Use case
Transcribe audio files to text
Not just chat apps. Turn recordings on your phone — lectures, interviews, meetings, voice memos — into readable text.
Any supported file, straight from your phone
Pick an audio file in Hearless and it becomes text in seconds. It’s built for the everyday recordings that pile up — a lecture you can’t replay in full, an interview you need as notes, a meeting you half-remember.
Supported formats
- MP3
- M4A
- WAV
- OGG / Opus
- AAC
- FLAC
- AMR
- WMA
- 3GP
- WebM
- MP4
Good for
- Students turning recorded lectures into readable notes.
- Journalists and researchers transcribing interviews.
- Anyone saving a meeting or memo as searchable text.
Questions about audio files
What audio formats can Hearless transcribe?
MP3, M4A, WAV, OGG/Opus, AAC, FLAC, AMR, WMA, 3GP, WebM and MP4. If a file needs converting first, Hearless does that automatically.
Can I transcribe a lecture or interview recording?
Yes. Pick the file from your phone and Hearless turns it into text. There is no length limit.
Does it only work with WhatsApp?
No. You can share a WhatsApp voice note, or pick any supported audio file from your phone.
How accurate is it in other languages?
Hearless supports 60 languages plus Auto Detect, and can return Urdu, Hindi, Punjabi, Arabic, Bengali and Nepali in Roman script.
Is there a file-size limit?
There is no length limit — long recordings are handled automatically by splitting them behind the scenes.
What happens to my file?
Audio is processed by OpenAI via our servers to turn it into text; we don’t store it.