Things to improve
I'm used to using Bloomberg alert when I worked in the bank, beauty of that is the alert will keep sending me push notification every 5/10/30 minutes (your choice), so let's say usdcnh above 6.70 is the alert, as long as it's above 6.70 I can get a refreshed live time price on my screen every 5 minutes. If this app can achieve that I'll be the first buyer, and many more others will buy for sure. Without this, I don't see much difference or advantage from other alert apps