@rajatrocks, @sni: I’ve built my own tabs with sliding animations because adding animate.css to ionics tabs, though improved it a bit, wasn’t as significant change like in the case of removing the ion... tags and replacing them with simple divs + animations. The sample code is in this thread above. You’re smart, you should handle 
If you need to check this on a living app, I’ve published one already, but be careful, it is only in Polish language I can provide a link if you want.