Compare — all comparisons

Steinlog vs Altura:
which fits a construction bid team?

Altura (NL) sells a structured bid workspace positioned against spreadsheets, and names the Nota van Inlichtingen as a first-class workflow — a genuinely good sign of NL tender fluency. It publishes result tiles and a customer count, and holds ISO 27001. Construction is one of eight industry verticals on its site, with no dedicated bill-of-quantities or RAW handling. As of July 2026, based on public materials.

Side by side

Steinlog vs Altura, dimension by dimension.

Dimension	Steinlog	Altura
Core promise	Found → qualified → assembled → ready for submission, one running plan per bid.	A structured workspace to replace spreadsheets for tracking a bid.
Pricing	Disclosed packaging, no hidden gate.	Packaging is public; actual prices are gated behind a sales conversation.
Onboarding	/start: connect a live TenderNed tender and generate an initial bid plan in the product.	Demo-only funnel; published onboarding ranges from 4–6 weeks to 12 weeks depending on plan, with Professional listed at 6–8 weeks; 3-seat minimum, annual contract.
Construction-native artifacts	Native inschrijvingsstaat, BoQ (RAW/STABU) and UEA handling, purpose-built for the trade.	A /industries/bouw page (with a BAM quote) but construction is 1 of 8 verticals; no BoQ or RAW handling described.
Addendum & clarification tracking	Addenda are diffed against prior versions where available and mapped to affected tasks and draft sections.	The Nota van Inlichtingen is a named workflow, which is a genuinely strong signal of NL fluency.
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.	Published result tiles (a cited 50% win-rate figure and similar), 150+ companies, ISO 27001.
Company stage	New entrant, NL/SE construction focus.	Well-funded — an €8M Series A in June 2025 (Octopus) — and expanding across verticals and geography.

Said plainly

What Altura is good at.

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

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Real, disclosed result metrics and an ISO 27001 certification — a credible trust package for a mid-market buyer.
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Naming the Nota van Inlichtingen as a first-class workflow shows genuine familiarity with how NL tenders actually run.
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150+ companies and a June 2025 Series A give it the resources to keep building across its eight verticals.

The trade

Where Steinlog is different.

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

✓
Construction is the whole product, not one of eight verticals — inschrijvingsstaat, RAW/STABU bills of quantities and UEA are handled natively, not bolted on.
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/start: connect a live TenderNed tender and generate an initial bid plan in the product, versus published onboarding ranging from 4–6 to 12 weeks (6–8 weeks for the Professional plan), a 3-seat minimum, and an annual commitment.
✓
Consortium data rooms for multi-partner bids, a case Altura’s public materials do not address.
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Ireland (EU) assistant inference and a per-client EU database, argued at the architecture level.
✓
A lighter start for smaller contractors that may not want multi-week onboarding or an annual contract.

Verdict