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We collaborate with industry-leading companies to deliver seamless partnerships and integrations that extend what you can do with STACK.
Existing PartnersAccess your partner tools, register deals, and connect with the STACK team.
Partner with STACKFeatured Partner
STACK and Velixo Partner to Power an Innovative Excel Integration for Construction Estimating
STACK and Velixo launch STACK for Excel, an exclusive integration connecting takeoff and estimating data directly in Excel.
- Resource Center
STACK's central hub for all the essential tools, insights and information you need to get started.
Help & TrainingSTACK's go-to resources for quick answers, video tutorials, support and more.
The ROI of Estimating Accuracy: How STACK Customers are Winning More
Consistent estimating accuracy builds confidence, speeds up bidding, and drives more profitable wins. STACK customers are proving this every day with higher win rates and revenue growth.
STACK vs. On-Screen Takeoff
Stack Up Your Takeoffs with AI-Powered Precision
Outperform On‑Screen Takeoff with STACK’s cloud-based, AI-enhanced workflows. Bid faster, estimate smarter, and boost profits.
Here's Why STACK Outclasses OST
AI-Powered Takeoff Automation
On-Screen Takeoff
OST only offers “Takeoff Boost™” with limited AI to identify wall types and basic measurements
STACK
STACK Assist includes Floor Plan AI and Roof AI, which automatically detect walls, doors, windows, rooms, and roof pitch—creating editable takeoffs so your team can work faster & smarter.
Why does it matter?
STACK Assist shaves hours off manual drawing and minimizes human error. OST can’t compete.
Integrated Estimating & Proposal Tools
On-Screen Takeoff
OST requires you to add-on Quick Bid for estimating workflows.
STACK
STACK seamlessly connects takeoff, pricing (regional cost data + detailed estimates), and proposal output.
Why does it matter?
STACK’s all-in-one platform eliminates manual data transfers and reduces pricing errors, mean you can bid faster and win more.
Cloud-Based Collaboration and Version Control
On-Screen Takeoff
OST is Desktop-centric, so file sharing relies on local syncing.
STACK
STACK’s fully cloud-based platform has plan versioning, overlay, and real-time collaboration. No emailing PDFs or plan version confusion!
Why does it matter?
With OST, you’re stuck in the office. STACK keeps your whole team on the current documents anytime, anywhere.
On-Screen Takeoff | vs. | STACK |
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On-Screen Takeoff | vs. | 
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AI-Powered Floor Plan and Roof Takeoff | ||
OCR-Powered Full-Document Search | ||
Plan Version Control
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Built-In Estimating and Proposal Workflows | ||
Mobile Field App for Real-Time Jobsite Access | ||
Plan Tagging & Labeling | ||
Cloud-Based |
And so much more. To learn more about every feature we’ve got, check out our features page.
Switching to STACK is easy with 5 simple steps
Changing construction software doesn’t have to be a headache. Making the switch to STACK is an investment in the future efficiency and success of your business.
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Frequently Asked Questions
Yes—STACK Assist is available now, automating walls, windows, doors, rooms, and roof takeoffs so your team can focus on estimate accuracy.
Absolutely. STACK is cloud-based with a robust mobile app, letting you view plans, data, and updates anytime, anywhere.
Built-in overlay and version control highlight diffs and keep all team members synced—no more missed revisions.
No. STACK includes integrated estimating tools, cost databases, and proposal generation—everything in one platform.
STACK offers intuitive UI, robust onboarding, and training resources. Plus, your existing takeoff templates and documents can be quickly imported and adapted in-platform.
