Lange ProApp

Lange ProApp is a mobile ordering and inventory tool built for professionals in plumbing, heating, and air-conditioning trades. Access real-time pricing, stock levels, and order management directly from your smartphone—on site, in the warehouse, or at the office.

Search for items and place orders instantly with live inventory display. View your order history, quotes, and delivery notes in a clean, mobile-friendly layout. The barcode scanner lets you capture products in seconds, eliminating manual data entry and reducing errors on the job.

Navigate your warehouse faster with built-in location finder. The app guides you to storage spots, saving time during picking and stock verification. Every feature was designed with trade professionals in mind—streamlined workflows, no unnecessary complexity.

Logged-in customers of Friedrich Lange GmbH gain instant access to pricing, availability, and order status anytime. Download Lange ProApp free and stay connected to your inventory and orders from anywhere. Note: Registration as a Friedrich Lange GmbH customer is required to use the app.