Follow along word-by-word with real Japanese from podcasts, streams, and songs. Tap any word to add it to your deck, then review from flashcards created for you.
Gravity started from a simple belief: language learning should follow you into real life and feel effortless enough that your only job is learning, not building lessons, drills, and word lists that rarely match what you actually see in real life.
Our mission is to help more of the world become fluent in the language around them: not just textbook fluency, but the confidence to read the menu, follow the sign, understand the message, and feel at home in a place that once felt unfamiliar.
We're a team of polyglots and lifelong language learners who have lived abroad, moved through different cultures, and watched friends, family, and classmates run into the same wall. We hope Aio will help make that wall feel a little easier to climb.
Meet the teamMost of us have stitched together our own setup: a streak app, a dictionary, a deck, an AI chat. Here is how those stack up against doing it in one place.
| Capability |  Gravity | Duolingo | Migaku | Yomitan + Anki |
|---|---|---|---|---|
| Learn from real native content: podcasts, streams, songs | Yes | No | Partial | Partial |
| Curated library, levelled N5–N1 | Yes | No | No | No |
| Word-by-word synced transcripts, tap any word to save | Yes | No | Yes | Partial |
| The original moment stays attached to the word | Yes | No | Partial | Partial |
| One tap to create flashcards | Yes | No | Partial | Partial |
| Zero setup needed | Yes | Yes | No | No |
| Capture text from the world (photos & screenshots) | Yes | No | No | Partial |
| Spaced repetition built in | Yes | Partial | Yes | Yes |
| Made for your phone | Yes | Yes | Partial | No |
Gravity is available on iOS and Android. Download the app and start turning real Japanese into review material.
The things we hear most often, in plain language. Missing one? Email hello@learngravity.com and we'll add it.
Gravity is available on the App Store for iOS and Google Play for Android.
Japanese is first, because we want the library, transcript, and review experience to feel polished before we widen support. Mandarin is next, with more languages planned after that.
Podcasts, live streams, songs, and comprehensible input, curated and JLPT-levelled from N5 to N1. The library is growing regularly.
Yes. Point Gravity at a menu, sign, manga panel, screenshot, or another piece of real text. The extracted words go into the same deck as your media saves.
Yes. Your captures and notes are yours. We do not sell them, and we design the product around keeping your learning context private.
That's Aio - Gravity's honorary fourth teammate and our mascot. He's an axolotl, named after Jupiter's moon Io. He's a polyglot, and your companion throughout our app.
