Which app is used for building construction?

 There are many apps that can be used for building construction. Some popular options include:

1. PlanGrid: This app allows you to view and mark up blueprints, drawings, and documents in the field. It also allows you to track changes and update project data in real-time.

2. Procore: This is a cloud-based project management platform that helps construction professionals manage projects from start to finish. It includes tools for project scheduling, budget tracking, and document management.

3. BuilderTREND: This app is designed specifically for residential construction and provides tools for project scheduling, communication, and budget tracking.

4. CoConstruct: This app is designed for custom home builders and remodelers and includes tools for project management, customer communication, and budget tracking.

5. Buildertrend: This is a construction management platform that provides project scheduling, budget tracking, and customer communication tools for residential and commercial builders.

There are many other apps available as well, so it's worth doing some research to find the one that best fits your needs.