Burnin transcribes the speech in your video right on your iPhone, no network, no account, and burns editable, auto-generated captions into a new file you export. Nothing about the video or its audio ever leaves your phone.
Speech is turned into text using Apple's on-device speech transcription, not a server somewhere.
Tap a caption or the add button to open a full-height editor sheet, drag its start or end on a visual timeline strip, and drag the playhead itself to scrub the video.
Before you share an export, Burnin offers a title and description generated on-device from the transcript, in the tone you pick, with an on-device fallback on iPhones without Apple Intelligence.
Import, transcribe, edit, export. Everything below works with no account.
Speech is turned into text using Apple's on-device speech transcription, not a server somewhere. Once the language pack is downloaded, captioning keeps working on a plane, underground, or with the data switched off.
When five seconds or more go by with no caption, Burnin transcribes just that stretch a second time. Any words it finds are folded back into your captions, and a stretch that's really silent stays empty.
Burnin captions everyone who speaks, in the order they speak. It doesn't label who's talking, so if a conversation needs names or a dash at each new voice, you add them in the editor.
Before you share an export, Burnin offers a title and description generated on-device from the transcript, in the tone you pick, with an on-device fallback on iPhones without Apple Intelligence.
Tap a caption or the add button to open a full-height editor sheet, drag its start or end on a visual timeline strip, and drag the playhead itself to scrub the video. Neighbor-clamping keeps captions from overlapping as you trim.
Tap a caption or the add button to open a full-height editor sheet, drag its start or end on a visual timeline strip, and drag the playhead itself to scrub the video.
Every edit is undoable, tens of steps deep, and your edits are saved automatically as you make them, so closing the app mid-edit loses nothing.
Every edit is undoable, tens of steps deep, and your edits are saved automatically as you make them, so closing the app mid-edit loses nothing.
Burnin detects the spoken language on its own, with a manual picker for when you would rather choose. Per-language packs download once, then everything runs fully offline.
A raw transcript is automatically segmented into caption-length lines, so what appears on screen is something you can actually read at a glance, not a wall of text.
The video preview shows captions burned in exactly as they will appear in the exported file, updated as you edit.
Every video you import becomes a project you can rename, delete, or select many of at once. Projects live on your phone, with no cloud sync and no account.
If the original video file goes missing locally, Burnin can recover it from your Photos library rather than losing the project.
No. Importing, transcribing, editing and exporting all work with no sign-in of any kind, and there is no account to create in the first place.
Only once, to download the language pack for the speech you're transcribing. After that, transcription, gap detection, editing and export all run with no connection at all.
MP4 and MOV, imported from your Photos library or the Files app. Burnin doesn't set a length limit; a longer video just takes longer to transcribe and export.
No transcription is perfect, and Burnin's is no exception. The in-app editor exists because every caption is meant to be checked and adjusted, not accepted blindly. How it works is candid about what's still approximate.
No. Burnin is an iOS app only, with no Android version, no Mac app, and no Apple Watch app.
There is no subscription and there are no ads. Every export resolution currently works with no paywall. A future one-time purchase for something added is possible, but nothing is locked behind a subscription.
For iPhone, on the App Store. No account needed to use it.
Burnin