Dating Advice Needed

So my boyfriend and I have been dating for over two months now and we are both crazy about eachother. It wasn't until recently he was showing me something on his phone and I noticed he had the dating app "hot or not" I trust him 100% and he probably just hasn't deleted it yet. (He has 3000+ photos he doesn't delete things often) I'm just asking for some advice on how I should go about this.