# VSJ INTERNET SERVICES vs QI Calculator

The clearest difference is in-app purchases: VSJ INTERNET SERVICES at none against QI Calculator's 2. VSJ INTERNET SERVICES also leads on iOS requirement (12.0 vs 15.0). QI Calculator's advantage is device support. On price there is nothing between them.

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

## The numbers

| Metric | VSJ INTERNET SERVICES | QI Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Size | 72 MB | 129 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jaze Networks](https://appshunter.io/developer/1492907012) | [shouhui qi](https://appshunter.io/developer/1185710456) |

## What reviewers say

### VSJ INTERNET SERVICES

[App page](https://appshunter.io/ios/app/vsj-internet-services/id6470001289)

**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 VSJ INTERNET SERVICES free?

VSJ INTERNET SERVICES is free to download, with no in-app purchases.

### Is QI Calculator free?

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

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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.*