If you hadn't noticed, there have been a lot of app updates to accommodate the launch of iOS 7. You may not have to use a WiFi hotspot to grab them all, though -- Apple has quietly raised iOS' cellular download cap from 50MB to 100MB. You won't be loadingInfinity Blade III while on the road, but the ceiling is high enough that moderately-sized apps like Sky Guide are now available over the air. Just make sure you've got enough spare bandwidth.
http://www.engadget.com/2013/09/18/a...100mb-for-ios/