"This app finds missing map data in your vicinity and displays it on a map as quests. Solve each quest by visiting the location on-site and answering a simple question to update the map."

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[–] 11 points 2 years ago

I use it once in a while when I'm taking a walk, it's made purposely to fill stuff easily on the go.

For more detailed/complex edits, I go with Every Door.

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