This is the best summary I could come up with:
Essentially, Callsheet is a “bespoke” version of IMDb that will appeal to those who prefer a clean, modern, and well-designed experience, we believe — and are willing to pay a small fee for the upgrade.
As one example, users can choose to customize a “quick access” button that appears next to the title and other information, like runtime and rating.
Under the Where to Watch section, powered by JustWatch, you can toggle between the various options to see where you can stream for free, purchase the title, or what subscription services offer the show or film and in which country.
You can also pin favorite shows and movies, like those you’re currently watching, to the top of the app’s home screen for easy access.
The app additionally offers a variety of customization options beyond your spoiler preferences and the Quick Access button, including how you want to sort a TV show’s seasons, whether you want to override your region for the Where to Watch section (helpful if you stream via a VPN to access services outside your country), and your language settings for new and popular media.
In part, that’s because The Movie Database’s API for developers is fairly speedy, as Liss notes, but also because the app isn’t filled with so much clutter.
I’m a bot and I’m open source!