@KevinFoyet1 I see. I will also ab test trials vs no trial (cheap introductory offer like 0.99 first week). It really depends on genre whether to use trials or not. But I think you should also make an ab system instead of trying them one at a time because advertising etc. changes by time.
@rsalimx Virality does not usually mean more conversions though. At least this is what I have seen. I think there's a balance between virality and conversions