Mobile app development - releasing a binary download (MVP) in a few days which delivers the bulk of the clients required functionality. Somehow, at least for (

Mobile app development - releasing a binary download (MVP) in a few days which delivers the bulk of the clients required functionality. Somehow, at least for (native?) mobile, the spec to implementation transformation still seems magical to many of our clients. I personally think it's the rapid turn around. It seems there's an expectation still that the development will take longer and thus the reaction?