I use this app fairly regularly to locate public toilets (I walk 15-20 km daily in random directions after getting down a random bus stop in my city) and have contributed some locations as well.

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sonar_un 4 hours ago | parent [-]

I use the app "flush" for this, and it works pretty well.

	▲	spelk 3 hours ago \| parent [-]
		Does it source data from OSM? The app store page doesn't make clear what the data source is.