From the release:
BattleScribe is a fast and powerful army list creator for Android, iOS, Windows, Mac and Linux. Easily create and edit your army lists for almost any game system and share them with friends.
Version 1.13.05 has just been released which includes the ability to add and remove forces (e.g. allied detachments) from your army list as you create it. There are also a number of important bug fixes and minor improvements.
This version introduces ad support for the free version on desktop, with the option to purchase a "pro" license key to remove the ads and unlock additional features. License keys are on sale for £0.99 until August 11th!