DR vs Erla
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DR
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DR-Annotate – Your Documents, Available Anytime and Interactive Flexible, efficient, and secure – with **DR-Annotate**, you and your authorized users have all your information at your fingertips, wherever you are. Upload your documents to your cloud and distribute them to the target groups you define. Whether training materials, product information, or sales documents – you decide what is available, when, and who can access it. Interactive Documents: * Create your own notes, set bookmarks, or mark pages with dog-ears * Use freehand drawing, highlighters, or comment boxes * All annotations are stored separately from the original document and automatically backed up online as soon as an internet connection is available HTML5 Content Offline: * Provide dynamic HTML5 content and make it available offline * Users can access these interactive contents anytime, even without an internet connection * Perfect for training, presentations, or complex documents with interactive elements Secure & Reliable: * All documents are encrypted during transfer and decrypted in the app * Device change or loss? No problem – all data can be transferred to a new device and restored Recommended: Apple Pencil or stylus for iPad Pro Digital Tests: * Supports Free Text, Single Choice, and Multiple Choice questions * Up to 5 answer options per question, including image support Try it now: Connect to our demo cloud, test all features, and see how easy DR-Annotate is to use. For information on your own cloud, licenses, or support, contact service@dr-b.eu.
Erla
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.
- Context-based learning
- AI conversation practice
- Listening and reading modes
- Voice conversation practice
- Personalized learning paths
- Offline content download
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LEARN GREEK THE NATURAL WAY Finally, a language app that teaches you to understand real Greek—not just memorize words. Erla uses context-based learning through listening, reading, and AI conversations to help you think in Greek, not translate in your head. REAL RESULTS IN WEEKS - Understand native Greek speakers within 2-3 weeks - Build lasting vocabulary through context, not flashcards - Gain confidence to have real conversations - Just 5-10 minutes a day is all you need LISTENING MODE Train your ear with authentic native speaker recordings. Hear real Greek in everyday situations and develop natural comprehension skills. Recognize speech patterns, pronunciation, and rhythm exactly as native speakers use them. READING MODE Immerse yourself in engaging short stories—from fairy tales to fascinating facts. Tap any sentence for instant translation. Explore grammar explanations on demand. Progress at your own pace with sentence-by-sentence support. AI CHAT MODE Practice real Greek conversations with your personal AI language teacher. Choose from 12 topic categories. Get personalized feedback, grammar corrections, and vocabulary building—all in context. Use the hint system when you're stuck. Track your understanding score as you improve. TALK MODE – VOICE CONVERSATIONS Ready to speak? Have real voice conversations with AI teachers who sound like native speakers. Tap the microphone and speak naturally. Get instant feedback on pronunciation and fluency. Multiple teachers with different personalities and voices available 24/7. This trains your brain to think in Greek—not constantly translate word-by-word. PERSONALIZED FOR YOU: - Choose your level: Beginner, Intermediate, or Advanced - Set daily goals from 20 to 300 points - Track streaks and watch your progress grow - Download content for offline learning - Adjust audio speed to match your needs PERFECT FOR: - Complete beginners starting their Greek journey - Intermediate learners improving comprehension - Advanced students maintaining fluency - Busy professionals with limited study time - Anyone who wants to learn naturally Download Erla now and start understanding Greek in weeks, not years. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | DR | Erla |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | Dirk Rutz Bildungsloesungen GmbH | Aleksandr Shelestov PR JustOneDev |
In-app purchases
DR
No in-app purchases
Erla
- Erla Pro Monthly7 Days trial$12.991 Month
- Erla Pro Annual7 Days trial$59.991 Year









