Basically where a little Tapatalk icon stays in the status bar until you check your app or is this not possible?
Opennotifier 9 - tateu maybe? It's what I use to put an icon in the status bar for apps that do not normally generate an icon in the status bar. Libmoreicon is a dependency above iOS 9.1 though I think (instead of libstatusbar). Absolutely no idea if it works in iOS 10 though.