# Right Angle vs CalcTriangle

The clearest difference is price: Right Angle at Free against CalcTriangle's $0.99. Right Angle also leads on update cadence (every 5 days vs every 8 months) and review sentiment (73% vs 50%). CalcTriangle's advantage is in-app purchases (none vs 9) and chart position (#194 vs unranked). On ads and device support there is nothing between them.

Right Angle is free to download; CalcTriangle costs $0.99 up front. Right Angle sells 9 in-app purchases, starting at $2.99 per month. CalcTriangle asks for nothing beyond the download.

Right Angle ships an update every 5 days, CalcTriangle every 8 months. The most recent releases landed on July 17, 2026 and July 25, 2026 respectively.

## The numbers

| Metric | Right Angle | CalcTriangle |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.9 (30 ratings)](https://appshunter.io/ios/app/right-angle/id292390648/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | **73.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 8 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#194** |
| Size | 2 MB | 1 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jerry Mayers](https://appshunter.io/developer/287638654) | [Philip Sacchitella](https://appshunter.io/developer/362109165) |

## What reviewers say

### Right Angle

[App page](https://appshunter.io/ios/app/right-angle/id292390648)

This app calculates triangles and segments of circles. It supports various angle input formats and offers solutions for oblique triangles and circle segments with optional add-ons. A right triangle calculator is included for free.

**Highlights:** Triangle solver, Circle segment calculator, Multiple angle units (degrees, radians, DMS, grade, x/12), Oblique triangle solver (add-on), Circle segment solver (add-on), Free right triangle calculator

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Renews Monthly | $2.99 | per month |
| Renews Yearly | $14.99 | per year |
| Small Tip | $2.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Segments Calculator | $5.99 | one-time |
| Oblique Triangle Calculator | $5.99 | one-time |
| Segment & Oblique Triangle | $6.99 | one-time |
| Large Tip | $9.99 | one-time |
| Huge Tip | $29.99 | one-time |


### CalcTriangle

[App page](https://appshunter.io/ios/app/calctriangle/id362109162)

**Currently charting:** #194 Top Paid · Productivity (US App Store)

This app calculates all unknown sides, angles, area, and perimeter of a right triangle. It supports both imperial and metric units, with precise input options for fractions and measurements.

**Highlights:** Calculates sides, angles, area, and perimeter, Supports imperial (feet, inches, fractions) and metric units, Precise fraction input, Save and load triangle data, Simple interface for job sites

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Right Angle free?

Right Angle is free to download, with in-app purchases available.

### Is CalcTriangle free?

CalcTriangle costs $0.99, with no in-app purchases.

### Do Right Angle or CalcTriangle have ads?

Neither Right Angle nor CalcTriangle shows ads.

### Which is updated more often, Right Angle or CalcTriangle?

Right Angle ships an update every 5 days, and CalcTriangle every 8 months. Most recently, Right Angle was updated on July 17, 2026 and CalcTriangle on July 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*