Madison customers with iPhones - and iPads - can check their account details and view previous orders, and can also scan barcode while on the shop floor and add them to their order.
The full Madison product catalogue is on the free app, searchable by product category, product code or barcode.
Will Fripp, Madison's Marketing Director said:
"Madison has always embraced advances in technology to develop business to business communication and has never shied away from making the significant investments in technology and infrastructure necessary to maintain our market leading position in this area. The new iOS app is an exciting addition to our award winning B2B e-commerce facility."
The app - available now on the App Store - will not function without a set of valid B2B login details linked to a current Madison trade account.