I found Appshed quite easy to use, if a little cumbersome, but managed to make a good app within a few hours.
The next stage is to upload the app and test it, as I'm sure there are loads of mistakes!
I can still edit the app and users will be able to update their apps when they are connected to the internet.
So here is the web app: http://apps.appshed.com/155224/
Below is the QR code: