The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Pulkit Madan:
V2.0--* Much more accurate than before* Fixed other few bugs--Send photos & files across devices with just a tap !Just open waferapp, select the file you want to transfer and tap your computers space bar with your phone!Waferapp also makes phone to phone transfers really easy, you just select the file, shake them near each other and the files will be transferred instantly!