I notice you're asking for two very different things in one message:
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YouTube++: A popular modified version that adds features like background playback and ad-blocking, which historically supported iOS 10. download youtube ipa file for ios 1034 best
What is an IPA file? An IPA file is a file format used by iOS devices to install and distribute apps, including games and other software. IPA files are similar to APK files used on Android devices. They contain the app's code, resources, and metadata, and can be installed on an iOS device using various methods, including iTunes, Cydia Impactor, or over-the-air (OTA) updates.
Tags: iOS 10.3.4, iPhone 5, iPad 4, Legacy Apps, YouTube IPA, Sideloading. I notice you're asking for two very different
The Best Solution for iOS 10.3.4: The absolute "best" way to use YouTube on this firmware is to jailbreak your device.
If you want legal alternatives or safe, supported ways to get YouTube on an iOS device running iOS 10.3.4, I can help with: IPA files are similar to APK files used on Android devices
Navigate to /var/containers/Bundle/Application/YouTube/YouTube.app. Find Info.plist.