App downloads from Appstore - duplication
I have a ipad Wifi model...to optimize my data download costs on my relatively expensive wifi connection, i buy apps from the appstore on my pc using itunes which is then synced successfully with the ipad. This has worked well for me so far.
The only problem is that when i connect my iPad directly to a wifi source...i find that the apps that are already installed start downloading all over again. This defeats the purpose of having downloaded it on pc and using sync to install it to iPad. The cost of data transfer on my wifi begins to hurt when this happens as some of the gaming apps are around 500MB.
Not sure why this duplication happens, please suggest if there is a way to stop this from happening? Thanks