Record any conversation. Keep every word on your device.
Notes you'll actually re-read — a clean transcript with who said what, and the full audio kept so you can replay any moment. It all runs on your Mac or iPhone, so nothing leaves your device. Summaries are opt-in, and only the transcript text ever travels.
The difference is where your audio goes.
You leave with notes you'll actually re-read — every speaker labeled, the full audio kept so you can replay any moment, and files any AI can open. Most meeting tools get you there by shipping the recording to their servers. Synopsule does the whole job on the device that recorded it. No bot. No account. No upload.
One app. Your Mac and your iPhone.
These are real screens, not concept art. The same Synopsule runs on both. Install it once and it's on your desk and in your pocket, with each device doing what it's best at.
Mac The full studio
Your Mac sees the most of any conversation.
- Records your mic and your Mac's system audio in separate lanes
- Captures both sides of a Zoom, Meet, or Teams call, with no bot in the room
- Adds PDF to the export list
- A roomy workspace with a companion pane that tabs through Summary, Notes, Speakers, and Flags
iPhone In your pocket
The same studio, wherever the conversation is.
- Records the room through the mic, transcribing live
- Built for interviews, lectures, table talk, and voice notes
- Set the speaker count first for sharper labels
- Share-sheet export — Word, Markdown, HTML, SRT, VTT, or into Obsidian and Apple Notes
Both Identical where it counts
One codebase, one install, the same promise.
- Whisper transcription that runs entirely on-device
- Recognizes returning voices and labels them — on-device
- Tap any line to play it; drop time-anchored notes and flags
- Full-text search across every transcript
- Templated, opt-in summaries — your key, on-device, or Synopsule Pro
On the Mac
The full studio





- 01
Library, transcript, and summary — together.
Pick a recording on the left, read the labeled transcript in the middle, and an opt-in AI summary sits right beside it.
- 02
A directory of every voice.
Speakers follow people across your recordings — and Synopsule recognizes returning voices, labeling them automatically. Rename someone once and it updates everywhere — transcript, search, and exports.
- 03
Your mic and the call, in separate lanes.
Core Audio taps record your microphone and system audio independently — both sides of a Zoom, with no bot in the room.
- 04
Exports that fit where the work lives.
Word, PDF, Markdown, HTML, SRT, and VTT — or one tap into Obsidian or Apple Notes — with a live preview, and speakers and timestamps kept intact.
- 05
Local by default — and you can see it.
Recording stays on the device, raw audio is deleted after transcription, and summaries only run when you ask.
- 06
Find the moment across everything.
Full-text search spans every transcript, with
speaker:filters to jump straight to a voice.
On iPhone
In your pocket





- 01
Every recording in one place.
Starred, drafts, and the full archive — the people in each one shown at a glance.
- 02
See who said what.
Colored speakers, timestamps, and a tap-to-play waveform for any line of the transcript.
- 03
Notes and flags, as you record.
Jot time-anchored notes and drop a flag while you talk — tap either later to seek right back to the moment. The live transcript runs underneath, and nothing leaves the phone.
- 04
Names that stick — and recognize.
Name a voice once and Synopsule recognizes that person in your next recordings on this phone, labeling them automatically — all on-device. Your Mac works the same way.
- 05
Find any moment.
Full-text search across every transcript, with
speaker:filters to jump straight to a voice. - 06
Privacy you control.
An on-device model, an analytics toggle, and AI consent you can review or reset whenever you like.
Built for how conversations actually go.
Long calls. People talking over each other. A hallway chat you wish you'd written down. Synopsule turns all of it into a clean, searchable transcript, with exports that don't need a second app to fix up.
Whisper, running on your hardware.
The transcript appears as you talk, accurate and fully offline. A Whisper model ships inside the app, so it works the moment you open it — then download a larger model, up to 1.5 GB, when you want every word right, and keep several on hand to switch between instantly.
- Transcribes out of the box — a model ships in the app
- Keep several model sizes, switch instantly with no redownload
- Works offline, always · built for hour-long sessions
- macOS 15+ and iOS 17+, tuned for Apple silicon
Capture the call, or the room.
On the Mac, Synopsule records your microphone and whatever is playing through your speakers in separate lanes, using Apple's Core Audio taps. No screen recording, no virtual driver, no bot in the meeting. On iPhone, it records the room through the mic: point it at the conversation and hit record.
- Mac: both sides of Zoom, Meet, or Teams
- Mac: separate lanes for you and everyone else
- iPhone: the whole room through one mic
- Grant permission once
It learns who's who.
When a recording finalizes, on-device diarization separates the voices — and Synopsule recognizes people it has heard before, labeling them automatically. Name someone once and the next time they speak, they're tagged for you. Correct a wrong guess and it learns. A bundled neural voice model does it all on-device, so the voiceprints never leave.
- Recognizes returning voices — matched lines show a “Recognized” chip
- Correct a speaker mid-recording; the fix survives finalization
- On-device neural voice model — voiceprints never leave
- Rename once; it propagates everywhere
Play it back, synced to the line.
Tap any line to jump straight to that moment. As it plays, the transcript scrolls to keep up. Skim an hour in a minute, then land on the exact sentence you came for. Drop time-anchored notes and flags as you go, and tap any of them to seek right back. The audio stays on the device, and you keep it or delete it.
- Tap a line to hear it
- Time-anchored notes and flags — tap any to jump back
- The active line follows the audio
- Audio never leaves the device
Summaries when you ask. Exports that fit.
Pick a template — one-on-one, standup, sales call, interview, lecture, clinical SOAP, legal, or user research — and turn an hour of talk into a structured, speaker-aware recap with owners, tasks, and the questions still open, only when you press Summarize. Run it through your own key, on-device via Ollama or Apple Intelligence so nothing leaves, or Synopsule Pro. Then send the transcript wherever the work lives, with speakers and timestamps intact.
- Templated, speaker-aware summaries — action items and follow-ups in one tap
- Your OpenAI, Anthropic, or Gemini key; on-device via Ollama or Apple Intelligence; or Synopsule Pro
- Export to Word, Markdown, HTML, SRT, VTT, PDF (Mac) — or straight into Obsidian and Apple Notes
Summary
Locked the launch date for October. Engineering will stage the export redesign to fit; marketing starts long-lead comms immediately.
Action items
- Jordan — send updated risk register tonight
- Priya — draft customer comms by Thursday
- Maya — confirm launch date with leadership
Privacy you can diagram.
Not a policy you have to trust, a data path you can follow. Here is everything that happens, and the one thing that can ever leave.
Mic captured to a temporary file. On Mac, system audio too.
Whisper runs locally. Speakers labeled on-device.
Raw capture deleted. Playback copy stays, delete it any time.
Transcript text goes from the app straight to OpenAI, Anthropic, or Gemini. Synopsule never sees it.
One-tap summaries route through our worker to OpenAI. No key to manage, and it works on both devices.
Read the full Privacy Policy.
Your transcripts, ready for any AI.
Export to Markdown and you have the format large language models read best — clean headings, labeled speakers, and timestamps, with nothing to tidy up first. Or, on Mac, let Claude, Codex, and ChatGPT read straight from your library through Synopsule's built-in MCP server. Your words, your tools — and the audio still never leaves the device.
# Launch Review
May 27, 2026 · 21m · 2 speakers · on-device
## Transcript
**Avery** · 00:00
Let's confirm the source separation before we publish the recap.
**Jordan** · 00:14
Speaker names update across every matching segment as soon
as the user confirms them.
## Summary
- Launch recap aligned; source separation confirmed.
- Exports carry clean timestamps and speaker labels.
- Structure a model reads on sight — headings, speakers, and timecodes, no copy-paste cleanup.
- Speaker labels and timestamps ride along, so the AI knows who said what, and when.
- It's just text. No lock-in and no special importer — paste it wherever you think.
Or skip the paste — let Claude, Codex, and ChatGPT read your library directly.
Synopsule ships with a built-in MCP server. Two clicks in Settings → Connect to AI Apps and your assistant can list, search, and pull any transcript on demand. Everything runs locally through the Synopsule app itself — there's nothing extra to download, nothing to update, and the connection is read-only. Audio never leaves the Mac.
- Claude DesktopOne-click install from Synopsule
- CodexApp, CLI, and IDE — one config
- Claude CodeOne terminal command
- ChatGPTDrag a Markdown export in, or tunnel
list_transcriptsRecent recordings with dates, durations, speakerssearch_transcriptsFull-text search with timestamped excerptsget_transcriptThe full Markdown for one recordingget_summaryJust the recap — summary, action items, follow-ups
Try: "What did we decide about pricing on last Thursday's call?" or "Search my transcripts for the Acme launch discussion and summarize what we agreed."
One purchase. Both devices. Forever.
Synopsule is a one-time $1.99 on the App Store — the full app with on-device transcription, speakers, playback, exports, and search, on both your Mac and your iPhone. AI summaries are optional and on your terms.
Synopsule
App Store · Mac + iPhone- On-device Whisper
- Mic + system audio on Mac
- Live recording on iPhone
- Speaker labeling & rename
- Synced playback
- Global search
- Every export format
- Mac and iPhone, one app
AI summaries, your way. Bring your own OpenAI, Anthropic, or Gemini key and pay only your provider for what you use, no subscription — or on a Mac, run a local model through Ollama so nothing leaves the device at all. Or add Synopsule Pro for one-tap summaries with no setup: $4.99/mo or $39.99/yr, and one subscription covers both devices. Either way, your audio stays on the device.
The honest questions, answered.
Is it one purchase for Mac and iPhone?
What's different on iPhone?
Can Synopsule recognize the same person across different recordings?
Where exactly does the audio go?
Do I need an account?
Does it really work offline?
Does the iPhone capture the other side of a call?
How is Synopsule different from cloud notetakers like Otter, Granola, or Fathom?
Can Claude, Codex, or ChatGPT read my transcripts directly?
--mcp, so there's nothing extra to download or update. It's local-only and read-only — transcripts stay on the Mac, and audio is never exposed. On iPhone, the same Markdown exports show up in Files for sharing into the ChatGPT or Claude iOS apps.Can I shape the summary to the kind of conversation?
Do AI summaries send my audio away?
Can I get AI summaries without anything leaving my device?
What do I need to run it?
What formats can I export to?
How much does it cost?
Your next conversation, transcribed in a minute.
Get it on the App Store, grant the mic permission, pick a Whisper model, and press record. No sign-up. No upload. It works the same on your Mac and your iPhone.
Get it on the App Store$1.99