"Caption This" is a multimedia app developed by Jonathan Brennecke that adds live closed-captions to your videos. With this app, you can create videos that are perfectly synced to your speech and can be edited to your liking. The app is designed to help increase engagement on social media and make your videos accessible to deaf and hearing-impaired audiences.

The app uses advanced speech-recognition technology to transcribe your speech and add captions that are synced with your video. You can choose from a variety of fonts and colors to customize your captions. The app also allows you to edit the generated captions in the text editor. Moreover, there's no limit on the video duration, so you can create videos of any length.

"Caption This" is easy to use. You can record videos using the built-in camera mode or load videos from your camera library. The app supports both portrait and landscape videos. In camera mode, you can tap any location on the screen to set focus and exposure. You can also shoot videos using either the front or back camera. Overall, "Caption This" is a great tool for content creators looking to improve engagement on social media and make their videos accessible to a wider audience.