# RfnBMS vs QSO

The clearest difference is device support: RfnBMS at 2 against QSO's —. QSO's advantage is iOS requirement (9.0 vs 13.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | RfnBMS | QSO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 24 months | — |
| Size | 2 MB | 19 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [亚妹 李](https://appshunter.io/developer/1621258401) | [深圳市集智电子有限公司](https://appshunter.io/developer/1655111205) |

## What reviewers say

### RfnBMS

[App page](https://appshunter.io/ios/app/rfnbms/id1621684342)

**Features:** macOS Compatibility

**In-app purchases:** none


### QSO

[App page](https://appshunter.io/ios/app/qso/id6474469549)

**In-app purchases:** none


## Frequently asked questions

### Is RfnBMS free?

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

### Is QSO free?

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*