SideloadBox is the iPA Library you deserve. A place to get all of the latest tweaked apps and emulators.
SideloadBox requires Cydia Impactor in order to install applications. Check the link below on how to install with Cydia Impactor.Impactor Tutorial
There are other ways of installing these iPA.
If you have a jailbroken device, get Appsync from Angelxwind's Repo here. For clarity on how to do this, watch iDeviceHelp's video.
Then, click the button on the install pages.
Then... stick to the regular TweakBox. This site was made as an alternate service to TweakBox. Occasionally we would have signed apps appear on here, and will notify you via application descriptions.