It was interesting enough that Apple would let the Chrome browser into the App Store, as it has previously blocked apps that it felt duplicated native functionality. Of course, there was little way Apple could have blocked Chrome, since it has let other Web browsers into the App Store, previously.
Considering the hate that former Apple CEO Steve Jobs felt over Android, it was always a possibility in the back of our mind, anyway.
The app is far more popular than its Android counterpart, but that's inevitable. After all, Chrome on Android requires Ice Cream Sandwich. That amounts to only about 7 percent of the Android population.