I'm not very satisfied with these apps. They don't look like they Boys imo. Also it's very hard to get good pictures because you can't choose the gender (they often show up in female frames...) plus they often have a total different hair, eye and skin color.
But I thought I show them anyway because they are so handsome. Vlad almost made me faint ^^'
Best I've found so far is the barbify.me app.
For Saiwa I've made a separate post -> here