Rev sends your audio to 60,000+ freelance transcriptionists. In 2019, a transcriptionist was caught examining sensitive prisoner interview data. Mumbl transcribes on your device with AI. Zero humans involved. Zero cloud uploads.
macOS & Windows — Zero humans involved
"60,000+ freelance transcriptionists at Rev can access your files — anyone with a confidentiality agreement can see sensitive recordings."
In 2019, a Rev transcriptionist was documented examining sensitive prisoner interview data. Confidentiality agreements don't prevent curiosity.
"Access to transcripts by employees is determined on a case-by-case basis, and there isn't a strict set of circumstances." — Rev's own policy.
Mumbl uses AI on your device. No humans listen to your audio. No servers store your recordings. Your voice goes from microphone to text, entirely on your machine.
| Feature | Mumbl | Rev |
|---|---|---|
| Who hears your audio | Nobody — AI on your device | 60,000+ freelance transcriptionists |
| Audio processing | 100% on your device | Uploaded to Rev servers |
| Pricing | Free tier / $9 mo / $149 lifetime | $1.50/min AI, $5.99/min human |
| Speed | Instant — real-time on device | Minutes to hours |
| Data access policy | No data leaves your device | Case-by-case employee access |
| Works offline | Yes | No — cloud required |
Hold down Option + Space
Or customize your own hotkey
Talk naturally
Say what you're thinking, ramble, use filler words. Mumbl cleans it all up.
Release
AI formats it instantly in your chosen style and pastes it wherever your cursor is.
Mumbl processes everything locally using Whisper AI. No cloud uploads. No servers. No data collection. Your words stay yours.
This is the simplest way to 10X your productivity.
I can finally talk to Claude Code with only two keys.
My favorite thing about Mumbl is its simplicity. There aren't any loops you have to go through to make it work and it's intertwined with my device really well. Right now I mainly use Mumbl for school work!
I was spending over $300 a month on Rev. Mumbl runs the same Whisper model locally and the accuracy is comparable. Paid for itself in the first week.
Rev's upload-and-wait workflow doesn't fit how I work. With Mumbl I just start talking and it's there. No uploading, no waiting, no per-minute charges.
I used Rev for depositions for years. The moment I found Mumbl processes everything locally with nothing hitting the cloud, I switched. Data leaving the device is a liability.
This is the simplest way to 10X your productivity.
I can finally talk to Claude Code with only two keys.
My favorite thing about Mumbl is its simplicity. There aren't any loops you have to go through to make it work and it's intertwined with my device really well. Right now I mainly use Mumbl for school work!
I was spending over $300 a month on Rev. Mumbl runs the same Whisper model locally and the accuracy is comparable. Paid for itself in the first week.
Rev's upload-and-wait workflow doesn't fit how I work. With Mumbl I just start talking and it's there. No uploading, no waiting, no per-minute charges.
I used Rev for depositions for years. The moment I found Mumbl processes everything locally with nothing hitting the cloud, I switched. Data leaving the device is a liability.
This is the simplest way to 10X your productivity.
I can finally talk to Claude Code with only two keys.
My favorite thing about Mumbl is its simplicity. There aren't any loops you have to go through to make it work and it's intertwined with my device really well. Right now I mainly use Mumbl for school work!
I was spending over $300 a month on Rev. Mumbl runs the same Whisper model locally and the accuracy is comparable. Paid for itself in the first week.
Rev's upload-and-wait workflow doesn't fit how I work. With Mumbl I just start talking and it's there. No uploading, no waiting, no per-minute charges.
I used Rev for depositions for years. The moment I found Mumbl processes everything locally with nothing hitting the cloud, I switched. Data leaving the device is a liability.
Start free with 10 transcriptions per week. Upgrade anytime for unlimited.
10 transcriptions per week. Perfect to get started.
Unlimited transcriptions. Best value.
Pay once, use forever. All future updates included.
Modern AI (Whisper, which Mumbl uses) matches or exceeds average human transcription accuracy. And it's instant — no waiting hours or days for a freelancer to finish.
Mumbl is optimized for voice-to-text dictation — speak and get formatted text in real-time. It's ideal for notes, emails, documents, and dictation. For transcribing pre-recorded audio files, it's designed for live speech input.
Rev charges $1.50/minute for AI transcription or $5.99/minute for human. Mumbl's free tier gives you 10 transcriptions per day. Paid plans start at $9/month with unlimited use. For regular transcription needs, the savings add up fast.
Download Mumbl for free. Your voice stays on your device.
Switch to MumblmacOS & Windows — Free forever — No credit card