Duoler vs Reelang
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Duoler
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Learn a language from the videos you actually want to watch. Import a movie, show, lecture or any other video from the Files app. No subtitles? Duoler creates them with AI right on your iPhone, and can add a translation line to make bilingual subtitles. Tap any word or sentence to translate it, then save it to your notebook together with the video frame and audio clip. AI SUBTITLES ON YOUR IPHONE • Speech recognition in 11 languages: English, Chinese (Simplified and Traditional), Cantonese, Japanese, Korean, French, German, Spanish, Italian and Portuguese • Bilingual subtitles with translation into 20 languages • Everything runs on your device. Your videos are never uploaded TAP TO TRANSLATE • Tap a word or a whole sentence while you watch • Uses Apple's on-device translation (iOS downloads each language once) A NOTEBOOK WITH CONTEXT • Double-tap a word to save it, or save the whole sentence • Every item keeps the video frame and audio clip it came from, so you can hear it again MADE FOR LISTENING PRACTICE • Split a video into 3- or 5-minute practice sections • Move through Listen, Study and Review phases, with subtitles hidden when needed • Loop one sentence, mark difficult moments, and resume where you stopped • Review saved words and sentences with their original audio • Jump by sentence or 10 seconds, change speed, and adjust subtitle timing MORE LOCAL VIDEO FORMATS • Reference the original file to save space, or keep an independent copy in Duoler • Local playback for common formats including MKV and WebM with VP9 or AV1, when the file's tracks are supported YOUR OWN SUBTITLES WORK TOO • Import SRT, VTT or ASS/SSA files • Edit subtitle text and timing, and export SRT files PRIVATE BY DESIGN No account, no ads, no tracking. Your videos, subtitles and notebook stay on your device. FREE AND PREMIUM Free: play videos with your own subtitles, tap to translate, save unlimited words and sentences, create AI subtitles for 5 minutes a day (up to 5 minutes per video), and export the subtitles you imported. Premium: unlimited AI subtitles and export of AI-generated subtitles, billed monthly or yearly. Eligible new subscribers can try the yearly plan free. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings > [your name] > Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://duoler.vercel.app/privacy
Reelang
Learn German through authentic videos tailored to your skill level and listening speed. Interact with native content, understand vocabulary, and track your progress with smart subtitles and personalized feedback. Offers a free starting experience with an optional subscription for enhanced features.
- Learn German from native videos
- Adaptive level and speed matching
- Smart subtitles for key vocabulary
- Tap-to-translate words
- Focus mode for guided learning
- Customizable interest-based feeds (Reelang+)
- Vocabulary review and retention (Reelang+)
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Learn German from real videos you'd actually want to watch — 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 • Germany, Austria and Switzerland, each labelled, so you always know what kind of German you’re hearing. Swiss German and Austrian German are not an afterthought — each is its own feed with over a thousand clips, and Bavarian and Swabian are there too. • Real German videos, made for German speakers, not for textbooks. • A feed graded two ways: by your level, and by how fast people actually speak. • Smart Subtitles underline the words worth learning — the most common 500, 1,000 and 2,000 words in German — so you can see at a glance which word is worth a tap. • Tap any word in the captions to see what it means, right there in the sentence. • Learner insights with Reelang+: short notes on the German worth knowing in a clip. 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 — fast, casual, alive — and understanding a bit more each day. That's when it stops feeling like homework. Free to start. Scroll, tap, learn. — — — REELANG+ (OPTIONAL) Reelang is free to use. Reelang+ is an optional upgrade that adds: • Learner insights on the words and phrases worth knowing in a clip • Word translations into your own language, not only English • A feed built around your interests • 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 3 months. 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 · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Duoler sells 2 in-app purchases, starting at $2.99 per month and Reelang sells 4 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 3 months, Reelang fortnightly. The most recent releases landed on October 30, 2026 and November 13, 2026 respectively.
| Parameter | Duoler | Reelang |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.1 | 15.1 — better |
| Further details — not scored | ||
| Size | 642 MB | 54 MB |
| Age rating | 4+ | 9+ |
| Developer | 翠涓 徐 | Tojoa LLC |
In-app purchases
Duoler
- Monthly Subscription$2.991 Month
- Annual Subscription7 Days trial$24.991 Year
Reelang
- Reelang+ Monthly$9.991 Month
- Reelang+ 3 Months$21.993 Months
- Reelang+ Annual$79.991 Year
- Reelang+ Lifetime$149.99









