Wordburn adds captions to your video without sending it anywhere.

Pick a clip and the speech is transcribed on your phone. No server, no account, no upload, no sign-in. Wordburn works in airplane mode exactly as well as it works on wifi, and your video never leaves your device.

AUTOMATIC CAPTIONS, ON YOUR PHONE
Speech recognition runs offline, on-device. Drop in a clip and get word-by-word captions with timing, ready to edit.

NINE CAPTION STYLES
Clean subtitle, box highlight, karaoke fill, editorial, spotlight, word stack, headline, newsprint and neon. Every style animates word by word, and the preview is exactly what gets burned into the file.

IT HEARS THE WORD YOU LEANED ON
Other caption apps ask you to type a list of keywords to emphasise. Wordburn listens. A word said louder, held longer, or set off by a pause is picked out and styled as the big word, from how you actually said it, without tagging anything.

EDIT EVERY WORD
- Fix a misheard word without changing its timing
- Nudge, split, merge and drag word timings on a waveform
- Shift every caption at once if they run early or late
- Low-confidence words are flagged so you know what to check
- Undo and redo everything

MAKE IT YOURS
Choose the colour, the text size, the position on the frame and how many words appear per line. Your style is remembered for the next video.

A PERSONAL DICTIONARY
Teach Wordburn how to spell your brand, your handle, or a name it keeps getting wrong. Spell it once and it is spelled that way in every video after.

EXPORT
Captions are burned into the video on your phone, at full quality, and saved straight to your gallery. Audio is copied across untouched, with no second compression pass. You can export a .srt subtitle file too.

PAY ONCE
The first three exports are free: full quality, no watermark, every caption style and every editing tool unlocked. After that, one purchase gives you unlimited exports forever. There is no subscription and there never will be.

An auto subtitle maker, caption generator and subtitle burner in one app, working entirely offline.

PLEASE NOTE
Wordburn transcribes English. It does not translate and does not support other languages.