With iOS Apple decided to remove Google maps and replace it with their own solution. In my opinion the new maps is a lot better. But there is one thing that annoys me. Some apps which have not been updated will open maps links using "http://maps.google.com" which means they will open up in Safari not the maps app.
To combat this I have created a little bookmark. When an app opens a map link in Safari, all you have to do it go to your bookmarks and tap it. It will then open the same link, with the attributes in the maps app.
If you are viewing this from your desktop, you can drag the link below to your bookmarks bar to be synced.
Open in Maps