STACK
What it is
STACK is project software for working with plan pages, measurements and cost estimation. Its Free plan is priced at no cost and allows one active project per month, up to 300 plan pages, 50 measurements per project and one viewer seat. That gives a user a defined allowance for handling project plans and measurements before choosing a plan with larger listed capacity. STACK uses a freemium pricing model and includes a 7-day trial. It is available on Android, iOS, web and Windows, so users can access it across those platforms. The company was founded in 2011 and is headquartered in Cincinnati, Ohio, USA. Cost estimation is also a listed capability. The practical plan distinction is clear in the listed allowances: Free has monthly project, page, measurement and viewer-seat limits, while Premium and Pro remove those listed caps. The website is the starting point for exploring STACK and its plans.
For and against
For
- Includes cost estimation.
- Free plan supports up to 300 plan pages.
- Free plan includes 50 measurements per project.
- Premium and Pro list unlimited projects and measurements.
- Available on Android, iOS, web and Windows.
Against
- Free is limited to one active project per month.
- Free includes only one viewer seat.
Who it suits
STACK may suit people who need project plan pages, measurements and cost estimation across Android, iOS, web or Windows. The Free plan fits work within one active project per month, 300 plan pages, 50 measurements per project and one viewer seat.
Getting started
- Visit the STACK website.
- Choose a platform: Android, iOS, web or Windows.
- Start with the Free plan at no cost, or consider the 7-day trial.
- Review Premium and Pro if you need their listed unlimited allowances.
Limits to know
The Free plan allows one active project per month, up to 300 plan pages, 50 measurements per project and one viewer seat.
The verdict
Choose STACK if its plan pages, measurements and cost estimation fit your project workflow, and the Free plan's allowances are enough to start. Look elsewhere if you need more than one active project per month or one viewer seat without moving beyond Free.
Questions
Does STACK have a free plan?
Yes. The Free plan is priced at no cost.
What does the Free plan include?
It allows one active project per month, up to 300 plan pages, 50 measurements per project and one viewer seat.
Is there a trial?
STACK lists a 7-day trial.
Which platforms support STACK?
STACK is available on Android, iOS, web and Windows.
Does STACK support cost estimation?
Yes, cost estimation is a listed capability.
Facts on the record
- Acquisition
- Crunchbase records STACK's acquisition of SmartUse as one acquisition.crunchbase.com · read 15 Oct 2026
- API
- STACK offers a public partner API for moving plans and documents into STACK and sending estimate data to accounting or project-management systems.stackct.com · read 15 Oct 2026
- API access conditions
- API use requires a customer subscription with API enabled, a partner account and approval; STACK says it responds to access requests within two business days.stackct.com · read 15 Oct 2026
- Browser performance limits
- STACK recommends Chrome, Firefox or Safari and at least 15 Mbps download and 3 Mbps upload, with 20/5 Mbps recommended.support.stackct.com · read 15 Oct 2026
- Build plans
- Build & Operate Essential includes plan and document management, markups, measurements, issues, version comparison, offline use and role-based folder security.support.stackct.com · read 15 Oct 2026
- Company headquarters
- The company is headquartered in Cincinnati, Ohio, United States.crunchbase.com · read 15 Oct 2026
- Company legal name
- Crunchbase lists the legal name as STACK Construction Technologies, Inc.crunchbase.com · read 15 Oct 2026
- Company size
- Crunchbase places STACK in the 101–250 employee range.crunchbase.com · read 15 Oct 2026
- Developer documentation
- Developer documentation covers authentication, sandbox testing, certification, production deployment, branding and support.stackct.com · read 15 Oct 2026
- Enterprise controls
- The Enterprise Build & Operate tier adds unlimited reviewer users, API integration and single sign-on.support.stackct.com · read 15 Oct 2026
- Estimating
- Quantities flow into live estimates with item and assembly libraries, proposals and AI checks for pricing risk.stackct.com · read 15 Oct 2026
- Evaluate
- The platform uploads plans and specifications, auto-names sheets and flags revisions with AI assistance.stackct.com · read 15 Oct 2026
- Field app
- The mobile field application supports plan viewing, markups, issues, photos, daily reports and workflows.stackct.com · read 15 Oct 2026
- Founded
- Capterra identifies Stack Construction Technologies as founded in 2011.capterra.ca · read 15 Oct 2026
- Headquarters
- Cincinnati, Ohio, USAstackct.com · read 23 Sept 2026
- Integrations
- The partner ecosystem includes CRM, ERP, accounting and construction technology connections, with named partners such as Procore, QuickBooks, Autodesk and Acumatica.stackct.com · read 15 Oct 2026
- Limit: document access
- Some reviewers report outdated documents or difficulty viewing drawings offline despite the product's offline-sync design.getapp.com · read 15 Oct 2026
- Limit: navigation and bugs
- Independent reviews mention difficult navigation, occasional bugs, document-upload friction and time-consuming updates.capterra.com · read 15 Oct 2026
- Limit: performance
- Users report lag or slow performance when internet quality is poor or drawing sets are very large.softwareadvice.com · read 15 Oct 2026
- Limit: pricing
- Reviewers cite high or rigid pricing, annual increases and a desire for more flexible tiered or multi-year discounts.capterra.com · read 15 Oct 2026
- Offline mode
- The Field App can synchronize work completed without connectivity after an internet connection returns.stackct.com · read 15 Oct 2026
- Ownership and funding
- Crunchbase classifies STACK as a private venture-backed company with five funding rounds and lists Level Equity Management and CincyTech among its investors.crunchbase.com · read 15 Oct 2026
- Plan comparison
- STACK provides overlay and side-by-side comparison of drawing versions.stackct.com · read 15 Oct 2026
- Praise: takeoff and estimating
- Review analysis highlights faster, more accurate takeoffs, integrated estimating and time savings as recurring benefits.softwareadvice.com · read 15 Oct 2026
- Praise: usability and support
- Independent reviewers repeatedly describe STACK as intuitive or easy to learn and praise responsive customer support.getapp.com · read 15 Oct 2026
- Rating on Capterra
- 4.5 out of 5 from 1,399 reviewscapterra.com · read 15 Oct 2026
- Rating on G2
- 4.0 out of 5 from 3 reviewsg2.com · read 15 Oct 2026
- Rating on GetApp
- 4.4 out of 5 from 95 reviewsgetapp.com · read 15 Oct 2026
- Rating on Software Advice
- 4.5 out of 5 from 1,399 reviewssoftwareadvice.com · read 15 Oct 2026
- Rating on Trustpilot
- 2.3 out of 5 from 6 reviewstrustpilot.com · read 15 Oct 2026
- Rating on TrustRadius
- 10 out of 10 from 1 reviewtrustradius.com · read 15 Oct 2026
- Security
- STACK states that its cloud platform is SOC 2 compliant and uses industry-standard encryption, secure storage and continuous monitoring.stackct.com · read 15 Oct 2026
- Support
- Customers receive help-center content, webinars, in-app chat, phone and email account-manager support.stackct.com · read 15 Oct 2026
- System requirements
- The iOS app requires iOS 15 or later, Android requires Android 9 or later, and the Windows app supports Windows 8, 10 and 11 with .NET Framework 4.8 or newer.support.stackct.com · read 15 Oct 2026
- Takeoff
- Users can measure linear, area, count and volume quantities and use AI symbol counting and scope suggestions.stackct.com · read 15 Oct 2026
- What it does
- STACK is cloud construction software covering plan evaluation, digital takeoff, estimating, bid management, field collaboration and project closeout.stackct.com · read 15 Oct 2026