Whilst I think the general direction of Collector is very welcome, it is still too flaky to add to our inventory of mapping tools.
The main reason is that about 1/3 of the startups just sit on the refreshing screen without doing anything. Only killing the android tasks gets it back.
Has anyone else noticed this? I do wonder if it is my phone - a rare Intel powered Android phone, that never was sold in the US (so esri testing would never have happened) - the Moto XT890