Murmur is a small Mac dictation app built by one person who got tired of typing the same Slack reply for the fourth time that morning. It costs $29 once. Your audio stays on your Mac. The AI polish step uses your own Claude API key, so you see every cent.
Verified May 2026
The good Mac dictation apps cost $96-$144 per year. Forever. The free options stop at "Apple Dictation" and don't polish anything. The middle ground (a paid app, lifetime, with AI polish) was missing.
Murmur is the missing middle. One hotkey, three gestures, lifetime pricing. Audio is transcribed locally. The AI step calls Claude through your own key, which means the bill is yours and the model choice is yours. There's no hosted backend on our side because there doesn't need to be one.
Murmur is a SwiftUI menu-bar app. It uses on-device Whisper for transcription and the Claude API for the polish step. No analytics. No telemetry. No "anonymous usage data." If you want to know what it does, the binary is signed and notarised; if you want to know what it sends, the only network call is to api.anthropic.com when you trigger AI mode or Silent mode.
That smallness is the feature. Less surface area to audit, less to break, fewer reasons for the price to creep upwards next year.
Quick mode is free forever. The $29 lifetime licence unlocks AI mode and Silent mode. There is no monthly tier, no annual tier, no enterprise tier, no "premium AI" tier, no annual renewal email. You buy it, you keep it.
The Claude API key is yours. Typical use runs around $1-3/month for Sonnet. If you want it cheaper, switch to Haiku. If you want it free for transcription, stay in Quick mode and never touch the AI step.
Bugs, feature requests, "your comparison page is wrong about VoiceInk's licence," whatever. hello@murmur.app reaches a human. Usually within a day, sometimes faster, occasionally slower if the weather's good and the path up Ben Nevis is dry.