# ElbowCalc vs Right Angle PRO

The clearest difference is iOS requirement: ElbowCalc at 13.0 against Right Angle PRO's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ElbowCalc sells 1 one-off in-app purchase and Right Angle PRO sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ElbowCalc ships an update every 5 weeks, Right Angle PRO monthly. The most recent releases landed on October 14, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | ElbowCalc | Right Angle PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (7 ratings)](https://appshunter.io/ios/app/elbowcalc-flat-pattern-maker/id6753796014/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 17 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) | [Masashi Konno](https://appshunter.io/developer/1877017984) |

## What reviewers say

### ElbowCalc

[App page](https://appshunter.io/ios/app/elbowcalc-flat-pattern-maker/id6753796014)

This professional tool assists engineers and fabricators in quickly calculating and visualizing flat patterns for elbows and reducers. It provides instant pattern graphs with cut coordinates to streamline fabrication and minimize material waste.

**Highlights:** Calculate various elbow types, Generate flat pattern graphs, Supports reducer bends, Provides cut coordinates, Fast and precise calculations, Share and save results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $19.99 | one-time |


### Right Angle PRO

[App page](https://appshunter.io/ios/app/right-angle-pro-factory-calc/id6760681480)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RightAngle PRO Monthly | $3.99 | per month |
| RightAngle PRO Yearly | $39.99 | per year |


## Frequently asked questions

### Is ElbowCalc free?

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

### Is Right Angle PRO free?

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

### Do ElbowCalc or Right Angle PRO have ads?

Neither ElbowCalc nor Right Angle PRO shows ads.

### Which is updated more often, ElbowCalc or Right Angle PRO?

ElbowCalc ships an update every 5 weeks, and Right Angle PRO monthly. Most recently, ElbowCalc was updated on October 14, 2026 and Right Angle PRO on September 28, 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.*