NextGIS gives all the features - what I was in search on play store, these days. This reports coordinates at high precision levels, user can define their fields and the system prompts instant filling of attribute values, this has been deviced for a nice layer management. Edit work is really edit work. If unsatisfied the wrongly registered geometries can be deleted. Above all this gives scope to capture the feature of interest by a camera. Table can be exported in Geojson format with Projection defined to email account. Commendable Job done has been done by the team of developers. Can we get "Z" value and "Accuracy of Registration" of locations in defaut fields? ofcourse NextGIS shows them on a screen.

Contains all features which are there in Collector for ArcGIS. Great app! I am getting one problem though. It is connecting to my web nextgis over wifi only. Why is that?

Excellent app for field data collection. Works great offline using Android 4.4.

works well on android 6.0.1 so far. if not, check settings->apps->permissions on your device. // ps. thanks developers for the fast supporting advices.