# Multi vs QI Calculator

The clearest difference is in-app purchases: Multi at none against QI Calculator's 2. Multi also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. QI Calculator sells 2 one-off in-app purchases. Multi asks for nothing beyond the download.

Multi ships an update monthly, QI Calculator every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Multi | QI Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (18 ratings)](https://appshunter.io/ios/app/multi-tab-calc-a-simple-app/id6451455008/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 26 MB | 129 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Naoyuki Rikiji](https://appshunter.io/developer/1465757389) | [shouhui qi](https://appshunter.io/developer/1185710456) |

## What reviewers say

### Multi

[App page](https://appshunter.io/ios/app/multi-tab-calc-a-simple-app/id6451455008)

Perform multiple calculations simultaneously in a single application. Seamlessly switch between different tabs for various operations. Designed for ease of use with a clean interface, it handles everything from simple math to totaling shopping lists.

**Highlights:** Multiple calculator tabs, Seamless tab switching, Optimized for casual use, Clean and simple design, Everyday calculation support

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

**In-app purchases:** none


### 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 Multi free?

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

### Is QI Calculator free?

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

### Do Multi or QI Calculator have ads?

Neither Multi nor QI Calculator shows ads.

### Which is updated more often, Multi or QI Calculator?

Multi ships an update monthly, and QI Calculator every 3 weeks. Most recently, Multi was updated on October 25, 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.*