BattleScribe has updated their software.
From the update:
Version 1.14.01 has just been released and includes a handful of tweaks and bug fixes. The main thing in this release however, is a significant performance boost when adding/removing selections from your roster – especially on mobile devices.
This should go towards making BattleScribe on your mobile device an all-round more pleasant experience.
This update is now available on Android devices and desktop computers. It has been submitted to Apple and is awaiting approval – it should become available to iOS users within a week.