May I suggest you to post this kind of apps and interesting stuff and products on steemhunt.com? The platform is dedicated for such type of things, it gives serious upvotes if the product rocks, as this is, and it also shares the post on Stemit so you hit two birds with an arrow.
I have to check in detail that BigONE exchange by the way. Glad to have seen you on the trending page neighbor with that post about the exchange :).