The top standalone design and construction PDF app to mark up your local PDF documents. Replace pen and paper: avoid printing documents for markup ever again with Drawboard PDf's intuitive and easy to use feature set. Open or create a new PDF, annotate using our extensive array of tools, then save it back as a compatible PDF. Drawboard PDF sets itself apart with a uniquely intuitive user interface/experience, smooth and natural pen inking, stylus and touch input separation, and an impressive array of annotation tools. NEW. Drawboard PDF PRO - Document Builder: Merge, re-order and arrange PDF documents. Calibrated Annotations: Calibrate your document to scale and add linear and area measurements. Digital Protractor: Measure and rule ink at precise angles - compatible with Surface Dial. Grid and Line Templates & Overlays: Select from a range of grids and line templates to enhance your note taking and sketching. (A free trial of Drawboard PDF PRO is available in-app, then as a subscription). Drawboard PDF is an essential tool for Architecture, Engineering and Construction industries. For collaborative and team-based markup solution, check out Bullclip, by Drawboard, at drawboard.com/bullclip. Drawboard PDF is provided with a 3 day free trial, at the end of which you can purchase it from the Windows Store or visit drawboard.com/licensing to inquire about Volume Enterprise Licensing for Drawboard PDF. If you like this app, please support its continued development with great ratings. We also have many plans for further improvements but want to hear your suggestions as well. It is most helpful if you submit your ideas at our User Hub (www.drawboard. uservoice.com), instead of as reviews in the Store, so that we can communicate directly with you. Sometimes we may need more information about feature requests and by posting in the User Hub, we can obtain this from you. Thank you for your support in making Drawboard PDF the best app in the Windows Store.