The search for a is a wild goose chase. They are two different operating systems of modification. Cydia lives in the kernel; Scarlet lives in the sandbox.
Before diving into repositories, it is important to understand the tool at the center of this process. is a third-party app installer for iOS. It allows users to sideload IPA files (iOS App Store packages) directly onto their devices without the need for a computer or a developer account.
: Scarlet does not require a jailbreak to function.