AltStore is the gold standard for sideloading. It requires a free Apple ID. You can install any IPA you personally own. Better yet, AltStore hosts "AltStore PAL" in the EU, which is an official alternative marketplace.
Many crack tools request your Apple ID credentials. Once provided, attackers can: cracktool4+ipa+free
CrackTool4 requires jailbreaking your device – a process that bypasses Apple's core security architecture. Jailbroken devices experience: AltStore is the gold standard for sideloading