I transferred my shiny Melmetal over from PoGo and want to get 0 Speed IVs. Is there any way to find out its IVs after I catch it but before I save to leave?
I just checked, and you can leave the GO Park without saving! If you press "Return to Desk" it'll prompt you to save. PRESS NO and you can leave the building without saving, the Pokemon will still be in you party/box :)
Here's a video of me catching a Rhyhorn, leaving the go park without saving, and viewing the IVs
Hope this helps!