Use.fo - Prompt Optimizer

use.fo: AI Voice Typing - Hold to talk. Release to paste polished text anywhere.

use.fo turns voice into polished text anywhere you type. Hold Fn on Mac or Right Alt on Windows, speak naturally, and release to paste clean writing into Gmail, Slack, Notion, docs, code comments, or any desktop app. It removes filler, fixes structure and punctuation, supports rewrite modes like email, work chat, translation, social posts, and image/video prompts, and keeps your flow inside the app you were already using.

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Use.fo - Prompt Optimizer
Hey Product Hunt, I built use.fo because I kept losing momentum every time I had to turn a rough thought into usable text. Voice typing is fast, but raw transcripts are usually messy. AI writing tools are useful, but they pull you out of the app you were already using. use.fo combines both into one desktop workflow: hold a hotkey, speak naturally, release, and polished text is pasted right where your cursor already is. It works across macOS and Windows, in Gmail, Slack, Notion, docs, browsers, editors, and regular desktop apps. You can use it for quick dictation, cleaner work messages, emails, translations, social posts, and prompt-style outputs for image or video tools. The goal is simple: make speaking feel like typing, without the cleanup step. I’d love to hear where you’d use voice input most: work messages, long writing, support replies, notes, or something else?
Daniel Chang

Actually works better than I expected. The voice recognition is pretty spot on and it doesn't mess up the formatting too much. Nice job!