# Co Database vs Dossier X

The clearest difference is in-app purchases: Co Database at none against Dossier X's 1. Co Database also leads on device support and iOS requirement (10.0 vs 17.2). On price there is nothing between them.

Both are free to download. Dossier X sells 1 one-off in-app purchase. Co Database asks for nothing beyond the download.

## The numbers

| Metric | Co Database | Dossier X |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | — |
| Update frequency | Weekly | — |
| Size | 87 MB | 2 MB |
| Requires iOS | **10.0** | 17.2 |
| Devices | **iPhone, iPod** | — |
| Age rating | 17+ | 12+ |
| Developer | [Ka Ting Sun](https://appshunter.io/developer/984967725) | [Agilepap Productions LLC](https://appshunter.io/developer/1121081403) |

## What reviewers say

### Co Database

[App page](https://appshunter.io/ios/app/co-database/id1473404972)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dossier X

[App page](https://appshunter.io/ios/app/dossier-x/id6639582761)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Subjects | $4.99 | one-time |


## Frequently asked questions

### Is Co Database free?

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

### Is Dossier X free?

Dossier X is free to download, with in-app purchases available.

---

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