Dictating a PRD by Voice From a Blank Page
The hardest part of writing a product requirements document is the empty cursor blinking at the top. Dictation flips that problem on its head: instead of composing perfect sentences, you talk through the product out loud, let the app clean it up, and edit a rough draft instead of staring at nothing.
Key takeaways
- Dictation beats the blank page because talking is faster and lower friction than typing a first draft.
- Speak the PRD in the order of its sections: problem, users, goals, scope, requirements, risks.
- On-device AI cleanup turns rambling speech into structured, punctuated text without uploading anything.
- A custom dictionary keeps product names, APIs and teammate names spelled correctly.
Why voice beats the blank page for a PRD
A PRD is a thinking document before it is a polished one. The goal of the first pass is to get every idea out of your head: the problem you are solving, who it is for, what success looks like, and what is in and out of scope. Typing forces you to format and phrase as you think, which is exactly what causes the freeze. Talking does not. When you explain the product the way you would to a teammate, the words come out in a natural order, and you can always tidy them later.
The speed difference is real. Most people speak around three to four times faster than they type, so five minutes of talking produces the raw material for a document that would take much longer to type cold. The catch is that raw speech is messy, and that is where on-device AI cleanup earns its place. It removes the "um" and "you know", fixes punctuation, and reshapes half-finished sentences into readable text. If you already talk to ChatGPT with your voice on a Mac, this is the same muscle applied to your own draft instead of a chatbot prompt.
The dictation workflow, end to end
Here is what actually happens between your microphone and a finished paragraph. The audio is captured, a local speech model transcribes it, an on-device AI pass cleans it up, and the result lands wherever your cursor is, whether that is a Google Doc, Notion, or a plain text file.
Step by step: dictate a PRD in one sitting
You do not need a perfect outline to begin. Follow the natural shape of a PRD and talk through each part in turn. The AI cleanup handles the mess, and you handle the edit.
Set up your dictation shortcut
Open a blank doc and put your cursor where the title goes. With BlaBlaType, one keyboard shortcut starts and stops dictation, so your hands stay off the mouse and your focus stays on the idea.
Talk through the problem and the user
Say who has the problem, why it hurts, and what they do today. Do not self-edit. One or two rambling paragraphs here are exactly what you want, because the cleanup pass will trim them.
Dictate goals, scope and requirements
Speak each requirement as a sentence starting with "the product should". Use a custom AI prompt to format the output as headings and bullet points so the structure appears as you talk.
Add open questions and risks out loud
End with what you are unsure about. Dictation makes this cheap, so you capture doubts instead of dropping them. These become your review agenda with the team.
Read it back and edit
Now you are editing a draft, not fighting a blank page. Reorder sections, cut repetition, and sharpen the requirements. The hard part, getting words on the page, is already done.
Speech in, structure out
The reason this works is the gap between how a first draft sounds and how it should read. Here is a realistic before and after for a single requirement.
| Stage | What it looks like |
|---|---|
| Raw speech | "so um the thing should like let people export their stuff to CSV I guess and also maybe PDF later but not now" |
| After AI cleanup | "The product should let users export their data to CSV. PDF export is out of scope for this release." |
Two things made that jump possible. First, on-device AI cleanup removed the filler and split one run-on into two clear sentences. Second, a custom dictionary kept "CSV" and "PDF" correct instead of guessing. For product and engineering PRDs the dictionary is worth building up front with your API names, service names, and teammate names. The same setup helps when you code by voice on a Mac, where exact identifiers matter even more. If your PRD feeds a tool like Cursor, it is worth checking the Cursor documentation so your requirements map cleanly to what the editor expects.
Beat the blank page on your Mac
Dictate your next PRD into any app, get AI-cleaned text, and keep every word on-device. No card needed for the trial.
Download for macOSKeeping unreleased plans private
A PRD is often the most confidential document a team writes. It can contain unshipped features, pricing ideas, and roadmap bets that would be damaging in a competitor's hands. That is the strongest argument for on-device dictation: with BlaBlaType, both the speech recognition and the AI cleanup run locally on Apple Silicon, so your audio and transcript never touch a server. You get the speed of talking without shipping your roadmap to a cloud you do not control. The same privacy logic applies when you dictate into Apple Notes or dictate emails on a Mac, where the content is just as personal. You can compare the trial and paid tiers on the pricing page before you commit.
Frequently asked questions
Can I really write a full PRD by voice?
Yes. You dictate a rough version out loud, section by section, then edit. Voice is ideal for the first draft because most people speak around three to four times faster than they type, so a blank page fills quickly.
Does dictating a PRD send my product plans to the cloud?
It depends on the tool. BlaBlaType runs speech recognition and AI cleanup entirely on your Mac, so your audio and transcript never leave the device. That matters when a PRD contains unreleased features or NDA material.
How do I dictate technical terms and product names accurately?
Add the names to a custom dictionary so the app spells your product, API and teammate names correctly every time. You can also write a custom AI prompt that formats output as PRD headings and bullet points.