I don’t really feel like it’s up to Chrono to go chasing after people to tell them about the deals. Sure getting yourself noticed is a prime objective of most businesses but for someone to install your app they would probably have to already be well familiar with chrono.
What would an app really do? Just send another notification for you to ignore? Why would someone keep that app running on their mobile device at all times? Or would it have some other sort of functionality that would incentivize it’s usage? You say want to get in contact with people so were you thinking of creating some sort of chrono specific instant messenger?
Just seems to me it’s hard to complain about not getting notified when you’re ignoring notifications and it’d be an awful lot of work to create an entirely new software platform because some people can’t be arsed to visit a site once a day.