I see you haven't had an answer. There is a free option.
Trnio is a free phone app that I have tried that used the accelerometer the phone, and guides you through making a capture.
The capture is uploaded, and you can trim excess parts, and download the model (PLY format) that you can use in various programs.
see [
www.trnio.com]
My printer: Raptosaur - Large Format Delta - [
www.paulwanamaker.wordpress.com]
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Wiki!