Great app. There is also https://every-door.app/ that gives you slightly different set of tasks and allows you to place POI easily. I recently mapped a lot of trash cans and benches around my neighborhood while walking with my dog.
The UX is really bad. POI loading is taking 10+ seconds to update, then any zoom or pan reorders the list of locations. Most of the missing info (around me) is just phone numbers and hours of operation, which are boring and should be trivial to collect automatically.
The thing is that the best way to get the phones and opening hours is to walk in person and look them up. Any source for the automated collection is way more likely to be outdated/wrong than what the sign or the person behind the counter tells you. And can also have non-permissive license not compatible with the OSM license.