Google Maps: 40 minutes
Yelp: 3 days 20 hours
Apple Maps: 13 days
https://twitter.com/syneryder/statuses/668473075365642240
I know Apple's policy is to screen edits carefully to ensure accuracy & avoid vandalism, but it's actually making their maps more inaccurate, because it takes longer for errors to be fixed. Google has also started incentivising frequent editors with rewards (like free 1TB Google Drive subscriptions), which helps encourage people to make the corrections in the first place.