# Right Angle

> Triangles, trapezoids, circles

Canonical page: [https://chrome-stats.com/d/id292390648](https://chrome-stats.com/d/id292390648)

## Overview

- **ID:** `id292390648`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Jerry Mayers
- **Category:** Productivity
- **Rating:** 3.90 / 5 (30 ratings)
- **Version:** 6.0.1
- **Last updated:** 2026-07-10
- **First published:** 2008-10-04
- **Size:** 2.30 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/right-angle/id292390648)
- **Website:** [https://rightangleapp.com](https://rightangleapp.com/)
- **Privacy policy:** [https://rightangleapp.com/privacy](https://rightangleapp.com/privacy)

## Description

Right Angle is a calculator built for carpenters, builders, surveyors,
machinists, and engineers — anyone who needs to solve a triangle, a
trapezoid, or a circle without reaching for a notepad and the law of
sines.

Enter any valid combination of sides and angles and Right Angle solves
the rest, including perimeter and area. The right triangle calculator
is included for free; every other shape unlocks with a one-time Pro
purchase or subscription.

SHAPES
• Right triangle (free)
• Oblique triangle
• Isosceles, right, and general trapezoids
• Full circle — enter radius, diameter, or circumference
• Segment of a circle

ANGLE FORMATS
• Decimal degrees
• Radians
• Degrees / minutes / seconds (DMS)
• Percent grade
• Pitch (x-over-12)

LENGTH FORMATS
• Decimal — the original, unitless entry. Best for metric.
• Feet, inches & fractions — type values like 2' 5 1/2".
• Inches & fractions — type values like 40 1/2".
Pick a fraction precision from 1/2 down to 1/64 inch. Inputs and outputs
both use the format you choose, and you can switch any time from Settings.

DESIGNED FOR THE JOB SITE
• A custom on-screen keyboard puts the symbols you need — feet, inches,
  fraction slash, degree, prime, double-prime — one tap away.
• Helpful errors when an input combination can't be solved, instead of
  silent failures.
• Available in English and Spanish — iOS picks the language to match
  your device.
• Full VoiceOver support across the keyboard, input fields, shape
  diagrams, and results. Animations respect the Reduce Motion setting.

EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy policy: http://rightangleapp.com/privacy.html

## Rankings

- #225,989 — Overall

## Review summary

Users praise the app for fast, easy geometry/construction calculations and reliable support, especially with fractions and angle work. Repeated concerns center on feature removals in updates (fractions/feet-inches), pricing and unlock changes, and occasional crashes. Overall it’s valued for accuracy and time-saving, but ongoing update changes and costs are the main drawbacks.

### Pros

- Easy to use, fast, and straightforward for quick calculations.
- Strong utility for construction and geometry tasks (angles, Pythagorean calculations, fractions).
- Good support and responsiveness from the developer.
- Effective fraction/decimal handling and easy switching between formats.

### Cons

- Updates have removed key features (fractions and feet/inches), disrupting workflows.
- In-app purchases and loss/restoration issues; concerns about pricing and paying for previously unlocked features.
- Stability problems after updates, including crashes.
- Mixed messaging about value for money and feature availability.

## Similar extensions and apps

- [Right Angle PRO - Factory Calc](https://chrome-stats.com/d/id6760681480)
- [Triangle Angles Calculator](https://chrome-stats.com/d/id1598378708) — 5.00 / 5
- [Triangle Calc A](https://chrome-stats.com/d/id1582200016)
- [Right Calculator](https://chrome-stats.com/d/id6768528621)
- [Angle Finder - Trig Calculator](https://chrome-stats.com/d/id6751524691) — 3.80 / 5
- [AnglePro: Builder's Calculator](https://chrome-stats.com/d/id6756786878)
- [Triangle Calculators](https://chrome-stats.com/d/id1553722101) — 5.00 / 5
- [Angles Calculator](https://chrome-stats.com/d/id368178941) — 4.80 / 5
- [Geometry Shape Calculators](https://chrome-stats.com/d/id6746794633) — 1.00 / 5
- [CalcTriangle](https://chrome-stats.com/d/id362109162)
- [Geometry Calculator - Triangle](https://chrome-stats.com/d/id6448397954) — 5.00 / 5
- [Angle Finder Calculator](https://chrome-stats.com/d/id6757908425) — 5.00 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id292390648)