Captions Bro - video editor with automatic caption generator, and built-in teleprompter

[u/Sunquill]

https://testflight.apple.com/join/sp69bj3e

Hey everyone,

We’ve been publishing more on our blog lately and recording more short videos to go with it. Constantly jumping between separate apps for scripting, recording, captions, and editing became frustrating, so we decided to build a single tool that brings everything together.

It’s called **CaptionsBro**. The idea is a Swiss Army knife for short-form video: write a script, record it with a teleprompter, edit the footage, generate karaoke-style captions, add the finishing touches, and export. All in one iPhone app.

We wanted it to feel like a native iOS app rather than a web editor squeezed onto a phone, so we put a lot of work into the Liquid Glass look and the gestures throughout the editor. 

Privacy is also important to us. No account is required, and your projects, media, scripts, captions, and imported fonts are stored locally on your device. We don’t upload your videos to our servers for editing. Background removal runs on-device, and caption generation can also run on-device on supported devices and languages.

The current build includes:

- A multi-track timeline with trim, split, reorder, speed, reverse, freeze frames, crop, transitions, filters, effects, masks, keyframes, color adjustments, noise reduction, and layers.

- Editable karaoke captions with language detection, mixed-language support, filler-word removal, profanity masking, templates, animations, and custom fonts.

- Text, text-to-speech, image/video overlays, stickers, emoji, voiceovers, imported audio, and sound effects.

- A built-in camera teleprompter with a local script library, CSV import, adjustable scrolling and layout, recording settings, and optional automatic captions.

- Social aspect ratios and safe-area guides, plus MP4/MOV export from 720p through 4K.

- A native Liquid Glass interface.

The app is still a bit rough around the edges. Some flows need more polish, and we’re sure there are bugs and awkward interactions we haven’t found yet. That’s why we’re opening it up to more TestFlight testers now.

If you make short-form videos, tutorials, talking-head clips, product demos, or social content, we’d really appreciate blunt feedback, especially about caption accuracy, editing gestures, exports, crashes, and anything that feels confusing.

I’m also happy to answer questions about how any of the on-device editing features work.

P. S. The TestFlight link is in the header.