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Kaku
Write Japanese with confidence.
Kaku fixes grammar, particles, and keigo in every desktop app, right where you type, and tells you why. When you ask, it also improves rough drafts, changes tone, or translates into natural Japanese.
Top comment
Have you ever typed a Japanese message… then spent 10 minutes wondering if you just offended someone? 😅 That was me. Learning Japanese isn’t just about grammar. It’s about navigating a culture where the same sentence can sound polite, awkward, or even rude depending on how you say it. The fear of getting it wrong stopped me from practicing more than I’d like to admit. So I built something I wish I had from day one. Kaku doesn’t just correct grammar—it helps you write naturally based on the context and level of politeness, so you can send your message with confidence while learning along the way. If you’ve ever hesitated before hitting Send, Kaku is for you. I’d love for you to try it and tell me what you think! 🇯🇵
About Kaku on Product Hunt
“Write Japanese with confidence.”
Kaku was submitted on Product Hunt and earned 0 upvotes and 4 comments, placing #160 on the daily leaderboard. Kaku fixes grammar, particles, and keigo in every desktop app, right where you type, and tells you why. When you ask, it also improves rough drafts, changes tone, or translates into natural Japanese.
On the analytics side, Kaku competes within Productivity, Writing and Languages — topics that collectively have 729.9k followers on Product Hunt. The dashboard above tracks how Kaku performed against the three products that launched closest to it on the same day.
Who hunted Kaku?
Kaku was hunted by Kakuprotech. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Kaku including community comment highlights and product details, visit the product overview.