Comparison

Duoler vs Kana Practice Lab

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Duoler

Features
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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/

About

Kana Practice Lab

Features
Read full description

Kana Practice Lab helps beginners build the first foundation for learning Japanese: Hiragana, Katakana, sounds, writing, simple examples, and review. Start with the kana basics, open clear Hiragana and Katakana charts, practice selected rows, and use handwriting practice to reinforce each character. Local progress and review help you return to kana that need more attention. What you can do in this first release: - Learn Hiragana and Katakana as the core path - Use kana charts to find and select practice sets - Practice writing characters by hand - Review weak kana with local practice data - Keep your learning flow simple: Learn, Practice, Me Kana Practice Lab is designed for the beginner loop behind Japanese basics: recognize the sound, learn the shape, write the kana, see short examples, and check yourself with quick practice. This release focuses on the Kana-first foundation; Kanji is preview-only, and the app does not require an account, subscription, or cloud sync.

Screenshots

Duoler4 screens
Kana Practice Lab4 screens

Verdict

The call

The clearest difference is in-app purchases: Kana Practice Lab at none against Duoler's 2. On price, ads, device support and iOS requirement 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Duoler sells 2 in-app purchases, starting at $2.99 per month. Kana Practice Lab asks for nothing beyond the download.

Scorecard1 real difference Β· 5 level
Duoler versus Kana Practice Lab: the parameters behind the verdict, then further details
ParameterDuolerKana Practice Lab
PriceFreeFree
Update frequencyEvery 6 weeksβ€”
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhoneiPhone, iPad β€” better
Requires iOS18.117.0 β€” better
Further details β€” not scored
Size634 MB46 MB
Age rating4+4+
DeveloperηΏ ζΆ“ 徐Hangzhou Youmiya Technology Co., Ltd.

In-app purchases

2 purchases

Duoler

Subscriptions2
  • Monthly Subscription$2.991 Month
  • Annual Subscription$24.991 Year
None

Kana Practice Lab

No in-app purchases

Questions

Is Duoler free?
Duoler is free to download, with in-app purchases available.
Is Kana Practice Lab free?
Kana Practice Lab is free to download, with no in-app purchases.
Do Duoler or Kana Practice Lab have ads?
Neither Duoler nor Kana Practice Lab shows ads.

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