AppTesters is a service/community focused on iOS sideloading — helping people install iPhone/iPad apps that aren’t available through the App Store. Typically, it includes things like: • Certificate-based app signing (so apps can be installed on iOS) • A web signer / signing tools (upload an IPA → get it signed → install) • An IPA library (a catalog of apps/IPA files people can browse/download) • Support + community channels (help with installs, signing issues, device status, etc.)