Best Offline Transcription Software in 2026: 7 Local Tools for Audio Files

Short answer: to transcribe recorded audio without sending it anywhere, use a tool that runs a Whisper model on your own computer. On a Mac, MacWhisper is the most complete file tool. On Windows or Linux, Whisper (our app) or the free Buzz work well. If you want one app for both live dictation and audio files on Mac, Windows and Linux, that is Whisper. Developers who want full control can run whisper.cpp from the command line.

Who wrote this: we make Whisper, an offline dictation app. We put it on this list, and we try to be fair about where other tools are the better pick. Prices and features were checked on each maker's site in October 2026 and can change.

This page is about audio files: interviews, lectures, podcasts, voice memos, meeting recordings. If you want to dictate live into documents, see best offline speech to text app instead.

The quick comparison

All seven can run without an internet connection once they are installed and their model is downloaded.

How we picked

A tool made this list only if it can take a recorded audio file and turn it into text on your own machine. We left out cloud services such as Otter.ai, Rev and Descript. They are good products, but your audio goes to their servers, so they do not answer the question "how do I transcribe confidential recordings without internet?"

We ranked by how well each tool fits most people who search for offline transcription: easy setup, works on common computers, handles long files, and keeps the audio local.

1. Whisper

Whisper is a desktop app for Mac, Windows and Linux. You drag an audio file (WAV, MP3, FLAC, M4A, AAC or OGG) into the app and it writes the transcript on your computer. There is no length cap and no per-minute fee. You can pick a larger model for more accuracy or a faster one for speed. The same app also does push-to-talk dictation into any text field, which is why many people buy it.

Transcription never sends audio or text anywhere. The app goes online for the model download, licence activation and optional update checks, and re-checks the licence key about once a day when the computer is online. Offline, it keeps working until the licence end date. See security.

• Price: $29 per year for the first device, $15 per year for each extra device. It does not renew by itself.
• Drawbacks: on Mac it needs Apple Silicon (M1 or newer). No phone app. It does not join or record live calls, and it does not capture audio playing from other apps. You record first, then transcribe the file. It has no integrations with other software; you copy or save the text.

2. MacWhisper

MacWhisper is the most feature-rich file transcriber on the Mac. Its site says "We use local models to transcribe your files, so it's perfect for your most sensitive and private files." It reads common audio and video formats, can batch many files, labels speakers, and exports to formats such as SRT, VTT, TXT and DOCX (macwhisper.com).

• Price: a free tier, and Pro as a one-time €64 licence with updates.
• Drawbacks: Mac only. The free and Pro feature split is not obvious on the site, so check before you buy.

If you need speaker labels or subtitle files on a Mac, MacWhisper is the stronger pick than Whisper. We compare the two in Whisper vs MacWhisper.

3. Buzz

Buzz is a free, open-source app that "transcribes and translates audio offline on your personal computer" (GitHub). It handles audio and video files and live microphone input, exports TXT, SRT and VTT, and has a watch folder for automatic transcription.

• Price: free, MIT licence.
• Drawbacks: the Windows installer is unsigned, so you will see a security warning. Current Mac builds need Apple Silicon. The interface is plainer than the paid apps, and support comes from the community.

4. Aiko

Aiko by Sindre Sorhus is a small, focused app that transcribes audio and video files with OpenAI's Whisper model on the device. The maker says your audio is never uploaded (sindresorhus.com/aiko). It exports text, subtitles, JSON and CSV.

• Price: $24 one-time.
• Drawbacks: Apple devices only. It does not open .ogg files. Few settings, which is a plus for some people and a minus for others.

5. Superwhisper (local models)

Superwhisper is mainly a dictation app, but Pro adds transcription of audio and video files. It can run local models, and its site says it "works offline". The site also notes that offline models run best on Apple Silicon Macs (superwhisper.com).

• Price: free with local Whisper models; Pro $8.49 per month, $84.99 per year or $249.99 lifetime.
• Drawbacks: file transcription is a Pro feature. Cloud models are also offered, so check that you have a local model selected for confidential audio.

6. whisper.cpp

whisper.cpp is the open-source C/C++ engine behind many of the apps above. It runs on Mac, Windows, Linux and even a Raspberry Pi, with GPU support through Metal, CUDA and Vulkan (GitHub).

• Price: free, MIT licence.
• Drawbacks: no app, only a command line. The command-line tool reads 16-bit WAV files, so you convert other formats with ffmpeg first. Best for people who want to script batch jobs.

7. Dragon Professional 16

Dragon is a dictation product first, but Dragon Professional can "transcribe audio files or voice files of another single speaker" and has an Auto Transcribe Folder Agent for batches (Nuance). It installs locally on Windows.

• Price: sold as a perpetual licence, about $690 at US resellers.
• Drawbacks: Windows only. Built for one speaker, so it is a poor fit for interviews, panels or podcasts with several voices. It works best with a voice profile trained on that speaker.

Which one should you choose?

• Mac, lots of interviews or podcasts, you want speaker labels and subtitles: MacWhisper.
• Windows or Linux, or a mix of computers: Whisper or Buzz.
• You also dictate every day and want one tool: Whisper or Superwhisper.
• You want zero cost and accept a plainer app: Buzz.
• You want something tiny and simple on Mac or iPhone: Aiko.
• You script your own pipeline: whisper.cpp.
• You transcribe your own dictated recordings on Windows: Dragon.

Transcribing confidential recordings: what to check

An on-device model is the main thing, but it is not the only thing.

1. Check the model setting. Some apps offer both local and cloud models. Make sure a local model is selected.
2. Watch your sync folders. If the audio file or transcript sits in iCloud Drive, Dropbox, OneDrive or Google Drive, the file is uploaded by that service, not by the transcription app. Keep confidential files in a local folder.
3. Test it offline. Turn off Wi-Fi, transcribe a short file, and confirm it still works. Our offline transcription setup guide shows how, step by step.
4. Read the privacy page. Look for a plain statement that audio is processed on the device.

For the whole workflow from recording to finished text, see how to transcribe audio to text.

FAQ

What is the best offline transcription software?

It depends on your computer. On a Mac, MacWhisper has the most file features. Across Mac, Windows and Linux, Whisper and Buzz both run the Whisper model locally. Buzz is free; Whisper adds polished dictation in the same app.

Can I transcribe confidential recordings without internet?

Yes. Every tool on this list can transcribe a file with Wi-Fi turned off once it is installed and its model is downloaded. Keep the file out of cloud sync folders so it is not uploaded another way.

What are the best local Whisper transcription tools in 2026?

Whisper, MacWhisper, Buzz, Aiko and Superwhisper all run OpenAI's open-source Whisper model (or a version of it) on your device. whisper.cpp is the engine many of them build on, and you can use it directly if you are comfortable with the command line.

Is offline transcription as accurate as cloud transcription?

Local apps and many cloud services use the same family of Whisper models, so the gap is small on clear audio. Larger models are more accurate but slower. Background noise, crosstalk and distance from the microphone affect accuracy more than where the model runs.

Do I need a powerful computer?

A recent computer helps. Apple Silicon Macs and PCs with a modern GPU transcribe much faster. Older machines still work with smaller models, but slower and with lower accuracy.

Is there a free offline transcription tool?

Yes. Buzz and whisper.cpp are free and open source. MacWhisper and Superwhisper have free tiers with limits.