# baupen vs +Doku

The clearest difference is iOS requirement: +Doku at 10.3 against baupen's 15.0. On price, update cadence, ads 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.

baupen ships an update every 6 weeks, +Doku every 2 months. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | baupen | +Doku |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Size | 7 MB | 54 MB |
| Requires iOS | 15.0 | **10.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bau-Apps GmbH](https://appshunter.io/developer/1577979785) | [X-Interchange GmbH](https://appshunter.io/developer/1438909423) |

## What reviewers say

### baupen

[App page](https://appshunter.io/ios/app/baupen/id1414077195)

**Features:** macOS Compatibility

**In-app purchases:** none


### +Doku

[App page](https://appshunter.io/ios/app/plus-doku/id1438911531)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is baupen free?

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

### Is +Doku free?

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

### Do baupen or +Doku have ads?

Neither baupen nor +Doku shows ads.

### Which is updated more often, baupen or +Doku?

baupen ships an update every 6 weeks, and +Doku every 2 months. Most recently, baupen was updated on September 18, 2026 and +Doku on September 8, 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.*