Kachika – "Learning Japanese Through Life"
I'm both a Japanese learner and an indie developer. Throughout my journey of learning Japanese (currently living in Japan), I've deeply felt the challenge of memorizing words — learning them only to forget, wanting to speak but finding myself tongue-tied. Why I Made This As someone who relies heavily on visual memory, I understand the power of turning abstract concepts into visual forms. You know that feeling when you're walking around and spot something interesting — maybe a beautiful seasonal poster, a curious shop name, or even just a package design that catches your eye? Those little…
Kachika – "Learning Japanese Through Life" launched on January 4, 2025 with 5 votes and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Download KaChiKa JA | Learn Japanese by Chengdu Yichen Technology Co., Ltd on the App Store. See screenshots, ratings and reviews, user tips, and more apps like…
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS. • Fixed photos being stretched out of shape in the word list, history and study screens — they are now cropped correctly. • Removed a retired background service the app still contacted at launch. Startup and photo analysis no longer depend on it. Saving and sharing your photo results is now more reliable. If an image can’t be saved, the app gives you clearer feedback. We’ve also made under-the-hood updates to keep everyday use smooth and stable. • Faster recognition — uploads and analysis are quicker across the board. • Smoother scrolling — result pages and image loading optimized, no more stutter. • More reliable…from apps.apple.com
In the maker’s words, at launch
I'm both a Japanese learner and an indie developer. Throughout my journey of learning Japanese (currently living in Japan), I've deeply felt the challenge of memorizing words — learning them only to forget, wanting to speak but finding myself tongue-tied. Why I Made This As someone who relies heavily on visual…
Does a similar job
all alternatives →- IMI'm making an open-source platform for learning Japanese2025 · kanadojo.com · ▲288
The idea is actually quite simple. As a Japanese learner and a coder, I've always wanted there to be an open-source, 100% free for learning Japanese, similar to Monkeytype in the typing community. Unfortunately, pretty much all language learning apps are closed-sourced and paid these days, and the ones that are free have unfortunately been abandoned. But of course, just creating yet another language learning app was not enough - there has to be a unique selling point. And then I thought to myself: why not make it crazy and do what no other language learning app ever did by adding a gazillion…
Hiragana Sensei 22023 · apps.apple.com · ▲90Learn Japanese hiragana and vocabulary with cute characters
Learn Japanese contextually while browsingDec 2025 · lingoku.ai · ▲92Hi HN, Just wanted to share a tool i've been working on to help with my own study routine. It’s a browser extension called Lingoku. The idea is simple: we spend hours browsing the web in English every day. This tool replaces some of the english words with Japanese vocabulary based on your japanese level (Similar to Toucan, but with a better user experience). It’s basically an attempt to make the "i+1" method actually passive, you understand the sentence because it's mostly english, but you pick up Japanese words naturally from the context. It uses an LLM in the backend to make sure the…
More dev tools this month
the category →
Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.
Dev tools · 20h ago · github.com
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 29d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 27d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 24d ago · openbot.run
Talanoa▲346Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 22d ago · talanoa.email
Source: Show HN post ↗ · launch text quoted in part
Launched alongside, January 2025
the whole month →
Hello! I'm Byran. I spent the past ~6 months engineering a laptop from scratch. It's fully open-source on GH at: https://github.com/Hello9999901/laptop
Dev tools · 2025 · byran.ee
- TITetris in a PDF▲1,289
I realized that the PDF engines of modern desktop browsers (PDFium and PDF.js) support JavaScript with enough I/O primitives to make a basic game like Tetris. It was a bit tricky to find a union of features that work in both engines, but in the end it turns out that showing/hiding annotation "fields" works well to make monochrome pixels, and keyboard input can be achieved by typing in a text input box. All in all it's quite janky but a nice reminder of how general purpose PDF scripting can be. The linked PDF is all ASCII so you can just open it in a text editor, or have a look at…
Life & fun · 2025 · th0mas.nl
21st.dev▲1,211I originally built this app to organize and reuse interesting React + Tailwind components I came across on Twitter, inspired by the shadcn/ui approach. Later, a friend started contributing their own components, and it got me thinking—this could grow into something bigger, like an NPM for design engineers to share and use components. Would love to hear your thoughts!
Dev tools · 2025 · 21st.dev
Create lifelike, personalized AI avatars from text prompts
AI · 2025 · jogg.ai
CSS library based on Counter Strike 1.6 UI.
Life & fun · 2025 · cs16.samke.me