What you may communicate to an app programmer
http://www.appfidelity.com/2011/05/10-tips-for-creating-a-great-app
http://www.sparxoo.com/2012/06/14/tips-for-great-mobile-app-design
http://www.netmagazine.com/features/top-10-tips-naming-your-app
http://www.greenmobility-project.de (national link)
http://www.wattgehtab.com (national link)
http://www.flo-cert.net/flo-cert/
http://www.european-fair-trade-association.org/efta/