From the update:
The latest version of BattleScribe is now available. BattleScribe is a powerful, universal army list building app that runs on Android, iPhone and Windows/Mac/Linux computers.
Pro users can now save units as a favourite, and re-select it quickly in future rosters. This saves you re-creating that complicated Imperial Guard platoon every time you make a list. If you're using Dropbox, your favourites are synced between your devices/computers, so you have access to your favourites at any time.
There's also the usual round of tweaks, bug fixes and performance improvements.
The update is now available on Desktop and Android. The iOS version has been submitted to Apple and is awaiting approval - it should become available in the next few days.