Delta is once again leading from behind on IT matters. The company's bid software only runs on a Windows. There is a web client but it's clunky and slow.
The 3rd party software (easybid) is only marginally supported and also only runs on Windows. If you want to run them on a Mac, you've got to buy your own replicator software and your own Windows software (although the company will give you Windows Xp in certain situations). Nothing for iPad or the company-provided Surface RT tablet.