Features

Here are some high level features for the app.

Built exclusively for macOS.
Scale footage on both screens, up to 4K resolution.
Proper scaling for 3DS, DS, and GBA titles.
Record screens together or independently, up to 4K in HEVC or Apple ProRes 4444.
Customizable recording and screenshot settings.
WYSIWYG layout designer to make your ideal recording or streaming layout.
Integrated hardware overlays for authentic feel and presentation.
Big Screen mode for playing on a connect television or monitor while keeping your Mac available for use.

You can read more about the creation of the app in the announcement post.