Cross-Platform Takeoff Estimating Software

I need a robust desktop application that mirrors PlanSwift’s core strength—fast, accurate on-screen takeoffs paired with instant cost calculations—while running natively on both Windows and Mac.

Core scope
• Upload architectural drawings in PDF, TIFF, or common CAD formats.
• Let users set the plan scale, then measure counts, linear runs, areas, and volumes with click-and-drag tools.
• Each measured item should drop straight into an estimating worksheet where labour, material, and markup values can be edited on the fly.
• Calculations must refresh in real time, and the finished estimate should export cleanly to Excel or CSV.

User experience
I’m after a professional, detail-rich interface: dockable panels, layered plan view, colour-coded highlights, right-click context actions, and keyboard shortcuts—something seasoned estimators can live in all day without clutter or gimmicks.

Tech considerations
I’m open to your preferred stack—Electron, Qt, .NET MAUI, or another cross-platform framework—as long as performance with large drawings remains smooth and native installers for both OSes are delivered.

Deliverables
1. Compiled installers for Windows 10+ and macOS 11+.
2. Full, well-commented source code.
3. Brief user guide and developer setup instructions.

Acceptance
The build will be accepted once it successfully:
• Imports a 30-page PDF set in under 10 seconds.
• Completes sample takeoffs with