苦樂參半
kǔ lè cān bànbittersweet — sweet and sad at the same time
A language notebook for real life
Exchange a phrase. Discover another way of seeing.
Keep the words that find you — on a trip, in a song, on a menu — with the moment around them. Yumi helps you understand them, and friends from other places show you what the same words mean to them.
Free during the beta. No feed, no likes — only the people you choose.
Try it with one phrase
No sign-up needed. Nothing you type here leaves this page.
Keep it with its moment
Where you met it and why it stayed with you are kept with the words. Make the note yours, then keep it.
留白liú bái
Meet Yumi
YU + MI = Yumi
Where Yumi comes from, and why she came to Earth: a 33-second film in five scenes.
- Two little pieces of nothing. Far out in space, countless little pieces drift and tumble. Two of them are YU, shaped like a U, and MI, shaped like an i.
- A perfect angle. They bump, spin and drift apart, again and again — until one day they meet at exactly the right angle. MI slides through YU’s middle, and the two become one: Yumi.
- A planet that shines. Drifting on, Yumi sees a blue planet glowing ahead, full of voices and words she has never heard. She decides to go and learn there: Earth.
- Station 33, the last stop. Every traveller docks at Station 33, a little shop in orbit, before going down. Yumi picks something to wear and a keepsake from Earth, paid for in the energy cookies she earns by learning.
- Down to Earth, to learn. Through the clouds and down to the ground. Now Yumi learns every language she meets — with you. Each word you keep, she keeps too.
Keep
Save the sentence, not just the definition.
A personal bilingual note gives a new word somewhere to belong — without likes, replies, or an audience.
August 24 Private note
I finally found the word for that feeling: .
我終於找到形容那種感覺的詞：。
Tap a highlighted word to look it up.
Exchange
A useful word can keep moving.
Share a vocabulary card with a learning friend. It arrives with its reading and meaning intact — more like passing a note than posting to a feed.
You
Mia
Nothing here yet.
Yumi
Learning feels lighter with someone nearby.
Yumi notices the words you keep, reacts as you practise, and helps you return to what is ready for review. She is a companion to your progress, not a chatbot with all the answers.
Drag to turn her · pull her eye and let go
You kept three new words today. Want to bring one back for a quick review?
你今天留下了三個新單字，要不要帶一個回來快速複習？Point it at the world
It reads what you point at.
A menu you cannot order from, or one object in a busy frame — the camera handles both, and differently.
- The line as printed, the name in your languages, and how to say it.
- Prices stay exactly as written, so you can point at the real menu.
- Each dish says how sure it is — reading it and translating it, separately.
You do not have to learn everything today.Keep one word worth finding again.
Start with one word, then let your language grow around it.