iPad: https://apps.apple.com/us/app/vb3m/id1560880479
although it's based on old desktop VB3 1.4 version (and not the VB3 II), it's gritty, and screamy, but also soft and gentle (with a bit of harshness) when needed. The only one better solution for iPad is B-3x by IK Multimedia, but it's not 10× better, as the price might suggest
Regarding Purgatory Creeks's VKC - it's a must have if you use EPs in your gigs. And the Pianet N was a very positive surprise for me...