[Mediterraneo10]

Osmand shows opening hours etc. when available, just do a short tap on the POI. As this is a "news for nerds" website, it is worth mentioning that if you find that info absent on OSM, then that means that you can add it for the benefit of all.

[mbirth]

For people that don't want to look into editing OSM directly, there's this website to easily add business information: https://www.onosm.org

Entered data will be added as a note to OSM and experienced editors will then correct/add the business on the map.