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Officially verified details ProofGrit

CMT lab software for small US testing labs.

ProofGrit

ProofGrit Reviews and Details

This page is designed to help you find out whether ProofGrit is good and if it is the right choice for you.

Screenshots and images

  • Image date //
    2026-11-09
  • Image date //
    2026-11-09
  • Image date //
    2026-11-09
  • Image date //
    2026-11-09
  • Image date //
    2026-11-09
  • Image date //
    2026-11-09

Features & Specs

  1. Free trial

    14 days, no credit card

  2. Starting price

    $149 per month

  3. Plans

    Starter $149/month (5 users), Pro $299/month (20 users)

  4. Yearly billing

    2 months free

  5. Platform

    Web (works in any browser)

  6. Best for

    Small US construction materials testing labs

  7. Concrete testing

    Field reports, cylinders, compressive strength with L/D correction

  8. Soil testing

    Proctor curves, nuclear density compaction

  9. Break schedule

    Automatic 7-day and 28-day breaks

  10. Review workflow

    Reviewer approval, locked results

  11. Audit log

    Every change recorded

  12. Reports

    Branded PDF reports sent to clients

  13. User roles

    Admin, reviewer, technician, viewer

  14. Data export

    CSV

  15. Units

    US customary (psi, pcf, in, lbf)

  16. Free tools

    13 free online CMT calculators

  17. Support

    Email, support@proofgrit.com

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Questions & Answers

As answered by people managing ProofGrit.
  1. What makes ProofGrit unique?

    ProofGrit is built only for small construction materials testing labs. Every result comes from one tested calculation library, the same one behind our free public calculators, so anyone can check the math. Each cylinder shows its area, L/D correction and strength, and pass or fail is decided on the value printed on the report, so the decision and the report always agree.

  2. How would you describe the primary audience of ProofGrit?

    Small US construction materials testing (CMT) labs with about 1 to 20 people: lab managers, field and lab technicians, and the engineers who review and sign concrete and soil test reports for construction projects.

  3. Why should a person choose ProofGrit over its competitors?

    If you run a small lab and want to start this week, ProofGrit is simple to adopt: public prices, self-serve signup, a 14-day free trial with no credit card, no sales call and no per-report fees. You can check our calculations against the free calculators on our website before you trust us with your data.

  4. What's the story behind ProofGrit?

    Many small testing labs still keep their most important numbers in spreadsheets that nobody owns, retype the same values several times, and chase cylinder breaks by memory. ProofGrit started by building one calculation library, tested against worked examples, and publishing it as free online calculators. The lab app was then built on top of the same library, so the numbers on the website and in your reports always match. ProofGrit launched in 2026.

  5. Which are the primary technologies used for building ProofGrit?

    Next.js, TypeScript, PostgreSQL, Tailwind CSS and Vitest. Payments are handled by Paddle and email by Resend.

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Is ProofGrit good? This is an informative page that will help you find out. Moreover, you can review and discuss ProofGrit here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.