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Construction · head to head

ALICE Technologies vs STACK Construction Technologies

ALICE Technologies logo

ALICE Technologies

Construction

Generative construction scheduling that produces and compares millions of build sequences

From
On request
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: ALICE Technologies the output is only as good as the recipes, and building accurate recipes is specialist modelling work most contractors cannot staff, so engagements depend on ALICE or a consultant doing it, which turns software into a services contract.; 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: ALICE Technologies covers Generative scheduling, STACK Construction Technologies covers Digital takeoff.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where ALICE Technologies and STACK Construction Technologies differ
AttributeALICE TechnologiesSTACK Construction Technologies
Starting priceOn requestFree
Pricing modelquotesubscription
Free tierNoYes
PlatformsWeb, WindowsWeb, Ios, Android
FoundedUnknown2011

Identical on both: 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 ALICE Technologies

  • Generative scheduling
  • Recipe modelling
  • Optioneering
  • Schedule recovery
  • Resource levelling
  • 4D visualisation
  • P6 and MS Project import
  • Scenario comparison reports

Only in STACK Construction Technologies

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

What people use each for

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

ALICE Technologies

  • A data centre programme where six months of earlier energisation is worth more than the entire construction management budget, and the owner wants evidence that a proposed sequence change actually delivers itnot STACK Construction Technologies
  • A contractor facing liquidated damages that must decide between a second shift, a second crane and resequencing, and needs the cost and duration consequence of each before committingnot STACK Construction Technologies
  • A bid team wanting to submit a shorter programme than competitors while proving to the client that the resource profile is achievable rather than optimisticnot STACK Construction Technologies
  • A delay claim where the contractor must demonstrate to a client or adjudicator what the schedule would have looked like without a specific disruptionnot STACK Construction Technologies

STACK Construction Technologies

  • Construction project estimation and biddingnot ALICE Technologies
  • Field operations and daily reportingnot ALICE Technologies
  • Construction project managementnot ALICE Technologies
  • Material and labor takeoffnot ALICE Technologies

Where each one falls short

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

ALICE Technologies

  • The output is only as good as the recipes, and building accurate recipes is specialist modelling work most contractors cannot staff, so engagements depend on ALICE or a consultant doing it, which turns software into a services contract.
  • Pricing is quoted per project or programme with no published rates, so the tool is effectively unavailable to anyone who cannot justify a bespoke enterprise negotiation.
  • It only pays back on projects where float has a high monetary value; on a mid-size commercial building the modelling effort exceeds the schedule saving, which is why the customer list skews to data centres, energy and heavy civils.
  • A generated schedule still has to be accepted by superintendents and subcontractors who did not build it, and adoption failures are usually social rather than technical: the field runs the plan it believes in.
  • The 2026 McKinsey alliance pushes distribution towards consulting-led engagements, which raises the effective cost of entry and makes the direct-purchase path less certain for a contractor that just wants a licence.

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

ALICE Technologies

On request
  • ALICE$undefined/year
    • Quoted per project or per programme
    • Generative scheduling and optioneering
    • Recipe modelling support

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 ALICE Technologies if

  • You need generative scheduling.
  • You work on Web, Windows.
  • You also want recipe modelling.
ALICE Technologies 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 ALICE Technologies or STACK Construction Technologies better?
Neither clearly leads. ALICE Technologies starts at On request and STACK Construction Technologies at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ALICE Technologies or STACK Construction Technologies?
STACK Construction Technologies has a free tier; the other does not. Paid plans start at On request for ALICE Technologies and Free for STACK Construction Technologies.
Does ALICE Technologies or STACK Construction Technologies run on more platforms?
ALICE Technologies runs on Web, Windows. 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. ALICE Technologies starts at On request.
What is ALICE Technologies best used for?
ALICE Technologies is most often used for a data centre programme where six months of earlier energisation is worth more than the entire construction management budget, and the owner wants evidence that a proposed sequence change actually delivers it, a contractor facing liquidated damages that must decide between a second shift, a second crane and resequencing, and needs the cost and duration consequence of each before committing, a bid team wanting to submit a shorter programme than competitors while proving to the client that the resource profile is achievable rather than optimistic, a delay claim where the contractor must demonstrate to a client or adjudicator what the schedule would have looked like without a specific disruption. Of those, a data centre programme where six months of earlier energisation is worth more than the entire construction management budget, and the owner wants evidence that a proposed sequence change actually delivers it and a contractor facing liquidated damages that must decide between a second shift, a second crane and resequencing, and needs the cost and duration consequence of each before committing are not what STACK Construction Technologies is typically brought in for.
What can ALICE Technologies do that STACK Construction Technologies cannot?
ALICE Technologies covers Generative scheduling, Recipe modelling, Optioneering, Schedule recovery. STACK Construction Technologies covers Digital takeoff, Estimating, Bid management, Proposal generation.

Answered from the vendors’ own pages

ALICE Technologies: What does ALICE actually produce?

A set of alternative construction sequences generated from your constraints, scored on duration, cost and resource use, so you can choose rather than accept one plan.

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
ALICE Technologies: Does it replace Primavera P6?

No. It imports from and exports to P6. P6 remains the contractual schedule of record on most projects.

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
ALICE Technologies: Is the company still operating?

Yes. ALICE is active as of 2026 and announced an alliance with McKinsey in April 2026 to deliver AI scheduling to McKinsey clients.

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
ALICE Technologies: How much does it cost?

Not published. It is quoted per project or programme and typically includes modelling and onboarding services.

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
ALICE Technologies: What size project justifies it?

Projects where a week of schedule has a large monetary value: data centres, energy, industrial and major infrastructure. It is hard to justify on standard commercial building work.

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