Give better feedback in half the time.
Just talk it through.
Grade, plan, and reply by voice. Say the feedback you'd give out loud and Mutter writes it cleanly, so every student gets a real comment, not a checkmark. It runs on your Mac, so student details stay private.
macOS 14+ · Any Mac (Cloud) or Apple Silicon (Private) · system requirements
Built for how you actually work
Grading, lesson plans, and parent emails, all after hours, all one keystroke at a time.
Talk feedback, get writing
Say what you'd tell the student out loud. Mutter turns the riff into a clear, encouraging comment, far faster than typing each one.
Match the moment with Styles
A warm 'parent email' style, a concise 'rubric comment' style, applied automatically so the tone is right without rewriting.
Never lose a comment
A crashed browser or timed-out gradebook never eats your words, every comment is saved locally the instant you finish.
Student details stay private
Private mode transcribes on your Mac, student names and notes are never uploaded.
Say it, get the email
Intent mode notices what you're making, a parent email, a set of comments, a task list, and writes the finished draft to review, not just a transcript.
Where teachers use Mutter
- Feedback and grading comments
- Lesson and unit plans
- Parent emails and class newsletters
- Progress notes and recommendations
- Rubrics and assignment instructions
Your voice never leaves your Mac.
In Private mode, everything is transcribed on your Mac and never uploaded, student information stays on your device. And every word is written to a searchable history the moment you finish, before it even pastes, so you never lose a thought.
Questions teachers ask
Does it work in Google Classroom and Docs?
Yes. Mutter types wherever your cursor is, so it works in Google Classroom, Docs, your LMS, and email.
Can it match my tone for parents vs. students?
Use Styles to save a warm parent-email voice and a concise rubric-comment voice, applied automatically per app or on demand.
Is student information kept private?
In Private mode, transcription runs on your Mac and nothing is uploaded, so student details stay with you.
Will it really save me time?
Speaking a comment is far faster than typing it, and your words are saved instantly, so you never redo lost feedback.
Reclaim your weekends.
Private, on-device dictation that never loses a word. Download Mutter for macOS.