iOS 9.3.5 is limited by 512MB to 1GB of RAM. Don’t expect modern multitasking; treat the device as a single-task portable tool. The Verdict
Some community-driven sites focus on apps that still work on iOS 9, such as older versions of YouTube, Spotify, and Netflix. How to Sideload IPAs onto iOS 9.3.5 ipa library ios 935 portable
Older versions of GoodReader or Evernote that don't require heavy cloud syncing. Safety and Precautions such as older versions of YouTube