Transcripts that can't rat on you.

Turn any recording into text on your own computer. Nothing is uploaded.

Open Ratproof Drop in a file. No sign-up.

Watch the 46-second film, with sound Filmed with the Wi-Fi off. Sped-up parts are marked.

0 bytes of your recording sent anywhere.

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Network after dropping a recording

Name	Type	Status
blob:…0ac28e84	media	206
blob:…017d5c57	media	206
blob:…6d696ae5	media	206

Captured 29 September 2026, a 34-second recording: 3 requests. All blob: (your file, read from memory). 0 to any server.

How it feels

Drop in a recording. English text starts within 10 seconds.
Click any phrase to hear it. Fix mistakes in place.
Every transcript is kept here, and you can search them.
No file? Record with your microphone, or record the sound from another tab.

Slower than the cloud: an hour of English takes 7 to 30 minutes. Transcribes English, Spanish, Italian and Swedish. See the numbers

New recordingOn this computer only

Drop the file here Audio or video.

New Recording 14.m4a

New Recording 14On this computer only

2:14

Right, so the scan came back clear. There's nothing there we need to treat.

2:20

Oh, that's such a relief. Sorry. I've not really slept this week.

2:26

That's completely normal. We'll repeat your bloods in March, just to be safe.

2:16 / 9:42

Search your recordings

deposit

Solicitor, house sale14:05

if they pull out before exchange, the deposit comes back to you in full

New Recording 90:40

ask her about the deposit, and who pays for the survey

Parents' evening, Year 9On this computer only

12:48

Sound from the tab you shared. It stays in this window; nothing is uploaded.

Stop recording

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Questions

Is my recording uploaded anywhere?

No. It stays on your computer, and your browser blocks the page's code from connecting to any other server.

Do I need to install anything?

No. It runs in your browser on Windows, Mac, Linux and ChromeOS, even on locked-down work laptops.

Is there a time limit or a sign-up?

No. No account, no email, no card, no limit. Your computer does the work.

How accurate is it?

In English, about 91% of the words it writes are right, on hard audio with four people talking over each other. Switch on Accuracy and it is about 93%. It misses words when people talk at once.

How long does it take?

In English, text starts within 10 seconds, and a whole hour takes 7 to 30 minutes, depending on your computer.

Which languages does it support?

English, Spanish, Italian and Swedish. Choose the language before you transcribe. It can label who is speaking, in meetings and phone calls.

Is there a private alternative to NotebookLM or Otter?

Yes, this is one. It transcribes on your computer, so nothing is uploaded.