Henji

What it does

Henji turns your half-formed thoughts into a finished reply that sounds like you — not a generic AI. Most AI tools think for you and hand back text in their voice, so you rewrite it anyway. Henji is the opposite: you keep the thinking, Henji just handles the writing. Select a message, drop a few keywords, and get a reply in your tone — ready to send. The more you use it, the more it learns your phrasing, your rhythm, your emoji habits. Starts with Slack. Built for anyone drowning in replies.

殴り書きやキーワードから、あなたの文体で返信文をつくる macOS 用アプリ。使うほど、あなたの書き方になじむ。

The more you use it, the more it sounds like you. Chats and email — replies get easier every day. hey! quick one about the deck — any chance it can land today? no worries if it's tight, just let me know 🙏 Internal threads keep their pace — warm, but only the essentials. Turning down "Can you get this doc to me by tomorrow?" — politely, while negotiating the deadline. I'm sorry for the trouble. I'll confirm the cause and report back on the status by end of day. Heads up, they flagged that bug's still not fixed. I'll dig into the cause and get it sorted today. no bc the bug's still not fixed?? i'm so done 😭💔 lemme jump on it rn, sorted by today, hang tight bestie 🫶💖 Over 2 million Mac…from henji.ai

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