# OFI vs Raabe Klett

The clearest difference is review sentiment: Raabe Klett at 10% against OFI's 0%. OFI's advantage is iOS requirement (8.1 vs 14.0). 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.

OFI ships an update every 4 months, Raabe Klett every 2 months. The most recent releases landed on October 3, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OFI | Raabe Klett |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **10.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 180 MB | 29 MB |
| Requires iOS | **8.1** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stiefel Magyarorszag Terkepkiado Vizualtechnikai es Taneszkozkereskedelmi KFT](https://appshunter.io/developer/1031250479) | [Raabe Klett Kft.](https://appshunter.io/developer/1075799207) |

## What reviewers say

### OFI

[App page](https://appshunter.io/ios/app/ofi/id1031250480)

This app offers a new kind of digital school atlas, presenting information through 3D models, augmented reality, and interactive content. It aims to enhance learning with modern technology while reducing paper usage and keeping content up-to-date.

**Highlights:** 3D digital atlas content, Augmented reality learning, Interactive educational features, Reduces paper usage, Regularly updated content

**Features:** macOS Compatibility

**In-app purchases:** none


### Raabe Klett

[App page](https://appshunter.io/ios/app/raabe-klett/id1280982685)

This app offers a renewed learning experience for language studies, exam preparation, and competency testing. It provides easy access to digital learning materials, including audio and video content, and allows users to track their progress and test their knowledge with practice exercises.

**Highlights:** Renewed user-friendly design, Downloadable audio and video materials, Extensive book catalog, Practice tests for knowledge assessment, User account for progress syncing, Offline access to downloaded content

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OFI free?

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

### Is Raabe Klett free?

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

### Do OFI or Raabe Klett have ads?

Neither OFI nor Raabe Klett shows ads.

### Which is updated more often, OFI or Raabe Klett?

OFI ships an update every 4 months, and Raabe Klett every 2 months. Most recently, OFI was updated on October 3, 2026 and Raabe Klett on October 16, 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.*