Duoler vs Reelang
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Duoler
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Duoler - Learn Languages by Watching Videos Tired of boring vocabulary drills? Try Duoler! Import your favorite videos, generate subtitles with AI, and learn while you watch - in English, Japanese, Chinese, Korean, and more. KEY FEATURES AI Subtitle Generation No subtitles? No problem! Duoler uses on-device Whisper AI to transcribe speech in 11 languages - Simplified Chinese, Traditional Chinese, Japanese, Korean, Cantonese, English, French, German, Spanish, Italian, and Portuguese. Automatically generate bilingual subtitles with translation into 21 target languages. All processing stays on your device, completely private. Import Any Video Add your own video files with SRT, VTT, or ASS/SSA subtitles - or let AI generate them for you. Learn from movies, shows, lectures, or any video you love. Tap to Translate While watching, tap any word in the subtitles to instantly see its translation and definition. Tap a sentence to translate the whole line. Powered by Apple Translation with 21 languages supported - all on-device, no internet required. Smart Word Library Automatically saves words you look up or collect. Double-tap any word to instantly save it. Organize by date, video, or language pair. Each word retains its video context to help you remember. Sentence Book Collect entire sentences while watching - with auto-captured screenshots and audio clips from the video. Perfect for reviewing memorable dialogues and building comprehension. Subtitle Editor View and edit subtitle text and timing directly in the app. Fine-tune AI-generated or imported subtitles to perfection. SRT Export Export AI-generated subtitles as SRT files. Share your transcriptions or use them with other tools. (Premium) Multi-Language Support Transcribe speech in 11 languages and translate into 21 languages - mix and match to create the learning combination that works for you. App interface available in 23 languages. Playback Controls Adjust playback speed, subtitle timing offset, and subtitle background opacity. Navigate between subtitle lines with ease. [WHY DUOLER] - Contextual Learning - Learn words and sentences in real contexts, remember them longer - Interest-Driven - Learn with content you actually enjoy watching - AI-Powered - Generate subtitles for any video, even without existing subtitle files - Privacy First - All AI processing, videos, and learning data stay on your device - Smart Import - Import by reference to save storage, or copy for portability Download now and start your immersive language learning journey! --- Premium Subscription: - Unlock unlimited AI transcription, SRT subtitle export, and more - Free users enjoy unlimited word collection with 5 minutes/day AI transcription - Subscription auto-renews unless cancelled at least 24 hours before the end of the current period - Manage subscriptions in iPhone Settings > Apple ID > Subscriptions Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Reelang
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Learn German from real videos you'd actually want to watch β matched to your level and listening speed. Reelang turns the clips native German speakers actually post into listening practice you can scroll. Hear German from Germany, Austria and Switzerland, from clear beginner-friendly speech to full native pace. How it works β’ Germany, Austria and Switzerland, each labelled, so you always know what kind of German youβre hearing. Swiss German and Austrian German are not an afterthought β each is its own feed with over a thousand clips, and Bavarian and Swabian are there too. β’ Real German videos, made for German speakers, not for textbooks. β’ A feed graded two ways: by your level, and by how fast people actually speak. β’ Smart Subtitles underline the words worth learning β the most common 500, 1,000 and 2,000 words in German β so you can see at a glance which word is worth a tap. β’ Tap any word in the captions to see what it means, right there in the sentence. β’ Learner insights: each clip comes with a short note on the German worth knowing in it. Focus mode, the guided way in New to German? Do not just watch a clip, work it. Focus plays it once with no text, asks how much you caught, then takes it sentence by sentence and word by word until it lands. Tap a word to keep it for review. Prefer to just watch? Flow does that instead. Start at the beginning and the feed meets you there. It opens with the easiest German it has and speeds up as you do. Some videos have the subtitles burned into the picture. A normal player cannot take those off the screen. Reelang can. Hide them and you are only listening, not reading. You're not memorising lists. You're hearing German the way it's really spoken β fast, casual, alive β and understanding a bit more each day. That's when it stops feeling like homework. Free to start. Scroll, tap, learn. β β β REELANG+ (OPTIONAL) Reelang is free to use. Reelang+ is an optional upgrade that adds: β’ Unlimited learner insights (free accounts get two a day) β’ Word translations into your own language, not only English β’ A feed built around your interests β’ Vocabulary that returns in new clips, so it sticks Reelang+ is available as an auto-renewing subscription. Available plans, local pricing and any introductory offers are shown before purchase. Terms of Use (EULA): https://reelang.com/terms Privacy Policy: https://reelang.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: Reelang at fortnightly against Duoler's every 6 weeks. Reelang also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.1). On price, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Duoler sells 2 in-app purchases, starting at $2.99 per month and Reelang sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Duoler ships an update every 6 weeks, Reelang fortnightly. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.
| Parameter | Duoler | Reelang |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Fortnightly β better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, iPod β better |
| Requires iOS | 18.1 | 15.1 β better |
| Further details β not scored | ||
| Size | 634 MB | 50 MB |
| Age rating | 4+ | 9+ |
| Developer | ηΏ ζΆ εΎ | Tojoa LLC |
In-app purchases
Duoler
- Monthly Subscription$2.991 Month
- Annual Subscription$24.991 Year
Reelang
- Reelang+ Monthly$9.991 Month
- Reelang+ 3 Months$21.993 Months
- Reelang+ Annual7 Days trial$79.991 Year









