Stack

Name: Stack
Brand: STACK Construction Technologies
Rating: 4.5 (1410 reviews)

K-Ops is a construction management and collaboration platform. Connect field and office. Improve project delivery.

Est 2012|Raised $30K|118 Ref Customers

LinkedIn 8K|Website|Web traffic 160K|FTEs 126|HQ Cincinnati, Ohio, US

Where STACK shows strengths - An integrated preconstruction flow covering takeoff, estimating, and proposal generation under a single vendor. - Usability noted in multiple user reviews as a positive attribute. - The acquisition strategy suggests expansion into adjacent capabilities for field collaboration and bidding workflows. Where alternatives may be preferable - Bluebeam is commonly selected where PDF-centric workflows and annotation practices are the primary need; it is widely recognized for PDF tooling and collaboration. - Autodesk Takeoff can be preferable when a buyer requires close integration with the Autodesk Construction Cloud ecosystem. - Desktop tools such as PlanSwift can be preferable when offline capability or desktop performance is critical. Market adoption signals - Review volumes on specialist review platforms indicate traction within the takeoff/estimating niche.

01Competitive Landscape

Narrative competitive analysis

Where STACK shows strengths

An integrated preconstruction flow covering takeoff, estimating, and proposal generation under a single vendor.
Usability noted in multiple user reviews as a positive attribute.
The acquisition strategy suggests expansion into adjacent capabilities for field collaboration and bidding workflows.

Where alternatives may be preferable

Bluebeam is commonly selected where PDF-centric workflows and annotation practices are the primary need; it is widely recognized for PDF tooling and collaboration.
Autodesk Takeoff can be preferable when a buyer requires close integration with the Autodesk Construction Cloud ecosystem.
Desktop tools such as PlanSwift can be preferable when offline capability or desktop performance is critical.

Market adoption signals

Review volumes on specialist review platforms indicate traction within the takeoff/estimating niche.

	STACK (Takeoff & Estimate)	Bluebeam	Autodesk Takeoff (ACC)
Starting Price	Published per-user annual pricing available from the vendor	Public pricing page lists subscription plans (price varies by tier)	Pricing is typically configured by package and region
Typical Use Case	Estimating teams needing combined takeoff and estimating in a cloud workflow	Teams primarily needing PDF markup/measurement and collaboration	Firms that use Autodesk Construction Cloud and want integrated preconstruction to delivery workflows
Key Strength	Integrated takeoff and estimating workflow with cloud access	PDF review and markup tools with collaboration features and broad industry familiarity	Integration with Autodesk ecosystem and model-based workflows
Key Weakness	Published per-seat pricing and dependency on internet connectivity; some trade-specific assembly gaps	Not a full estimating system by itself; often combined with spreadsheets or other estimating tools	Can be complex and may be more than smaller subcontractors require

Stack

01Competitive Landscape

Narrative competitive analysis

02Market Map

01Competitive Landscape

Narrative competitive analysis

02Market Map