Gravity - Language Immersion

In-app purchases
181 reviews
Content rating
PEGI 3
10k+
Downloads
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About this app

**ABOUT THIS APP**
◆ Learn Japanese from the podcasts, videos, and songs you actually want to hear — and the language you see in daily life.
◆ Gravity is a personalized Japanese learning app built around real native media. Play from a curated library of transcribed Japanese podcasts, streams, songs, and YouTube videos, follow along word-by-word with synced transcripts, and tap any word to turn it into a flashcard — the original moment it came from stays attached, so you always remember where you learned it.
◆ Prefer to learn from the world around you? Snap photos of menus, signs, manga, subtitles, or everyday Japanese text and pull vocabulary straight from it too.
◆ Whether you're preparing for a trip, studying abroad, living in Japan, or simply immersing yourself through anime, music, and media, Gravity helps you build confidence through real context instead of generic textbook lessons.

**WHY CHOOSE GRAVITY?**
→ Learn from real native media: a curated library of Japanese podcasts, streams, songs, and videos, levelled N5–N1 so you're always understanding just enough.
→ Word-synced transcripts: follow along word-by-word as audio plays — tap anything you don't know to save it instantly.
→ One-tap flashcards: turn any word from media, photos, or screenshots into study material in a single tap — zero setup.
→ Context that sticks: every saved word keeps the original clip, sentence, or image it came from, so you review it in the moment it appeared.
→ Personalized learning: your lessons are built around the Japanese you actually listen to, watch, and encounter every day.
→ Smart review system: spaced repetition surfaces the most useful and frequently encountered words first.
→ Capture the real world: pull vocabulary from menus, signs, manga, subtitles, conversations, and screenshots whenever you're offline or out and about.
→ Daily learning plans: manageable study sessions tailored to your progress and goals.

**WHAT YOU'LL LEARN**
◆ Real spoken Japanese from podcasts, streams, songs, and videos — the way natives actually talk.
◆ Listening and reading practice through word-synced transcripts, signs, menus, subtitles, and media.
◆ Real-world vocabulary and phrases used in everyday situations.
◆ Common expressions for travel, restaurants, shopping, school, and conversations.
◆ Personalized vocabulary based on your interests, hobbies, and environment.
◆ Japanese you'll actually encounter — not just textbook examples.

**WHO IT'S FOR**
→ Anime, manga, J-pop, and podcast fans who want to learn from what they already love.
→ Travelers preparing for Japan trips.
→ International students and exchange students.
→ Immigrants and working-holiday travelers.
→ Busy learners who want low-friction daily immersion.
→ Anyone who wants to stay consistent without overwhelming flashcard decks.

**HOW IT WORKS**
1. Play something from the library — a podcast, song, stream, or video — and follow along with the word-synced transcript.
2. Tap any word you want to learn (or snap a photo / upload a screenshot of Japanese text).
3. Gravity builds personalized flashcards and learning plans automatically, with the original context attached.
4. Review daily and track your progress over time.

The more Japanese you listen to, watch, and encounter, the smarter your learning experience becomes.

**Start learning Japanese naturally**

Gravity helps you learn through the media and the world around you — making Japanese feel more practical, personal, and connected to your daily life.

**GRAVITY IS IN EARLY ACCESS.**
Any bugs, issues, or feedback can be directed to support@learngravity.com.
Learn Japanese/Mandarin Chinese through the videos you already love!
Updated on
5 Nov 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Financial info, App activity and Device or other IDs
  • This app may collect these data types
    Personal info, Financial info and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

176 reviews
Kalah Med
17 September 2026
This app is honestly amazing. I’ve tried similar ones, but this one stands out because it’s so simple to use. The decks are clean and easy to manage instead of being messy or confusing. I love how it tests you on saved words right after each video, and the AI explanations actually make sense compared to other apps. Plus, being able to test it out before buying was a huge plus!
1 person found this review helpful
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Heimdall Space Inc.
19 September 2026
Thank you for the kind words! It truly motivates us to make the app even better to create the best possible learning experience. Appreciate the support!
Kieran Dyson
7 November 2026
Gravity definitely has potential, but where it is right now, it is not worth paying for. If you have a PC/laptop and want to immerse, you can set yourself up with all of this app's functionality for $0. Mistakes in subtitles are shockingly common for a paid service. words like 違うbeing parsed as 血が is just one example I noticed. Sentences are often split awkwardly between subtitle cards. I would personally rather the cards be split by who is talking. Its not a huge issue though.
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Heimdall Space Inc.
10 November 2026
Thank you for the detailed review! We're constantly improving our Japanese transcripts and regularly releasing updated ones, so we hope you'll notice better accuracy on your next visit! We've also explored splitting subtitles by speaker, but it's particularly challenging to get right. We appreciate your feedback! :)
Heather Liu
2 November 2026
I love the idea of the app and I found the videos interesting and they have good amount for earlier levels (HSK 2/3). but I seriously doubt the creators who made some of these videos are getting paid for their work and I'd rather support them directly through YouTube. you can also do a similar thing for free on a laptop using language reactor if the video has Chinese subtitles to get pinyin, click words for definitions and save them to flashcards. I like being able to do it on my phone though!
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Heimdall Space Inc.
31 October 2026
Thank you for the thoughtful feedback! Videos on Gravity play through YouTube's embedded player, still allowing creators to benefit from views and exposure. Our goal is to make real-world language learning more accessible on mobile. And as Gravity grows, we hope to build even more sustainable ways for both creators and the platform to thrive! :)

What's new

New in 3.1:
• Guided first lesson with Aio for new learners
• Earn coins from daily study and buy Aio hats
• Review words from a video or Moment right away, even offline
• Your library and decks work offline and sync later
• Keep practicing after daily study, and flashcard sentence audio is back
• Simplified/Traditional and pinyin settings now stick everywhere
• Smoother Moments playback
• Lots of Android and large-text fixes