Script Looper vs Leafy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Script Looper
Master English listening comprehension with native YouTube content. This tool breaks down fast speech, offers AI-powered translations and context-aware definitions, and allows for adjustable playback speeds and looping.
- Loop any section of subtitles
- Adjustable playback speed
- AI context-aware translations
- Drag-and-ask for word definitions
- Sync adjustment for audio/subtitles
- Review quizzes and study tracking
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Native YouTube too fast to understand? Memorizing words and grammar won't get you there. The real answer: consistent listening to native speech you can actually understand. And the best source is YouTube - endless, authentic, and free. Script Looper makes it comprehensible. 20+ YEARS OF PROVEN METHOD, BUILT INTO ONE APP The developer knows the struggle firsthand. Even after studying in the U.S. on a government scholarship and serving at an international organization in Switzerland, fast native speech remained a wall. Starting listening practice in his mid-40s, he broke through by training only with real native audio - a method he documented in two published books on English learning (including one by a leading English-education publisher in Korea) and shared with a 50,000-member listening-study community he founded. After years of studying with existing PC browser extensions, he built Script Looper to fix everything they couldn't do: no auto-repeat, poorly segmented subtitles, no way to fix sync issues, and machine-level translations. KEY FEATURES - Loop Any Section Tap once to repeat a subtitle line until you catch every word. Drag to select part of a line - or several lines - and loop exactly what you need. - Speed Control No speech is too fast at 0.75x or 0.5x. Adjust speed even while looping. - AI Context Translation ChatGPT and Gemini generate context-aware translations in your language, displayed line by line under subtitles restructured into natural sentence units. Long videos are divided into 5-minute sections, with completed sections marked so you can pick up where you left off. - Don't Understand? Drag & Ask Words, idioms, even slang you won't find in dictionaries - drag to select anything and tap Ask. Get the meaning in context, nuance, and example sentences instantly, in your language. - Sync Adjustment If subtitles and audio don't match, fix it on the fly in 0.1s or 0.5s steps. Especially useful for auto-generated captions. - Review Quizzes & Study Tracking Everything you've asked about comes back as quizzes. Set a daily goal and track your study time by day and week. NEVER WONDER WHAT TO WATCH Sitcoms, news, talk shows, lectures, kids' content and more - open our curated channel collection (Script Looper YouTube Picks) right from the app. From Friends to TED to CNN, every channel is checked for subtitle quality. PERFECT FOR YOU IF... - Your test scores are fine, but real listening and speaking aren't - You've tried learning with shows or YouTube and gave up - You believe in acquisition through comprehensible input - not memorization When enough comprehensible native speech accumulates, one day your ears open and the words start coming out on their own. Enjoy native YouTube - and get there. Note: Script Looper is a learning tool that works on top of YouTube. Some features require a ChatGPT account (both free and paid accounts are supported). (c) 2026 Sinho Kim. Script Looper. All rights reserved.
Leafy
Learn a new language through personalized, AI-generated stories tailored to your reading level and interests. Get instant explanations for words and sentences, and build your vocabulary with a review notebook. Engage with classic novels adapted for your level and join book clubs for a social learning experience.
- AI-generated stories by level
- Tap-to-explain words and sentences
- Personalized vocabulary notebook
- Classic novels retold at your level
- Book clubs for social learning
- Reading streaks and progress tracking
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Leafy teaches you a language through stories. Pick the language, your level and what you like, and Leafy's AI writes a story just for you, chapter by chapter. Tap a word or long-press a sentence for an instant explanation in your own language, and save the ones you want to keep to your vocabulary notebook for review. Good for you if • textbooks bore you and real books are still too hard • you want to read a little every day, about things you actually like • you want to learn words in context, not from lists What you get • 12 languages: English, Japanese, Chinese, Spanish, French, German, Italian, Portuguese, Russian, Arabic, Hindi, Korean • Stories at beginner, intermediate and advanced levels, in chapters sized to your daily goal • Tap-to-explain words and long-press-to-explain sentences (interface in English, Korean, Japanese, Traditional Chinese, Spanish, Portuguese) • An AI tutor you can ask more about the story • Classic novels retold at your level • Vocabulary notebook with review mode, reading streaks and your growing forest • Book clubs to read with friends, and reminders to keep going Start for free. Leafy Premium is a monthly subscription billed to your Apple ID that renews automatically each month. Cancel anytime in iPhone Settings › Subscriptions; after cancelling you keep access until the end of the current period. Stories and explanations are generated by AI. Terms https://readleafy.com/terms · Privacy https://readleafy.com/privacy · hello@readleafy.com
Screenshots
Verdict
The clearest difference is in-app purchases: Script Looper at none against Leafy's 1. Leafy's advantage is ads (none vs shown) and update cadence (daily vs every 6 days). On price, device support and iOS requirement 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. Leafy sells 1 in-app purchase, starting at $5.99 per month. Script Looper asks for nothing beyond the download.
Script Looper ships an update every 6 days, Leafy daily. The most recent releases landed on October 31, 2026 and November 8, 2026 respectively.
| Parameter | Script Looper | Leafy |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 days | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 23 MB |
| Age rating | 17+ | 4+ |
| Developer | Sinho Kim | Dongkeon Nam |
Customer experience
Script Looper
Leafy
In-app purchases
Script Looper
No in-app purchases
Leafy
- Leafy 프리미엄$5.991 Month








