle parameters from 2-3 known values
  • Interactive visualization of triangle types
  • Real-time calculations with intuitive interface
  • Offline functionality
  • Supports metric and imperial units
  • Calculates sides, angles, area, perimeter, medians, and circles
Features
Read full description

Triangle Calculator - Comprehensive Geometry Tool With this intuitive application, you can easily perform calculations for various types of triangles: * Right triangle (with 90° angle) * Scalene triangle (all sides and angles different) * Isosceles triangle (two equal sides, two equal angles) * Equilateral triangle (all sides equal, all angles 60°) Key features: - Calculate unknown parameters when you know just 2-3 values - Clear, interactive visualization of each triangle type - Simple and intuitive interface with real-time calculations - No internet connection required - works completely offline - Supports both metric and imperial units Parameters you can calculate: - All sides, heights, and angles - Perimeter and area - Medians and bisectors - Coordinates of the geometric center (centroid) - Radius and coordinates of inscribed and circumscribed circles - Projections and special components in right triangles Perfect for students, teachers, engineers, architects, designers, and anyone working with geometric calculations. Save time on complex triangle calculations and always get accurate results with proper precision. This powerful yet simple tool helps you solve triangle problems in seconds. Just input the known values and get comprehensive results with all related parameters calculated automatically. No ads, no subscriptions - just a clean, functional triangle calculator at your fingertips.

About

Right Angle PRO

Read full description

The right-angle calculator built for the job site. RightAngle PRO handles the units you actually use — fractional inches (1/16, 1/32, 1/64), feet & inches, decimal inches, and millimeters — with instant diagram preview and high-precision results. Key Features Fractional Inches & Feet Support Choose your precision: 1/16", 1/32", or 1/64" — matched to your tape measure. Enter any fraction and the result automatically rounds to your selected precision. Sub-display instantly shows the converted value in your chosen second unit. Customizable Unit Combinations Mix and match unit displays freely in any combination. Real-Time Preview Every digit you type or delete is instantly reflected in the diagram. Input errors are immediately visible, making operation intuitive and efficient. Massive Calculation Range: Up to 500 km From small building components to wide-area surveying simulations — calculate angles to mountain peaks or tall structures while referencing a map. High Precision Display Side lengths displayed to 4 decimal places. Angles to 6 decimal places (4 in DMS). Tap any value for detailed precision readout. Left/Right Diagram Toggle Flip the diagram between right-rising and left-rising with one tap. PDF Export Save and print calculation results with diagrams as PDF. Easy to share on-site or by email. Light & Dark Mode Switch between Light and Dark mode to suit your environment and preference. Works Without Internet All calculations run offline. Calculation data is processed only on your device. Specifications ■ Supported Units ・ft & in (1/16 fractional) ・ft & in (1/32 fractional) ・ft & in (1/64 fractional) ・ft & in (decimal) ・Inches (1/16 fractional) ・Inches (1/32 fractional) ・Inches (1/64 fractional) ・Inches (decimal) ・Feet ・Millimeters (mm) ・Meters (m/cm/mm) ■ Maximum Input  Meter mode: up to 500 km  Other modes: up to 1,000 m ■ Calculation Precision ・Sides: rounded at 5th decimal, displayed to 4th ・Fractions: any fraction accepted — result rounds to 1/16, 1/32, or 1/64 ・Angles:  [Degrees] Diagram: 2 decimal / Precision: 6 decimal  [DMS] Diagram: whole seconds / Precision: 4 decimal (seconds) ・1 inch = 25.4 mm (exact) ・1 foot = 304.8 mm (exact) Who Is This For? Carpenters, framers, contractors, and construction professionals working with imperial measurements. Anyone who needs to calculate angles, slopes, or diagonal lengths on the job site. DIY enthusiasts and model makers who need precise angle calculations. Those who frequently convert between fractional inches, feet, and metric. Please Note Every effort has been made to ensure calculation accuracy. However, minor rounding errors may occur. Please verify all results before use in construction or professional work. As we continually improve the app, if there is any discrepancy between this description and the actual behavior, the app's behavior takes precedence. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Triangle Angles Calculator4 screens
Right Angle PRO4 screens

Verdict

The call

The clearest difference is in-app purchases: Triangle Angles Calculator at none against Right Angle PRO's 2. Triangle Angles Calculator also leads on update cadence (every 3 days vs monthly) and iOS requirement (12.0 vs 15.6). On price, ads 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

Both are free to download. Right Angle PRO sells 2 in-app purchases, starting at $3.99 per month. Triangle Angles Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Triangle Angles Calculator ships an update every 3 days, Right Angle PRO monthly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Triangle Angles Calculator versus Right Angle PRO: the parameters behind the verdict, then further details
ParameterTriangle Angles CalculatorRight Angle PRO
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 days — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size28 MB17 MB
Age rating4+4+
DeveloperDmitriy TrofimovMasashi Konno

In-app purchases

None

Triangle Angles Calculator

No in-app purchases

2 purchases

Right Angle PRO

Subscriptions2
  • RightAngle PRO Monthly$3.991 Month
  • RightAngle PRO Yearly$39.991 Year

Questions

Is Triangle Angles Calculator free?
Triangle Angles Calculator is free to download, with no in-app purchases.
Is Right Angle PRO free?
Right Angle PRO is free to download, with in-app purchases available.
Do Triangle Angles Calculator or Right Angle PRO have ads?
Neither Triangle Angles Calculator nor Right Angle PRO shows ads.
Which is updated more often, Triangle Angles Calculator or Right Angle PRO?
Triangle Angles Calculator ships an update every 3 days, and Right Angle PRO monthly. Most recently, Triangle Angles Calculator was updated on November 3, 2026 and Right Angle PRO on November 5, 2026.

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