Having used the desktop version for 8 years I would consider the web based iPad version almost unusable. Extremely painful to use especially if you have some seniority and can bid specific trips on specific days. Maybe it would be useable for basic RSV days off preferences but that's about it. I installed Navtech PBS on my home machine and bid as we always have with the desktop version. Leave the web version for the FAs as they have never had access to the desktop version since they were never issued laptops!