On August 13, 2013, PhotoSync released version 2.0 of their robust photo transfer app. This latest version (free to existing owners and $1.99 for new purchases in the iTunes App Store), includes 50 new features.
My favorite among them is the ability to transfer files from W-Fi SD cards to your iPad. This new functionality works with Toshiba FlashAir cards (that I cover on pages 18-21) and with the Transcend Wi-Fi SD card. At this time, PhotoSync does not work with Eye-Fi cards, including the new Eye-Fi Mobi. However the Eye-Fi iOS app is pretty good.
So, those using the FlashAir WiFi SD cards have another option in addition to FlashAir's app (average at best), Olympus Share (pretty good), and now PhotoSync 2.0 (very good).