1. Address lookups. Many of the buildings in OSM have yet to get street addresses added, so navigating to an address is a bit hit or miss. This gets fixed with time as people update the maps and wouldn't be a show stopper.
2. Real time traffic and detour navigation. This is really needed when navigating around busy cities where a wreck on a major highway can result in significant delays. This needs a combination of an external service (separate from OSM) but also one that has enough adoption to have usable data.
OpenAddresses is perhaps the gold standard for open source address data compilation from government datasets. Note for the future that alltheplaces.xyz (project I contribute to) is looking like it may eventually perform the automatic address data download/extraction/compilation that OpenAddresses currently performs. This has the benefit that in backwards countries, alltheplaces.xyz also obtains some addresses through other means--such as advertised location of international restaurant chains. And quite often, being within +/- 100 address numbers on a road is good enough for navigation. Google Maps obviously crawls addresses from all over the Internet AND has quite a high tolerance for errors, hence will perhaps always seem more complete than OSM.
2. Some further ideas for open source mapping applications trying to determine real time traffic situations:
2a. Use GTFS/GTFS-RT feeds for bus networks to detect real time delays but also to compare planned bus route schedules for different times of the day (different traffic conditions) where buses share the road with the public. There's already a few maps out there that overlay nearby GTFS-RT feeds for the city of interest and usefully provide a visual indication of how well public transport vehicles are currently moving.
2b. alltheplaces.xyz extracts public traffic camera feeds which could be presented to users when they plan/commence a journey as an indication of what lies ahead on the route.
CoMaps fork is adding OpenAddresses integration and traffic (linked above)!
While not updated as frequently, their releases have a pretty high quality and coverage.
Some OSM contributors go brand-by-brand/operator-by-operator in making sure OSM features have the most up-to-date opening hours added to them from matched ATP features. As such, OSM may be fairly accurate for chains too.
For a standalone shop or restaurant the opening hours situation is usually still better with Google Maps rather than OSM. There aren't enough OSM contributors who care enough to check and maintain opening hours for every shop, restaurant, fuel station, etc.
Google has the benefit of having their own street-level imagery for house numbers and street names, Android devices for real-time traffic info, and the ability to simply scrape web pages for shop data including opening hours. but in places with a reasonable number of active mappers, OSM is so much richer and more up to date.
Organic Maps didn’t accept my PR with it…
I'm sure it annoys the stores that keep their website and Yelp etc. updated but there is no way to know who is reliable.
I wonder if we can build a decentralized version of such a reporting service.
I've had Maps.Me on my phone for some years; it's often not as accurate or polished as the commercial offerings (Google, Here Technologies), but it's pretty nice. What might make me switch?
So all forks of the same project. Maps.Me is not open source anymore (I think?), and CoMaps was started by a subset of the Organic Maps community that wasn't happy with the Organic Maps governance.
> What might make me switch?
Different reasons for different people, but OpenStreetMap is a great community project, for one. What I really like with those apps (I am now using CoMaps) is that they are open source, offline first and the UI is quite minimal and clean.
With CoMaps I don't think, there are any original authors involved (?). In any case I prefer organic, the original. Donated and very grateful that this app works so well (except for search where I sometimes use another app).
Google Maps will always have better POI data because they have a larger userbase and they've gamified adding POIs with the "Local Guides" badge.
The main reason to switch is to have an offline-first experience. Google Maps does not provide offline maps everywhere, e.g. South Korea. And if you've ever tried using the Google Maps app on a weak connection, it's frustrating because it still tries to download remote tiles instead of using the ones you've downloaded.
Lastly any contributions you make in OpenStreetMap will show up in Organic Maps / CoMaps for everyone.
Personally, I use Google Maps on a daily basis, but have Organic Maps and regions downloaded for travel and just switch between the two. It's good to have a reliable fallback.
There is still a super long way to go until it suits everyone's needs, but the end + even further is starting to come into sight.