Purple Hammer - 2026 Pricing, Features, Reviews & Alternatives

Purple Hammer is a desktop application for construction takeoff and cost estimation that integrates PDF markup, measurement and live spreadsheet functionality into a unified environment. It supports native installation on Macintosh and Windows operating systems. The platform targets professional estimators, quantity surveyors and construction teams performing material takeoffs and cost modelling from architectural and engineering drawings. The solution eliminates the traditional workflow of exporting data between PDF markup applications and external spreadsheet programs.

The core takeoff module provides tools for drawing markup and precise measurement. Drawing sets containing more than five hundred sheets load in about one second and pan and zoom operations render at one hundred twenty frames per second. A Magic Measure feature detects boundaries automatically when an area is clicked or dragged and removes openings such as doors, windows and islands without manual tracing. The live spreadsheet engine calculates costs immediately from measurements using standard functions for arithmetic operations, summation, counts, averages and column references. A specialized formula language, Power Syntax, enables database cost lookups and scoped project totals based on measurement inputs.

Revision comparison uses automatic alignment and blink-compare capabilities. New drawing versions register and align with previous iterations in approximately two seconds without manual scaling or pinning. The blink-compare function allows estimators to switch between drafts visually to identify added, removed or altered elements. Previous takeoff annotations carry over to aligned drawings so that only modified items require remeasurement while spreadsheet totals adjust automatically.

Additional features include snap-to-geometry and grid controls, scale calibration tools, support for imperial and metric units, image search, native vector printing and composition, document and revision control and integration with Model Context Protocol for advanced automation. All processing and comparisons occur locally on the user device without reliance on cloud services or external applications. The toolset consolidates functions traditionally distributed across separate programs into a single desktop solution for construction takeoff and estimating.