# Right Angle vs Desired Resistance Calculator

The clearest difference is price: Right Angle at Free against Desired Resistance Calculator's $1.99. Right Angle also leads on update cadence (every 11 days vs every 10 months). Desired Resistance Calculator's advantage is in-app purchases (none vs 9) and review sentiment (100% vs 73%). On ads there is nothing between them.

Right Angle is free to download; Desired Resistance Calculator costs $1.99 up front. Right Angle sells 9 in-app purchases, starting at $2.99 per month. Desired Resistance Calculator asks for nothing beyond the download.

Right Angle ships an update every 11 days, Desired Resistance Calculator every 10 months. The most recent releases landed on November 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Right Angle | Desired Resistance Calculator |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[3.9 (30 ratings)](https://appshunter.io/ios/app/right-angle/id292390648/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 73.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 10 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 8 MB | 1 MB |
| Requires iOS | 26.0 | **14.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jerry Mayers](https://appshunter.io/developer/287638654) | [Ekrem Nurdag](https://appshunter.io/developer/1606169736) |

## What reviewers say

### Right Angle

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

This app provides precise calculations for geometric shapes like triangles, trapezoids, and circles. It offers multiple angle and length formats, a custom keyboard for job site use, and helpful error messages. Designed for professionals in construction, engineering, and trades.

**Highlights:** Calculates triangles, trapezoids, and circles, Supports decimal degrees, radians, DMS, percent grade, and pitch, Handles decimal, feet/inches/fractions length formats, Custom on-screen keyboard with job site symbols, VoiceOver support for accessibility, Available in English and Spanish

**Features:** macOS Compatibility, Family Sharing, iPhone Duo support

**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


### Desired Resistance Calculator

[App page](https://appshunter.io/ios/app/desired-resistance-calculator/id1606169404)

This tool helps you find the closest standard resistor value by combining two standard resistors in series or parallel. It supports E12 and E24 resistor series for precise calculations.

**Highlights:** Calculates series resistor combinations, Calculates parallel resistor combinations, Supports E12 resistor series, Supports E24 resistor series, Finds closest approximation to desired value

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Right Angle free?

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

### Is Desired Resistance Calculator free?

Desired Resistance Calculator costs $1.99, with no in-app purchases.

### Do Right Angle or Desired Resistance Calculator have ads?

Neither Right Angle nor Desired Resistance Calculator shows ads.

### Which is updated more often, Right Angle or Desired Resistance Calculator?

Right Angle ships an update every 11 days, and Desired Resistance Calculator every 10 months. Most recently, Right Angle was updated on November 1, 2026 and Desired Resistance Calculator on October 13, 2026.

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