# DR vs Erla

The clearest difference is in-app purchases: DR at none against Erla's 2. Erla's advantage is update cadence (every 9 days vs every 2 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Erla sells 2 in-app purchases, starting at $12.99 per month. DR asks for nothing beyond the download.

DR ships an update every 2 months, Erla every 9 days. Both last shipped on November 1, 2026.

## The numbers

| Metric | DR | Erla |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 12 MB | 71 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Rutz Bildungsloesungen GmbH](https://appshunter.io/developer/708314115) | [Aleksandr Shelestov PR JustOneDev](https://appshunter.io/developer/506634828) |

## What reviewers say

### DR

[App page](https://appshunter.io/ios/app/dr-annotate/id868029762)

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

**In-app purchases:** none


### Erla

[App page](https://appshunter.io/ios/app/erla-learn-greek-with-ai/id6755628722)

Learn Greek through natural, context-based immersion. Practice listening, reading, and speaking with an AI tutor. Achieve conversational fluency in weeks with just minutes of daily practice.

**Highlights:** Context-based learning, AI conversation practice, Listening and reading modes, Voice conversation practice, Personalized learning paths, Offline content download

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Erla Pro Monthly | $12.99 | per month |
| Erla Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is DR free?

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

### Is Erla free?

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

### Do DR or Erla have ads?

Neither DR nor Erla shows ads.

### Which is updated more often, DR or Erla?

DR ships an update every 2 months, and Erla every 9 days. Most recently, DR was updated on November 1, 2026 and Erla on November 1, 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.*