# Lambertus+ vs Hörakustik

The clearest difference is in-app purchases: Lambertus+ at none against Hörakustik's 10. Lambertus+ also leads on update cadence (every 5 months vs every 16 months). Hörakustik's advantage is iOS requirement (14.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Hörakustik sells 10 one-off in-app purchases. Lambertus+ asks for nothing beyond the download.

Lambertus+ ships an update every 5 months, Hörakustik every 16 months. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Lambertus+ | Hörakustik |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 16 months |
| Monetization | Free | — |
| Size | 18 MB | 188 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lambertus-Verlag GmbH](https://appshunter.io/developer/873636927) | [Median-Verlag von Killisch-Horn GmbH](https://appshunter.io/developer/1455852109) |

## What reviewers say

### Lambertus+

[App page](https://appshunter.io/ios/app/lambertus-plus/id873636924)

Access a digital library of specialized publications with advanced search and navigation. Annotate content with text, images, or audio. Organize your reading with bookmarks and a personal work desk for efficient research.

**Highlights:** Electronic table of contents, Fast and intelligent search, Work desk for full publication search, Add bookmarks, Personal annotations (text, image, audio), Attractive design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Hörakustik

[App page](https://appshunter.io/ios/app/horakustik/id1455852110)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cochlea-Implantate Extra | $13.99 | one-time |
| Kinderversorgung Extra | $13.99 | one-time |
| Hörtraining Extra | $16.99 | one-time |
| Zubehör Extra | $16.99 | one-time |
| PERZENTIL-Special | $17.99 | one-time |
| ZUBEHÖR-Special | $20.99 | one-time |
| CIC-Special | $21.99 | one-time |
| OTOPLASTIK-Special | $22.99 | one-time |
| TINNITUS-Special | $22.99 | one-time |
| Ladenbau Extra | $27.99 | one-time |


## Frequently asked questions

### Is Lambertus+ free?

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

### Is Hörakustik free?

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

### Do Lambertus+ or Hörakustik have ads?

Neither Lambertus+ nor Hörakustik shows ads.

### Which is updated more often, Lambertus+ or Hörakustik?

Lambertus+ ships an update every 5 months, and Hörakustik every 16 months. Most recently, Lambertus+ was updated on October 3, 2026 and Hörakustik on October 6, 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.*