# QuickScan Pro vs CalcKing Pro

The clearest difference is ads: CalcKing Pro at none against QuickScan Pro's shown. QuickScan Pro's advantage is update cadence (every 3 days vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. QuickScan Pro sells 1 in-app purchase, starting at $0.99 per month and CalcKing Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

QuickScan Pro ships an update every 3 days, CalcKing Pro weekly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | QuickScan Pro | CalcKing Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Weekly |
| Size | 15 MB | 2 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Moca LLC](https://appshunter.io/developer/1442554084) | [文娟 唐](https://appshunter.io/developer/1870722016) |

## What reviewers say

### QuickScan Pro

[App page](https://appshunter.io/ios/app/quickscan-pro-qr-code-reader/id6503713080)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | per month |


### CalcKing Pro

[App page](https://appshunter.io/ios/app/calcking-pro-professional/id6758431895)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁功能 | $3.99 | one-time |


## Frequently asked questions

### Is QuickScan Pro free?

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

### Is CalcKing Pro free?

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

### Do QuickScan Pro or CalcKing Pro have ads?

QuickScan Pro shows ads; CalcKing Pro does not.

### Which is updated more often, QuickScan Pro or CalcKing Pro?

QuickScan Pro ships an update every 3 days, and CalcKing Pro weekly. Most recently, QuickScan Pro was updated on October 27, 2026 and CalcKing Pro 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.*