# Calculator HD (for iPad) vs Hinge Protractor

The clearest difference is price: Hinge Protractor at Free against Calculator HD (for iPad)'s $1.99. Hinge Protractor also leads on device support (3 vs 1). Calculator HD (for iPad)'s advantage is iOS requirement (14.0 vs 26.0). On update cadence, ads and in-app purchases there is nothing between them.

Hinge Protractor is free to download; Calculator HD (for iPad) costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Calculator HD (for iPad) | Hinge Protractor |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (26 ratings)](https://appshunter.io/ios/app/calculator-hd-for-ipad/id760018895/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 63.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | — |
| Size | 2 MB | 6 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [帅 刘](https://appshunter.io/developer/696578727) | [Maksim Tatarchenkov](https://appshunter.io/developer/6810974884) |

## What reviewers say

### Calculator HD (for iPad)

[App page](https://appshunter.io/ios/app/calculator-hd-for-ipad/id760018895)

This app offers a powerful and intuitive calculator experience optimized for larger screens. It features both basic and scientific modes, with convenient multitasking capabilities like Split Screen support and easy copy-pasting of results.

**Highlights:** Split Screen and Side Over support, Swipe to delete input errors, Copy and paste calculation results, Vertical basic mode, Horizontal scientific mode, Optimized for iOS

**Features:** macOS Compatibility

**In-app purchases:** none


### Hinge Protractor

[App page](https://appshunter.io/ios/app/hinge-protractor/id6812223231)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculator HD (for iPad) free?

Calculator HD (for iPad) costs $1.99, with no in-app purchases.

### Is Hinge Protractor free?

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

### Do Calculator HD (for iPad) or Hinge Protractor have ads?

Neither Calculator HD (for iPad) nor Hinge Protractor shows ads.

### Which is updated more often, Calculator HD (for iPad) or Hinge Protractor?

Calculator HD (for iPad) ships an update fortnightly, and Hinge Protractor fortnightly. Most recently, Calculator HD (for iPad) was updated on November 1, 2026 and Hinge Protractor on October 31, 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.*