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Meetings recorded, transcribed and kept on your Mac.

Gasbag records your microphone and the other side of a call, writes the transcript on this machine and works out who said what. Nothing is uploaded. When you choose, Claude or ChatGPT can read a recording and leave its notes beside it.

Buying opens with Gasbag 1.2, A$45What you get

macOS 15 or later, Apple silicon and Intel. No account to create. Your key and the download arrive the moment payment goes through.

What leaves your Mac, in full.

This is a property of the build, not a policy. One part of Gasbag may use the network. It can reach only the two addresses it names, and it cannot see a recording, a transcript or a title. A test fails the build if any other file so much as mentions the network.

Stays on your Mac

  • The audio
  • Every transcript
  • Titles, names, folders and who you spoke with
  • The assistant’s notes, summaries and drafts

Sync between your own Macs runs over your own Wi-Fi, encrypted and direct, never through a server.

Leaves your Mac

  • A licence check, every few days.

    Your key and a neutral label for the Mac, such as the model and a short tag. Never the Mac’s own name.

  • Anonymous usage counts.

    Fixed event names, numbers and yes/no flags, to TelemetryDeck. Switch them off in Settings. Nothing is sent while the library is locked.

  • Updates.

    Signed and checked before they install. Gasbag sends the update server only its version and your licence key. Included for 2 years from purchase.

How it works

  1. Step 1

    Record

    Press record, or let Gasbag offer when Zoom, Teams, FaceTime or a browser starts using the microphone. Switch on computer audio to capture the other side of the call. It sits in the menu bar too, and ⌃⌥⌘R starts or stops a recording from any app. Import files, folders or Voice Memos and they join the library.

  2. Step 2

    It transcribes itself

    A speech model ships inside the app, so there is nothing to install and nothing to send anywhere. Speaker detection runs as well, naming people Speaker 1 and Speaker 2 until you rename them.

  3. Step 3

    Ask Claude or ChatGPT, if you want to

    In Settings, share one recording or a whole folder with the assistant you use, Claude or ChatGPT. Letting it write is a separate switch from letting it read. Its summary, tasks or draft are saved as Markdown beside the recording, where you can see and edit them.

The rest of it

Two Macs, one library
Show a code on one Mac and type it on the other. Whenever both are on the same Wi-Fi they send each other new recordings with their transcripts, folders and notes, encrypted and directly. Renames, refilings and deletions follow, and a deleted recording keeps a copy in Removed on both.
Lock the library
Your recordings move into an encrypted disk image that opens only with a Gasbag password, with a recovery key for a forgotten one. It locks when the Mac sleeps, the screen locks or it sits idle. While locked, nothing can read them: not Gasbag, not the assistant, not the Finder.
Plain files you own
Recordings are ordinary .m4a files with the transcript as JSON beside them, in your Application Support folder. Export anything. Deleting moves a recording to Removed rather than destroying it.
Honest about permissions
Gasbag asks for Microphone and, if you choose computer audio, System Audio Recording. It never needs Screen Recording.

One price, paid once.

A$45launch price, then A$59

  • One key covers two Macs. It is checked every few days and keeps working for 30 days without the internet.
  • Yours to keep. Includes 2 years of updates. After that Gasbag keeps working; only new versions stop.
  • Your key and the download link arrive by email and on the thank-you page the moment the payment goes through.
  • No account to create. Payment is handled by Stripe. Your recordings stay on your Mac unless you choose to share one with Claude or ChatGPT.

Gasbag for Mac

Licence for two Macs, A$45 once.

Buying opens with Gasbag 1.2

Sold by Resynthesis, Melbourne. Prices in Australian dollars, GST included where it applies. Payment is handled by Stripe; we never see your card. Questions or trouble with a key: [email protected].

Questions people ask

Does it work offline?

Yes. Recording, transcription and speaker detection never touch the network. A licence is checked every few days and keeps working for 30 days without one.

Do I need Claude or ChatGPT?

No. Gasbag records and transcribes on its own. An assistant, Claude or ChatGPT, is an option you switch on per recording or per folder, and off again whenever you like.

Which Macs?

macOS 15 or later, on Apple silicon or Intel. The app carries its own speech model, so the first transcript works with nothing else installed.

Is there a free trial?

Not at the moment. Gasbag is sold outright, and the download comes with your key. If you want to know whether it suits how you work, write to [email protected] and ask.

What happens after the 2 years of updates?

Gasbag keeps working for as long as you like, on the newest version released inside your 2 years. It simply stops checking for updates. Nothing expires and nothing renews. It is not a subscription.

Gasbag is made by Resynthesis, a Melbourne practice. Nothing about it needs us to be involved in your meetings, which is rather the point.