What is Synopsule?

Synopsule is a privacy-first conversation recorder and transcriber for Mac and iPhone that uses on-device Whisper transcription to turn meetings, interviews, and lectures into clean, speaker-labeled transcripts. It keeps every word — and the full audio — on your device, with summaries only generated when you explicitly ask. No accounts, no uploads, no bots joining your calls. A single $4.99 purchase unlocks the app on both your Mac and iPhone.

Who it's for

• Journalists and podcasters who need accurate, speaker-labeled transcripts of interviews without sending audio to a third-party server
• Remote workers and meeting attendees who want to capture both sides of Zoom, Meet, or Teams calls locally, with no bot in the room
• Students and researchers recording lectures or table discussions who need time-anchored notes, full-text search, and exports to Word, Markdown, or Obsidian

Key features

On-device Whisper transcription with speaker recognition

Synopsule runs Whisper entirely on your Mac or iPhone, so your audio never leaves your device. It recognizes returning voices across recordings and labels them automatically — rename someone once and it updates everywhere, from transcripts to search to exports.

Dual-lane recording on Mac

Your Mac captures your microphone and system audio in separate lanes, giving you both sides of a video call without any bot joining the conversation. The raw audio is deleted after transcription, and summaries only run when you opt in.

Time-anchored notes and flags

While recording, you can drop notes and flags that are pinned to specific moments. Tap either one later to seek directly back to that point in the audio. The live transcript runs underneath, and nothing leaves your device.

Full-text search across every transcript

Search spans your entire library of transcripts, with speaker: filters that let you jump straight to a specific voice. Every word is indexed locally, so finding a moment is instant.

What stands out

"No bot. No account. No upload."

That one-liner captures Synopsule's core difference from every meeting tool that ships your audio to its servers. Most apps require a bot to join your call or an account to store your data — Synopsule does the whole job on the device that recorded it. The result is a clean transcript with labeled speakers, full audio replay, and exports any AI can open, all without your conversation ever leaving your Mac or iPhone.

Worth checking out if…

You want a single-purchase app that records, transcribes, and labels conversations entirely on your device — without subscriptions, accounts, or your audio leaving your control. It's especially valuable if you regularly capture meetings, interviews, or lectures and need speaker-labeled transcripts, time-anchored notes, and exports to Word, Markdown, HTML, SRT, VTT, Obsidian, or Apple Notes.