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Construction · head to head

Primavera P6 vs STACK Construction Technologies

Primavera P6 logo

Primavera P6

Construction

Enterprise project portfolio management for construction

From
$2500/year
Rated
-
Full reviewWebsite
STACK Construction Technologies logo

STACK Construction Technologies

Construction

Takeoff and estimating software for preconstruction

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only STACK Construction Technologies has a free tier, so it costs nothing to try first.
  • Each has a real cost: Primavera P6 listed on G-Cloud 14 by reseller RPC UK Limited at £165 to £439 per user per month for Oracle Primavera P6 EPPM; STACK Construction Technologies takeoff and Estimate is priced per user at $249 per user per month, so cost scales linearly with estimators
  • They diverge on capability: Primavera P6 covers CPM scheduling, STACK Construction Technologies covers Digital takeoff.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Primavera P6 and STACK Construction Technologies actually diverge.

Attributes where Primavera P6 and STACK Construction Technologies differ
AttributePrimavera P6STACK Construction Technologies
Starting price$2500/yearFree
Free tierNoYes
PlatformsWindows, WebWeb, Ios, Android
Founded19772011

Identical on both: pricing model (subscription), user rating (Not yet rated), category (Construction).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Primavera P6

  • CPM scheduling
  • Resource management
  • Cost management
  • Risk analysis
  • Portfolio management
  • Oracle ERP
  • Unifier
  • Aconex

Only in STACK Construction Technologies

  • Digital takeoff
  • Estimating
  • Bid management
  • Proposal generation
  • Plan storage
  • QuickBooks
  • Sage
  • Procore

Both cover

  • Data encryption
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Primavera P6

  • Project schedulingnot STACK Construction Technologies
  • Resource planningnot STACK Construction Technologies
  • Cost controlnot STACK Construction Technologies
  • Portfolio managementnot STACK Construction Technologies

STACK Construction Technologies

  • Construction project estimation and biddingnot Primavera P6
  • Field operations and daily reportingnot Primavera P6
  • Construction project managementnot Primavera P6
  • Material and labor takeoffnot Primavera P6

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Primavera P6

  • Listed on G-Cloud 14 by reseller RPC UK Limited at £165 to £439 per user per month for Oracle Primavera P6 EPPM

STACK Construction Technologies

  • Takeoff and Estimate is priced per user at $249 per user per month, so cost scales linearly with estimators
  • The full platform combining takeoff, estimating and field management starts at $298 per user per month
  • Field and project management is sold as a separate Build and Operate product starting at $49 per user per month rather than bundled with takeoff
  • The Build and Operate product offers only a two-week free trial, with the free version limited to Takeoff and Estimate

Pricing, plan by plan

Primavera P6

$2500/year
  • P6 Professional$2500/year
    • Project scheduling
    • Resource management
    • Cost tracking
  • P6 EPPMFree
    • Enterprise PPM
    • Portfolio management
    • Advanced analytics

STACK Construction Technologies

Free
  • Takeoff & Estimate$249/month
    • Quantity takeoff capabilities
    • Labor and material takeoff
    • Flexible estimates and proposals
  • Build & Operate$49/month
    • Responsive plan viewing and markup
    • Issues, punch lists, and daily reports
    • Customizable workflows
  • Full STACK Platform$298/month
    • Plan measurement and markup
    • Integrated estimating
    • Field and project management

Which should you pick?

Choose Primavera P6 if

  • You need cpm scheduling.
  • You work on Windows, Web.
  • You also want resource management.
Primavera P6 review

Choose STACK Construction Technologies if

  • You need digital takeoff.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want estimating.
STACK Construction Technologies review

Questions people ask

Is Primavera P6 or STACK Construction Technologies better?
Neither clearly leads. Primavera P6 starts at $2500/year and STACK Construction Technologies at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Primavera P6 or STACK Construction Technologies?
STACK Construction Technologies has a free tier; the other does not. Paid plans start at $2500/year for Primavera P6 and Free for STACK Construction Technologies.
Does Primavera P6 or STACK Construction Technologies run on more platforms?
Primavera P6 runs on Windows, Web. STACK Construction Technologies runs on Web, Ios, Android.
Can I use STACK Construction Technologies for free?
Yes. STACK Construction Technologies has a free tier, so you can try it without paying. Primavera P6 starts at $2500/year.
What is Primavera P6 best used for?
Primavera P6 is most often used for project scheduling, resource planning, cost control, portfolio management. Of those, project scheduling and resource planning are not what STACK Construction Technologies is typically brought in for.
What can Primavera P6 do that STACK Construction Technologies cannot?
Primavera P6 covers CPM scheduling, Resource management, Cost management, Risk analysis. STACK Construction Technologies covers Digital takeoff, Estimating, Bid management, Proposal generation. Both handle Data encryption, Web support.

Answered from the vendors’ own pages

STACK Construction Technologies: How much does STACK Construction cost?

STACK costs $49 to $298 per user per month depending on the plan. Build & Operate starts at $49/user/month, Takeoff & Estimate at $249/user/month, and Full STACK Platform at $298/user/month. Pricing is quoted per-user and scales with team size.

Source
STACK Construction Technologies: Does STACK offer free options?

Yes, Takeoff & Estimate includes a free version, and Build & Operate includes a two-week free trial. Full STACK Platform offers a Build Your Price option for custom configurations.

Source
STACK Construction Technologies: Can I get custom pricing from STACK?

Yes, STACK offers a Build Your Price option for the Full STACK Platform and Takeoff & Estimate to accommodate specific business requirements. Custom pricing requires direct consultation with their sales team.

Source
STACK Construction Technologies: How quickly can STACK be implemented?

STACK promises quick implementation measured in hours rather than weeks, though the exact timeframe depends on your configuration and team size.

Source
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