Best Free Estimating & Takeoff Tools in 2026

Cloud-based construction software accelerated with AI for faster bids and more profitable projects.

4.4/5 across SourceForge, G2 and Capterra · 1,504 ratings, Sep 2026

STACK is a cloud-based construction software solution that combines powerful automation with AI to streamline preconstruction through project closeout. It offers intuitive takeoff, estimating, building, and operating solutions designed to drive efficiency across the construction project lifecycle. The platform is built for various stakeholders including specialty contractors, general contractors, suppliers, manufacturers, owners, and developers. The software accelerates workflows, helps produce faster bids, and supports more profitable projects by providing tools for accurate takeoffs, detailed cost estimating, and streamlined document control. Its cloud-based nature enables anytime, anywhere access and real-time collaboration, while continuous innovation driven by customer feedback ensures the platform evolves to meet industry needs. STACK aims to save time, improve accuracy, and enhance communication for construction businesses of all sizes.

All-in-one software for construction professionals, from takeoff to invoice.

4.5/5 across G2 and Capterra · 249 ratings, Sep 2026

Buildxact is a comprehensive construction management software designed for builders and renovators. It streamlines the entire project lifecycle, from initial estimating and quoting to job management and invoicing. The platform helps users create accurate takeoffs online, connect with material suppliers for up-to-date pricing, and manage purchase orders and costs efficiently. The software aims to increase efficiency by offering faster takeoffs and a quicker quoting process, allowing construction professionals to win more work and keep projects on track. It also provides tools for client communication, ensuring projects run on time and within budget. Buildxact supports both individual builders and larger firms, offering features that simplify complex construction workflows and improve profitability.

Advanced estimating software for construction projects, integrating 2D, 3D, and BIM data.

4.7/5 across G2 and Capterra · 26 ratings, Sep 2026

CostOS Estimating is a comprehensive estimating solution designed for the construction industry. It enables estimators to create accurate and detailed bids by leveraging a single platform that integrates 2D drawings, 3D models, and Building Information Modeling (BIM) data. The software streamlines the entire estimating process, from takeoff and quantity surveying to cost analysis and bid generation, reducing manual effort and improving accuracy. This tool is ideal for contractors, engineering firms, and project owners who require precise cost control and efficient bid management for complex construction projects. By centralizing data and automating calculations, CostOS helps users make informed decisions, mitigate risks, and ultimately win more profitable projects. Its robust features support various project types and scales, ensuring adaptability to diverse industry needs.

Create on-site estimates, capture signatures, and turn them into invoices offline

Invoice Koi is an invoicing app for Android phones, made for independent tradespeople and small trade businesses. Estimates are written on site from a price book of rates, signed on the phone and turned into invoices without retyping. It records deposits and part payments, reads receipts from a photo, bills time and expenses, and exports reports as CSV, spreadsheet or PDF. Drafts and PDFs work with no signal. An iPhone version is in App Store review.

Turn spoken job details into priced estimates customers can approve or pay

Settle is an estimate and invoice app for one-person trades: plumbers, HVAC techs, electricians, handymen, painters, pool and lawn pros. Tap the button and describe the job out loud, and Settle writes a priced, line-by-line estimate using your own prices. Text it from your own phone. Your customer approves or pays from a link, and the money goes to your own Stripe account. Free to send unlimited estimates and invoices. Pro offers unlimited AI-written drafts. iPhone only. No scheduling