Scarlet allows you to back up your saved data for specific games. This is crucial for hacked games; if the certificate gets revoked, you can delete the app, reinstall Scarlet, and restore your progress without starting over.
After you and try to open it for the first time, you might encounter a message saying the developer is untrusted. This is Apple's security feature kicking in. To fix this: Download Scarlet App
If you have an IPA file from a developer on GitHub or a Reddit forum, Scarlet allows you to install it instantly. Just tap the icon in the top left, select the IPA from your Files app, and Scarlet will sideload it. Scarlet allows you to back up your saved