MagicPlan

While most of the applications on this list are geared toward amateur DIYers, MagicPlan is developed specifically for contractors. Users may simply develop and exchange floor layouts, field reports, and estimations using the app. Contractors may easily gather crucial project data, such as task requirements, dimensions, drawings, and markups, using MagicPlan.

You can prepare project reports, sketch blueprints in 2D or 3D, and automatically calculate prices for various tasks. All project data is automatically formatted for more efficient workflows, and project plans are kept in the MagicPlan Cloud for convenient access. The app's free edition contains all functionality for two projects, but you'll need to pay one of three monthly subscriptions to create more.

Detailed information:

Cost: Free + In-App Purchases
Platforms: Android, iOS, Desktop

Link: https://magicplan.app/