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Construction · head to head

B2W Estimate vs iAuditor by SafetyCulture

B2W Estimate logo

B2W Estimate

Construction

Heavy civil estimating and bidding built on crew, equipment and production rates rather than unit prices

From
On request
Rated
-
Full reviewWebsite
iAuditor by SafetyCulture logo

iAuditor by SafetyCulture

Construction

Mobile inspection and safety management platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only iAuditor by SafetyCulture has a free tier, so it costs nothing to try first.
  • Each has a real cost: B2W Estimate pricing is not published anywhere, and the quote depends on estimator seats plus which of the four other B2W modules you take, so like-for-like comparison with HeavyBid or spreadsheets is impossible without going through a sales cycle; iAuditor by SafetyCulture the free plan is limited to 10 users and 5 active templates
  • They diverge on capability: B2W Estimate covers Production-rate estimating, iAuditor by SafetyCulture covers Digital inspections.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which B2W Estimate and iAuditor by SafetyCulture actually diverge.

Attributes where B2W Estimate and iAuditor by SafetyCulture differ
AttributeB2W EstimateiAuditor by SafetyCulture
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWindows, WebWeb, Ios, Android
FoundedUnknown2004

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 B2W Estimate

  • Production-rate estimating
  • Central resource database
  • Concurrent bidding
  • DOT bid file export
  • Alternates and addenda
  • Field feedback loop
  • Bid analysis

Only in iAuditor by SafetyCulture

  • Digital inspections
  • Safety audits
  • Issue tracking
  • Analytics
  • Corrective actions
  • Procore
  • Microsoft Teams
  • Slack

What people use each for

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

B2W Estimate

  • A grading contractor bids a 40 million dollar DOT job and needs to test three crew configurations against the same quantities before the bid deadlinenot iAuditor by SafetyCulture
  • A utility contractor wants the production rates used in the winning bid pushed into field logging so the superintendent is measured against the estimatenot iAuditor by SafetyCulture
  • An estimating department with four estimators needs several people working on separate sections of one bid without merging spreadsheets by handnot iAuditor by SafetyCulture
  • A contractor moving off HeavyBid wants a resource database it can reuse across estimating, dispatch and fleet maintenancenot iAuditor by SafetyCulture

iAuditor by SafetyCulture

  • Mobile inspection checklists for field teams and compliance auditingnot B2W Estimate
  • Real-time issue reporting and corrective action assignmentnot B2W Estimate
  • Automated performance dashboards with real-time analytics and compliance trackingnot B2W Estimate
  • Offline-capable inspections on iOS and Android without internet connectivitynot B2W Estimate
  • Integration with SAP, Tableau, PowerBI for enterprise data systemsnot B2W Estimate

Where each one falls short

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

B2W Estimate

  • Pricing is not published anywhere, and the quote depends on estimator seats plus which of the four other B2W modules you take, so like-for-like comparison with HeavyBid or spreadsheets is impossible without going through a sales cycle
  • The system is worthless until your own crews, equipment and production rates are loaded, which is typically several months of a senior estimator's time before the first bid comes out
  • It is aimed squarely at heavy civil self-performing work, so a general contractor whose bids are mostly subcontractor quotes gets very little from the production-rate engine
  • The Trimble acquisition means the product now competes internally with other Trimble civil estimating assets, and buyers should ask directly about the long term roadmap for overlapping products before signing a multi-year term
  • Reporting outside the Inform module is limited, so organisations that want bid analytics across years typically end up buying another module or extracting to a warehouse

iAuditor by SafetyCulture

  • The free plan is limited to 10 users and 5 active templates
  • AI credits are metered per seat per month, at 300 on free, 500 on Premium and 800 on Enterprise
  • Unlimited templates and advanced analytics require Premium at $24 per seat per month billed annually
  • Paying monthly rather than annually raises Premium from $24 to $29 per seat
  • The 99.9% uptime commitment and 24/7 support are Enterprise only

Pricing, plan by plan

B2W Estimate

On request
  • B2W Estimate$undefined/year
    • Priced per estimator seat with a separate server or hosting component
    • Additional B2W modules quoted separately
    • Implementation and resource database setup billed as a project

iAuditor by SafetyCulture

Free
  • FreeFree
    • Unlimited inspections
    • Basic templates
    • Photo capture
  • Premium$19/month
    • Advanced analytics
    • Priority support
    • Integrations
  • EnterpriseFree
    • SSO
    • API access
    • Dedicated support

Which should you pick?

Choose B2W Estimate if

  • You need production-rate estimating.
  • You work on Windows, Web.
  • You also want central resource database.
B2W Estimate review

Choose iAuditor by SafetyCulture if

  • You need digital inspections.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want safety audits.
iAuditor by SafetyCulture review

Questions people ask

Is B2W Estimate or iAuditor by SafetyCulture better?
Neither clearly leads. B2W Estimate starts at On request and iAuditor by SafetyCulture at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, B2W Estimate or iAuditor by SafetyCulture?
iAuditor by SafetyCulture has a free tier; the other does not. Paid plans start at On request for B2W Estimate and Free for iAuditor by SafetyCulture.
Does B2W Estimate or iAuditor by SafetyCulture run on more platforms?
B2W Estimate runs on Windows, Web. iAuditor by SafetyCulture runs on Web, Ios, Android.
Can I use iAuditor by SafetyCulture for free?
Yes. iAuditor by SafetyCulture has a free tier, so you can try it without paying. B2W Estimate starts at On request.
What is B2W Estimate best used for?
B2W Estimate is most often used for a grading contractor bids a 40 million dollar dot job and needs to test three crew configurations against the same quantities before the bid deadline, a utility contractor wants the production rates used in the winning bid pushed into field logging so the superintendent is measured against the estimate, an estimating department with four estimators needs several people working on separate sections of one bid without merging spreadsheets by hand, a contractor moving off heavybid wants a resource database it can reuse across estimating, dispatch and fleet maintenance. Of those, a grading contractor bids a 40 million dollar dot job and needs to test three crew configurations against the same quantities before the bid deadline and a utility contractor wants the production rates used in the winning bid pushed into field logging so the superintendent is measured against the estimate are not what iAuditor by SafetyCulture is typically brought in for.
What can B2W Estimate do that iAuditor by SafetyCulture cannot?
B2W Estimate covers Production-rate estimating, Central resource database, Concurrent bidding, DOT bid file export. iAuditor by SafetyCulture covers Digital inspections, Safety audits, Issue tracking, Analytics.

Answered from the vendors’ own pages

B2W Estimate: Is B2W Estimate still sold under its own name?

Yes. Trimble acquired B2W in 2022 and continues to sell it as B2W Estimate within the Trimble Construction portfolio.

iAuditor by SafetyCulture: Is Mitti (formerly iAuditor) free?

Mitti offers a free tier to start inspections and manage issues. Pricing for premium or team plans is not displayed on the vendor website.

Source
B2W Estimate: Is there a perpetual licence?

Current sales are subscription based. Existing perpetual customers have been migrated toward subscription, so treat a perpetual arrangement as something to negotiate rather than assume.

iAuditor by SafetyCulture: What is the cost of Mitti for small teams?

Mitti does not publish per-user or team-based pricing on its website. The vendor directs users to book a demo to discuss plans and costs.

Source
B2W Estimate: How does it compare with HeavyBid?

Both are production-rate estimators for heavy civil. B2W's argument is the shared resource database across estimating, field tracking, dispatch and maintenance; HeavyBid's is depth of bidding features and a large installed base in highway work.

iAuditor by SafetyCulture: Does Mitti charge per inspection or per user?

Mitti's pricing model (per-user, per-inspection, or flat-rate) is not disclosed on the vendor site. Users must request pricing information directly from sales.

Source
B2W Estimate: Does it work for building construction?

Poorly. It assumes self-performed work priced by crew output. Vertical builders bidding mostly subcontracted scopes should look elsewhere.

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