# Calculator HD (for iPad) vs QuickErrNote

The clearest difference is price: QuickErrNote at Free against Calculator HD (for iPad)'s $1.99. QuickErrNote also leads on update cadence (every 5 days vs fortnightly). Calculator HD (for iPad)'s advantage is in-app purchases (none vs 3) and iOS requirement (14.0 vs 17.0). On ads and device support there is nothing between them.

QuickErrNote is free to download; Calculator HD (for iPad) costs $1.99 up front. QuickErrNote sells 3 one-off in-app purchases. Calculator HD (for iPad) asks for nothing beyond the download.

Calculator HD (for iPad) ships an update fortnightly, QuickErrNote every 5 days. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calculator HD (for iPad) | QuickErrNote |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free | — |
| Size | 2 MB | 6 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [帅 刘](https://appshunter.io/developer/696578727) | [HappyTimes Tech Co., Ltd.](https://appshunter.io/developer/1455774641) |

## 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


### QuickErrNote

[App page](https://appshunter.io/ios/app/quickerrnote-ai-error-notebook/id6801344489)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 120 Points | $0.99 | one-time |
| 400 Points | $1.99 | one-time |
| 3500 Points | $12.99 | one-time |


## Frequently asked questions

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

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

### Is QuickErrNote free?

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

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

Neither Calculator HD (for iPad) nor QuickErrNote shows ads.

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

Calculator HD (for iPad) ships an update fortnightly, and QuickErrNote every 5 days. Most recently, Calculator HD (for iPad) was updated on October 20, 2026 and QuickErrNote on October 25, 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.*