Do I need an app to connect my iPad to a Cannon MG 5230 printer?

Yes, try Canon's website or you can look into Print N Share or Printopia.

Disregard the above.

If you have the 5320, as stated in your text, that is an Airprint compatible printer. Make sure your firmware is up to date and the iPad and printer are on the same network and you can print.

Message was edited by: deggie

Go to Canon's website and download the full printer manual then update the printer using the control panel on the printer screen.