This phone app is great for a couple of reasons, the first being the entertainment you can find during day-to-day adult tasks or if you want just to have a socially distant date where you drive around and do quests for the night.
The second reason is that it gives everyone the chance to contribute to open source, no matter how small the experience. This can open the door for many people to discover a new world they didn't know existed. While many other apps work with OSM, this one is the most entertaining and gives you something new to do while you're out and about for the day.
See
Contribute to OpenStreetMap from your phone#
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streetcomplete #
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mappingStreetComplete is an open street map editor used for mapping in the field while on an Android phone.