# +Doku vs AcoustiQ

The clearest difference is in-app purchases: +Doku at none against AcoustiQ's 2. +Doku also leads on iOS requirement (10.3 vs 17.0). AcoustiQ's advantage is update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. AcoustiQ sells 2 in-app purchases, starting at $99.00 per month. +Doku asks for nothing beyond the download.

+Doku ships an update every 2 months, AcoustiQ monthly. The most recent releases landed on September 8, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | +Doku | AcoustiQ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 54 MB | 45 MB |
| Requires iOS | **10.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [X-Interchange GmbH](https://appshunter.io/developer/1438909423) | [Mueller-BBM Innovation Lab GmbH](https://appshunter.io/developer/1794145695) |

## What reviewers say

### +Doku

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

**Features:** macOS Compatibility

**In-app purchases:** none


### AcoustiQ

[App page](https://appshunter.io/ios/app/acoustiq/id6741431064)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $99.00 | per month |
| Annual Plan | $999.99 | per year |


## Frequently asked questions

### Is +Doku free?

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

### Is AcoustiQ free?

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

### Do +Doku or AcoustiQ have ads?

Neither +Doku nor AcoustiQ shows ads.

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

+Doku ships an update every 2 months, and AcoustiQ monthly. Most recently, +Doku was updated on September 8, 2026 and AcoustiQ on September 27, 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.*