It should be possible to upload new payments and the photos of receipt to the app. I cant believe this is not already part of the functionality!
This is the most important thing that is needed 'on the move' when away form desk to prevent that awful back-up of receipts
This is something that is offered by KF competitors and I know its something I would use several times a day. It would have a big impact on my working day in terms of reducing my admin time at the end of the week when there is a big pile of receipts on my desk.