Missing app in portal


I created a small app this morning on another PC (in work) and saved it so it was clearly showing in the My SmartApps section. Now I’ve got home on another machine, the app I created today isn’t showing. The one I created from my home PC yesterday is showing on both PC’s but not vice versa.
I’ve tried opening an in-private browser to check its not a chacheing issue but its still not showing.

Any idea how I can get to this app to test on actual devices etc now?