I don't know if it's just my phone/set up (Evo 4G, Evervolv JB nightly 02/18/2013), but when I tap the icon in the notification drawer, I have to pull the drawer up manually to get to that contact; if this is how it's supposed to work, it'd be helpful if it automatically pulled the shade up so your contact is waiting there for you. Other than that, cool app and very handy!
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Sent from my Nexus 5