Does 5.84 to 5.9 affect existing apps?

[graham]

Hi, I bought 5.84 about a month ago. Does an app created in 5.84 need to be maintained in 5.84? I'm am about to deliver first app (5.84) to real users in a couple of days. Can I simply upgrade my 5.84 to 5.9 now, regenerate the app and carry on as normal?

[D Oliveira]

given no custom code in appgini's core files you should be fine to upgrade, always backup your last stable version and db before giving that a try