Trancy vs Osmosis Box
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trancy
Transform your favorite YouTube videos, podcasts, and web articles into interactive language lessons. This app offers AI-powered bilingual subtitles, instant translation, and speaking practice with pronunciation feedback to make learning engaging and effective.
- AI bilingual subtitles
- Real-time translation
- Speaking practice with AI feedback
- Vocabulary saving and context
- Immersive listening drills
- Sync YouTube subscriptions
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Turn YouTube & Podcasts into Your Personal Language Classroom Tired of boring textbooks? Trancy transforms the content you already love — YouTube videos, podcasts, and web articles — into powerful language learning tools with AI-powered bilingual subtitles, real-time translation, and speaking practice. 【AI BILINGUAL SUBTITLES】 - Watch any YouTube video or podcast with side-by-side bilingual subtitles - AI-generated subtitles for videos without captions - Instant AI summaries to grasp key ideas quickly 【SMART VOCABULARY & TRANSLATION】 - Tap any word for instant translation and context - Highlight and save new words automatically - Sync your personal YouTube subscription channels for continuous learning 【SPEAKING & LISTENING PRACTICE】 - Sentence-by-sentence shadowing with speed control - AI speech evaluation to improve your pronunciation - Immersive listening drills that build real comprehension 【WHY LEARNERS CHOOSE TRANCY】 - Learn from real-world content, not scripted dialogues - Practice speaking with AI feedback anytime, anywhere - Build vocabulary naturally through context — not flashcards - Support 10+ languages - Chosen by 600,000 users Start learning smarter today — download Trancy and turn every video into a lesson. 【SUPPORT】 Questions? Visit https://www.trancy.org/chat Terms of Service: https://manual.trancy.org/en/legal/terms-of-service Privacy Policy: https://manual.trancy.org/en/legal/privacy-policy
Osmosis Box
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「Osmosis Box」 – Your All-in-One Language Learning App with Podcasts, Videos, Subtitles Transcription, Translation, and Vocabulary Mastery. Designed to create an immersive learning experience for language learners. # Core Features 1. Podcast Aggregation & Auto-Subtitle Transcription Dive into a vast library of podcasts covering tech, history, business, and more. Our "auto-subtitle transcription" instantly converts audio into text, lowering the barrier to listening practice—perfect for non-native speakers or learners building foundational skills. 2. Video Curation & Real-Time Subtitles Explore high-quality video content across education, entertainment, tech, and lifestyle. "Real-time subtitles" help you grasp every detail, turning casual viewing into an engaging language-learning session. 3. Free Translation & Vocabulary Builder Tap any word for instant translations and detailed explanations. Every translated word is saved to your "Personal Vocabulary", enhanced by "spaced repetition" technology to optimize retention. Say goodbye to cramming—learn smarter! 4. Support for Local Resource Import 「Osmosis Box」 supports importing local audio and video resources. Whether it’s meeting recordings or classroom lectures, you can transcribe text via local imports. This makes us a universal 【Audio/Video-to-Text Transcription Tool】! 5. Personalized Learning Experience More than just a tool, 「Osmosis Box」acts as your private language coach. Choose content based on your interests, and let the app recommend tailored resources and adjust your Word Bank dynamically to keep you in the optimal learning zone. # Why Choose 「Osmosis Box」? - Efficient Learning: Combine content consumption with language mastery through subtitles and real-time translations, seamlessly integrating learning into your daily life. - Rich Content Library: Access curated podcasts and videos that cater to both your intellectual curiosity and entertainment needs. - Science-Backed Memory: Spaced repetition algorithms ensure long-term vocabulary retention. - Smart Recommendations: Get content and review plans personalized to your progress and interests. # Perfect For: - Students: Prepare for TOEFL, IELTS, or GRE with authentic listening materials and vocabulary expansion. - Working Professionals: Boost language skills during commutes or breaks with bite-sized learning. - Language Learners: Master expressions and grammar through real-world contexts. - Content Enthusiasts: Explore endless podcasts and videos to broaden your knowledge. - Overseas Students, Expats, and Immigrants: Navigate cultural nuances and communicate confidently in any setting. 「Osmosis Box」 – Where Language Learning Flows Naturally. Privacy Policy: https://www.piliofpala.com/osmosis/privacy_policy/en/privacy_policy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Osmosis Box at weekly against Trancy's monthly. On price, ads, in-app purchases and device support 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. Trancy sells 4 in-app purchases, starting at $3.99 per month and Osmosis Box sells 2 in-app purchases, starting at $1.69 per month. Whichever you choose, the download price is not the number that matters.
Trancy ships an update monthly, Osmosis Box weekly. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.
| Parameter | Trancy | Osmosis Box |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (225 ratings) — better | — |
| Positive reviews | 67.2% of reviews | — |
| Number of ratings | 225 — better | — |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 25 MB | 240 MB |
| Age rating | 4+ | 4+ |
| Developer | L2D LIMITED | Guangde Pili Pala Technology Co., Ltd. |
In-app purchases
Trancy
- Trancy monthly3 Days trial$3.991 Month
- Trancy Premium + AI 月订3 Days trial$8.991 Month
- Trancy Premium - Yearly7 Days trial$29.991 Year
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- Trancy Premium + AI 年定7 Days trial$73.991 Year
Osmosis Box
- Monthly membership$1.691 Month
- Yearly membership$12.991 Year








