The ony AI app I have tried is Wombo because it fits my budget. lol   Usually you have to be really patient to get a good image.  Many clicks and tweaks.  It stinks at body parts though on the whole.  If I choose which app I really wanted, right now it would be Midjourney.  I like the images I have seen posted done with it the best.  But I am happy exploring Wombo some more and do think I am gradually getting better at using it knowing what its limitations are.