Vespucci is a really neat tool on android for mapping, and has push notifications for new bug reports within a 200m radius.
It detects your max speed (nothing over running pace - 15-30km/h) to avoid giving you notifications you can't respond to.
It would be good if with mapillary:
* There was a push notification when I walk into an area that is not mapped
* I had a one click way to start mapping
* I could snooze notifications for a given time period if I don't want to map at the moment
* There was a push notification if I'm somewhere that is mapped; but I appear to be moving in the opposite direction
Some of these might be hard without GPS turned on, and not necessarily apply for driving/bike mounted survey; but they would be more likely to get me to map when out and about.