MDM may be many different things. For me it’s about Master Data Management and for others it’s about Mobile Device Management.
A recent twitter chat session organized by Gartner (the analyst firm) had the tag #GartnerMDM. It was about Master Data Management but of course there also were questions about Mobile Device Management. Andrew White of Gartner replied:
And sure. One of the foremost technology trends being mobile doesn’t have the same attention as other hyped trends like big, social and cloudy within this MDM, but mobile may actually also play a role within master data management.
In my current work with product strategy and product management for a startup within data quality and master data management called iDQ we have been playing with some business cases around an App for this MDM. It has for example been aiming at getting it first time right when NGOs are finding new members on the street and when energy retailers are onboarding new customers on the street.
Have you stumbled upon some business cases for an App for this MDM?
Liliendahl on Data Quality 
We have an app for Verifying, reporting & monitoring MDM Data Quality but MDM App could be a great idea.