Worth it.

I used this app for me and my family after being recommended by a coworker. Didnt believe at first that this is a time saver. We landed in Atlanta international airport today. In fact most of the agents and people directing towards immigration andcustoms werent too much aware of this app. I filled out our passport details offline and when we landed was quickly able to submit for receipts. Got an error at first staring I have to fill old fashioned form but tried again and boom it was approved. We still had to wait in line like most of them who didnt have the app. We were directed to first agent finally who was the only one with qr scanner bar support. We still had to show our passport but our passports werent stamped like normally they do. Agents still seemed clueless what to do. Later asked him are we done? He said yes. I asked ok about custom clearance. He later checked with this supervisor and gave us a placard stating to pick up the bags and exit.
We were going thru green channel where its nothing to declare we approved a lady immigration officer who asked who gave us this? I said huh? The immigration agent gave us this after I downloaded the app. She wanted to see my app for me and my family. Later she still asked me where we were coming from and what we bring in. Since we had nothing to declare or worry we answered and were still made to go thru regular line ( not global entry) and finally made it out.
I gave rating a five as I believe it saved trouble of filling the form and if some of those agents are better trained and equipped it can work lot better.
Honestly this is a new concept so will take time to catch up. But please give it a try.
Great job CBP. Design off the app was very simple and flawless ( except small hiccup in approval at first).
Also If agents are better trained than this works great. And we can be in and out in few minutes.

Kaka dada about Mobile Passport by Airside, v1.1.3