Yes, you can download and install Bridge Base Online 5.2.21 on your desktop computer. You can visit the official website of Bridge Base Online and look for the download and installation instructions specific to the version you mentioned.
Bridge Base Online 5.2.21 is not developed to run on iPad Air. The latest version compatible with your device is Bridge Base Online 3.8 which can be acquired from App Store. It requires iOS 4.3 or later.
Yes, you can download and install Bridge Base Online 5.2.21 on your desktop computer. You can visit the official website of Bridge Base Online and look for the download and installation instructions specific to the version you mentioned.
Bridge Base Online 5.2.21 is not developed to run on iPad Air. The latest version compatible with your device is Bridge Base Online 3.8 which can be acquired from App Store. It requires iOS 4.3 or later.