Murmur AI Voice Notes and Meeting Notes App

Overview

Murmur is a voice notes and meeting notes app for professionals, students and founders. Tap once to record; Murmur transcribes the recording, finds who spoke, writes a summary under the headings of the template you chose and lists the action items with owners and due dates. Ask then answers questions across every note and points to the moment each thing was said.

It is a complete Expo SDK 57 / React Native app on the FluxNative kernel: native tabs with Liquid Glass chrome on iOS, Material on Android, a browser preview, light and dark.

Key features

• Recorder: live level, large timer, pause, bookmarks and typed notes on a timeline; a new file every ten minutes so each part fits one transcription call.

• Processing in three real stages (transcribe, find speakers, write the summary), saved as each lands and resumed after a restart; no percentages.

• The note as a document: summary headings and points, your marks, topics that ask across notes; Rewrite with another template, edit by hand, Undo.

• Transcript with speaker names in colour (rename a voice once for the whole note) and timestamps that play the recording from there.

• Action items to check, add and remove, each with its owner, due day and where it was said.

• Templates: Meeting, Lecture, Idea, 1:1 and Interview, each with editable headings and guidance, plus your own.

• Notes list with search across titles, summaries and transcripts, folders, swipe to delete with Undo.

• Import an audio file in the web build, with its waveform measured from the audio.

Screens

• Welcome, onboarding (what you record, default template) and the Pro page.

• Notes, Record, Ask and You tabs.

• Recorder, processing, note (Summary, Transcript, Actions), note editing, import.

• Conversation with your notes, summary templates and template editing.

• You: minutes left this month, a 14-day recording chart, language, keep recordings, Delete my data; Terms, Privacy and About in the app.

AI and backend

With the Supabase values blank the app runs in sample mode: 14 notes from two weeks of a product team, an evening economics course and voice ideas; new recordings get designed sample results and each screen says so in one quiet line. The browser preview's recorder is a labelled stand-in that never opens the microphone; a phone build records with expo-audio.

Connected, notes, transcripts, action items and folders live in Supabase tables under row-level security, kept recordings in a private storage bucket, and the AI runs in one Supabase Edge Function (ai) calling Google Gemini with your key. Each install signs in anonymously; there are no visible accounts.

• transcribe-10 to transcribe-60: one recording part to segments with speakers and times, 1 unit per started 10 minutes.

• summarize: transcript, template headings and guidance and your marks to a title, sections, action items and topics, 2 units.

• ask-notes: a question and the matching lines of your notes to an answer with citations, 1 unit.

• Free plans are capped at 120 transcribed minutes and 10 questions a calendar month (server-side, adjustable); quota answers open the Pro page.

Monetisation

Murmur Pro (entitlement pro) is sold through RevenueCat with react-native-purchases: unlimited minutes and questions, the 1:1 and Interview templates and your own. Until you connect RevenueCat to sell, the Pro page shows sample prices ($9.99 a month, $59.99 a year) with the line that subscriptions open in the App Store version, and never grants access. The included revenuecat-webhook function writes Pro to the server, which raises the AI allowance.

Setup

Connect Supabase, add the Gemini key and deploy the functions, then connect RevenueCat to sell Pro. Opening audio files on a phone needs expo-document-picker (one adapter file); sample notes ship without audio, so the player appears for real recordings.