kaku.so
Japanese kanji dictionary + handwriting spaced repetition
kaku.so launched on June 4, 2026 with 4 votes, #3,322 of 22,647 launches that month and more than 75% of that year's launches.
What it does
kaku.so is two tools in one: a fast Japanese dictionary and a spaced-repetition study system built on top of it. Unlike Anki, nothing to build - see a word, tap once, it's in your reviews. And it trains recall, not recognition. No multiple choice, no tapping the "right" answer - you handwrite each word from memory, stroke by stroke, on a canvas. Reviews hit right before you'd forget. For dedicated learners it's brutal in the best way - it turns you into a kanji terminator.
Japanese dictionary & handwriting flashcards
Search over 10,000 kanji and 200,000 Japanese words and phrases. Every entry includes readings, meanings, stroke order, and example words. Practice handwriting with stroke validation, study with spaced repetition flashcards, and track your progress — completely free,from kaku.so
Does a similar job
all alternatives →
- AFApp for learning how to write Japanese2012 · kanjibyhand.com. · ▲55
I'm a long time lurker that recently quit my job to work on my own projects, a lot due to the inspiration from Hacker News. Now I have published my first serious project, an app for learning how to write Japanese characters. It's the app I always wanted but couldn't find when I was studying. It tries to be simple to use, you just start the quiz and go with the flow. There's no need to plan and manage your studies, and it uses spaced repetition for better retention. There's a promo page with more details up at http://www.kanjibyhand.com. It's only for Android so far. The free version includes…
Memorai 🧠2020 · chromewebstore.google.com · ▲90AI memory assistant for Anki – remember everything you read
Toku ReaderJul 2026 · apps.apple.com · ▲111Read & listen to native Japanese and Chinese, tap any word
More work this month
the category →
Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.
Work · 25d ago · loficities.com
Smooth Recorder▲257Mac screen recordings that look edited when you hit stop
Work · 19d ago · smoothrecorder.com
Work · 13d ago · readrare.com
Source: Product Hunt launch ↗
Launched alongside, June 2026
the whole month →
Fundraisly▲1,537AI fundraising agent that finds investors and books meetings
AI · Jun 2026 · fundraisly.com
Homebrew 6.0.0▲1,481Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!
Dev tools · Jun 2026 · brew.sh
Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!
Life & fun · Jun 2026 · vorpus.github.io
Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.
Life & fun · Jun 2026 · hackernewstrends.com