Apple has always excelled at design and smart user interfaces, but it is not a data company. While it continues to work to make this app what it should be, the best solution is to wait for Google to release its own third-party maps app for iOS. (The company is mum on when exactly that will be, but it will probably happen soon.) In the meantime, there are many other map apps in the Apple App Store, and you can still access Google's service through Safari, though the experience is slower and less intuitive.