Long way to go
The UI is pretty good, but really lacks on the memory issue, try reading a few 2d barcodes one after another and it exits. It would hang suddenly and only a restart would get you your phone back. I understand its still a beta,But many other apps are much better in beta. Also the options after an action (ie after reading a barcode) should be customizable. I surely will wait for this app to be ready. All the best.
PS I'm using 5800 and there are other memory/processing heavy apps for the phone which work fine, so this one also should