# Calculator Plus Pro vs QI Calculator

The clearest difference is update cadence: QI Calculator at every 3 weeks against Calculator Plus Pro's every 7 months. Calculator Plus Pro's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Calculator Plus Pro sells 1 one-off in-app purchase and QI Calculator sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Calculator Plus Pro ships an update every 7 months, QI Calculator every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calculator Plus Pro | QI Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (35 ratings)](https://appshunter.io/ios/app/calculator-plus-pro/id1255515239/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 35.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 9 MB | 129 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [政 王](https://appshunter.io/developer/962633214) | [shouhui qi](https://appshunter.io/developer/1185710456) |

## What reviewers say

### Calculator Plus Pro

[App page](https://appshunter.io/ios/app/calculator-plus-pro/id1255515239)

Enhance your iPad experience with this advanced calculator. It offers intelligent calculations and a clean, ad-free interface, making complex math tasks simpler and more efficient.

**Highlights:** Intelligent calculations, Complex math support, Ad-free experience, Optimized for iPad

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads. | $1.99 | one-time |


### QI Calculator

[App page](https://appshunter.io/ios/app/qi-calculator/id6476379861)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theme | $0.99 | one-time |
| Theme Blue Sky | $0.99 | one-time |


## Frequently asked questions

### Is Calculator Plus Pro free?

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

### Is QI Calculator free?

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

### Do Calculator Plus Pro or QI Calculator have ads?

Neither Calculator Plus Pro nor QI Calculator shows ads.

### Which is updated more often, Calculator Plus Pro or QI Calculator?

Calculator Plus Pro ships an update every 7 months, and QI Calculator every 3 weeks. Most recently, Calculator Plus Pro was updated on October 24, 2026 and QI Calculator 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.*