BidX Pro (Mac/Windows) : Free trial by sending an email to [email protected]. http://www.bidx.org/ to download.

BidX Mobile (iOS) : App is free. Bidding/Open time are in-app purchases. Free trial when Registering. Currently not allowed on company iPad. http://www.bidxmobile.com/ to download onto iOS device.

FxCal (iOS) : $13.99 on App Store. Bidding (iPad) and Open Time (any iOS) is via in-app purchase. First month free I think. Welcome to FxPilot for more information. Currently not allowed on Company iPad.

Fx Bid Lite (iPad) : Free on App Store. Bidding is currently free. Not yet prohibited on Company iPad.

Bidding on BidX Pro is a very visual experience. The mobile version has fewer filtering options, and is also very visual-centric.

I can't speak as knowledgeably to Fx Bid and FxCal, but I believe bidding on those is more parameter based (give it parameters, it spits out a bidding solution). I'm sure App Dude can chime in and correct my errors in anything I've written here.

Cheers