# Right Angle vs ArcCalc

The clearest difference is rating: ArcCalc at 4.8 against Right Angle's 3.9. ArcCalc also leads on in-app purchases (none vs 9) and review sentiment (88% vs 73%). Right Angle's advantage is update cadence (every 5 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Right Angle sells 9 in-app purchases, starting at $2.99 per month. ArcCalc asks for nothing beyond the download.

ArcCalc holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: ArcCalc has 232 ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 73% of Right Angle's written reviews are positive against 88% of ArcCalc's.

Right Angle ships an update every 5 days, ArcCalc every 5 months. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Right Angle | ArcCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (30 ratings)](https://appshunter.io/ios/app/right-angle/id292390648/reviews) | **[4.8 (232 ratings)](https://appshunter.io/ios/app/arccalc/id607185155/reviews)** |
| Number of ratings | 30 | **232** |
| Positive reviews | 73.3% of reviews | **88.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 3 MB |
| Requires iOS | 26.0 | **8.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jerry Mayers](https://appshunter.io/developer/287638654) | [Roseller Sunga](https://appshunter.io/developer/607185158) |

## 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 |

**What reviewers like**

- 👍 Easy to use
- 🚀 Saves time
- 🛠️ Useful for construction/trades
- 📐 Accurate calculations
- 💡 Unique functionality (historically)

**What reviewers complain about**

- 🐛 Recent updates removed key features
- 🐛 In-app purchases required for previously free features
- 🐛 Loss of purchase after update
- 🐛 App now requires payment for features
- 🐛 Misleading free app description

**Reported bugs**

- App crashes after startup
- Update caused app to crash
- Loss of previously purchased unlocked app
- Keyboard covers input fields
- App changes mm to unspecified units

**Requested features**

- Restore fraction support
- Restore feet and inches support
- Provide both angles of a right triangle
- Allow scrolling or hiding the keyboard
- Bundling with other tools


### ArcCalc

[App page](https://appshunter.io/ios/app/arccalc/id607185155)

This app calculates various parameters of circular arcs and segments. It supports multiple input combinations and offers unit flexibility for length and angles. Calculations are automatically saved and can be shared via email.

**Highlights:** Calculates 21 cases for circular arcs, Supports length units in feet, inches, meters, centimeters, millimeters, Angle units in degrees or radians, Automatic saving of results, Error checking for out-of-range inputs, Share results via email

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Accurate calculations
- 👍 Very useful for work
- 👍 Great for curved surfaces
- 👍 Simple and quick
- 👍 Free to use

**What reviewers complain about**

- 🐛 Optimization needed for large screens
- 🐛 No metric units (initially)
- 🐛 Needs more unit choices
- 🐛 Incompatible with older iOS versions

**Reported bugs**

- Not supported by iOS 11
- No longer works with iOS 11.0

**Requested features**

- Include diagram from webpage in app
- More unit choices, especially for radius
- More calculator apps from developer in one app
- Ability to set default units


## Frequently asked questions

### Is Right Angle free?

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

### Is ArcCalc free?

ArcCalc is free to download, with no in-app purchases.

### Which has better reviews, Right Angle or ArcCalc?

ArcCalc is rated higher. Right Angle averages 3.9 out of 5 from 30 ratings, while ArcCalc averages 4.8 from 232 ratings.

### Do Right Angle or ArcCalc have ads?

Neither Right Angle nor ArcCalc shows ads.

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

Right Angle ships an update every 5 days, and ArcCalc every 5 months. Most recently, Right Angle was updated on October 2, 2026 and ArcCalc on October 3, 2026.

---

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