# OPOS.vn vs Bách Khoa Apps

The clearest difference is device support: Bách Khoa Apps at 2 against OPOS.vn's —. OPOS.vn's advantage is iOS requirement (11.0 vs 16.6). 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 | OPOS.vn | Bách Khoa Apps |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 6 days |
| Size | 52 MB | 151 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | — | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [KAS TECHNOLOGY CORPORATION](https://appshunter.io/developer/1240312897) | [BACH KHOA HA NOI CONSULTING AND TECHNOLOGY DEVELOPMENT COMPANY LIMITED](https://appshunter.io/developer/1645048410) |

## What reviewers say

### OPOS.vn

[App page](https://appshunter.io/ios/app/oposvn/id6446276958)

**In-app purchases:** none


### Bách Khoa Apps

[App page](https://appshunter.io/ios/app/bach-khoa-apps/id6739036642)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OPOS.vn free?

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

### Is Bách Khoa Apps free?

Bách Khoa Apps is free to download, with no in-app purchases.

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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.*