Compare — all comparisons

Steinlog vs Mercell:
which fits a construction bid team?

Mercell (Nordics/NL) runs a two-sided procurement marketplace serving both buyers and bidders, with a free trial promising the platform "tailors your trial in minutes." Its proof and case studies are buyer-heavy, and it displays certification badges (ISO/SOC) at the point of conversion — a smart, copyable pattern. Semi-public pricing runs roughly €155–430/month in Norway and £150–250/month in the UK. We did not find public bidder-side materials describing construction-specific artifacts such as inschrijvingsstaat, RAW/STABU BoQs, or Nota van Inlichtingen workflows. As of July 2026, based on public materials.

Side by side

Steinlog vs Mercell, dimension by dimension.

Dimension	Steinlog	Mercell
Core promise	Found → qualified → assembled → ready for submission, one running plan per bid.	A marketplace connecting public buyers and bidders across categories.
Pricing	Disclosed packaging, no hidden gate.	Semi-public: roughly €155–430/month (Norway), £150–250/month (UK).
Onboarding	/start: connect a live TenderNed tender and generate an initial bid plan in the product.	Free trial, described as being tailored to the user "in minutes" — one of the faster first-look options we found among EU competitors, though weaker than a live-tender activation.
Construction-native artifacts	Native inschrijvingsstaat, BoQ, UEA and Nota van Inlichtingen handling.	None described on the bidder side — the platform is built around the marketplace transaction, not bid assembly.
Addendum & clarification tracking	Addenda are diffed against prior versions where available and mapped to affected tasks and draft sections.	Not a named part of the public product story.
Multi-partner bidding	Consortium data rooms — partners see the bid, never each other’s library.	Not addressed in public materials.
Proof	Early-stage pilot program; proof is being built, honestly labeled as such.	Case studies skew toward buyer-side outcomes; ISO/SOC badges are shown at the conversion point, a pattern worth copying.
Company stage	New entrant, NL/SE construction focus.	Established multi-market procurement marketplace, Nordics and NL.

Said plainly

What Mercell is good at.

Honest comparisons name the other side's real strengths. Here is where Mercell earns it.

+
A genuinely fast first look — a free trial that is "tailored in minutes" is the closest thing to instant activation among the EU competitors.
+
Certification badges (ISO/SOC) shown right at the conversion moment, not buried on a separate security page.
+
A mature two-sided marketplace with real reach across buyers and suppliers in several markets.

The trade

Where Steinlog is different.

Not a superset of Mercell — a different shape, built around the full journey from a found tender through to submission readiness.

✓
Built for the bidder from the ground up; Mercell’s public positioning is broader marketplace/procurement infrastructure serving both sides of the transaction.
✓
Construction-native artifacts — inschrijvingsstaat, RAW/STABU bills of quantities, UEA, Nota van Inlichtingen — none of which are part of Mercell’s public bidder-side story.
✓
The bid keeps moving after discovery: deadline cascade, addendum diffing, requirement completeness and draft assembly.
✓
Consortium data rooms for multi-partner bids, a case Mercell’s public materials do not address.
✓
/start matches Mercell’s "tailored in minutes" speed with something more concrete: connect a live TenderNed tender and generate an initial bid plan in the product.

Verdict