https://wiki.openstreetmap.org/wiki/StreetComplete
Basicaly a gamified editor that makes it easy and fun to fill in opening hours and onther important metadata while on the go. Frankly its almost addictive. :)
Another great tool for contributing to OSM is MapWithAI. It uses computer vision to identify the shapes of buildings and roads in satellite imagery, so that you can add them to the map with one click. The AI assistance considerably speeds up the process of adding items to the map, saving you from drawing them by hand.
MapWithAI is integrated with a fork of the online OSM editor (RapiD), which can also be used without learning about the technical details of OSM. If your area is missing a lot of buildings or roads in OSM, and you'd like to improve the maps, I encourage you to give it a try:
I try to use OSM as much as possible and this is perfect for me to contribute info on the go from now on.
When I read your description, I thought that maybe it was an app that prompted you to take a picture of the operating hours sign at a store when you visit, then sends the picture to a queue for someone to do the actual entry. The actual app is entirely different, but my idea might allow even more casual users, like me, to contribute. I don't have time to play an AR game like that, but I could easily snap a few pictures or answer some simple questions when I'm on the go.
In the past I have created a few of those ("gate is no longer there"/"way is blocked by trees", "there is a new ATM at this spot") and some of them have already been addressed (you get an email when it happens).