Perhaps the most famous archive for "vintage" iOS versions. It features a dedicated section for iOS 6 through iOS 9 apps.
IPA Library is an online repository that hosts a vast collection of IPA files for iOS devices. IPA files are the installation packages for iOS apps, similar to APK files for Android devices. The IPA Library website allows users to browse and download IPA files for various iOS apps, including games, productivity tools, and social media apps. ipa+library+ios+935+free
Use these to install IPAs from your computer. Perhaps the most famous archive for "vintage" iOS versions