I am heavily reliant on the app PlainText, version 1.7.7. This version was current when iOS 6 was current, and it has been deprecated and replaced by newer versions. The newer versions lack certain crucial features. I know I need to find a different app that fills this niche. As a stopgap measure, can I possibly install PlainText v1.7.7 on my new iPhone 6 Plus? I have the .IPA file (the binary), but I need to get it from my MacBook onto the new iPhone, and iTunes will try to stop me. How do I do this? Thanks.