Apple Ad Placements

I think that when you have an app that appeals to a very large audience. Games can be discovered that same way. But if you have something that's a little bit more niche and that appeals to only a certain user, they're not going to probably browse around the store. The value of the users, I'm not sure I've seen some kind of mixed things. So do you have any insights about Apple such as new placements? And I guess this should be working fine for larger companies, right? If you have small budget, $100 per day and stuff like that.