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Calibration software built for ISO 17025

Tamper-evident audit trails. Full traceability chains. Certificate management that auditors love. Built for labs that can't afford compliance gaps.

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ISO 17025 ISO 9001 SWEDAC GDPR compliant

Audit trail view — screenshot coming soon

ISO 17025 requirements, mapped to features

Every compliance requirement tied to a specific ToolLedger capability. No guesswork for you or your assessor.

ISO 17025 Requirement Clause ToolLedger Feature
Equipment records and identification 6.4.3 Asset Registry — complete instrument records with unique IDs, location, status
Calibration and traceability 6.4.6 Calibration module — full event history, traceability chains to national standards
Intermediate checks 6.4.7 Scheduled checks with configurable intervals and alerting
Equipment status labeling 6.4.4 QR/barcode labels with real-time status lookup
Handling of defective equipment 6.4.8 Out-of-tolerance workflows — automatic quarantine, impact analysis
Retention of records 7.5 Tamper-evident audit trail — immutable event log, exportable
Document control 8.3 Document Management — version control, approval workflows
Measurement uncertainty 7.6 Uncertainty recording per calibration event

Tamper-evident audit trail

Every action is logged: record creation, updates, status changes, logins, exports, and deletions. Each entry captures the timestamp, user identity, and before/after values.

Log entries are linked using a cryptographic hash chain. Each entry's hash includes the previous entry's hash, creating an unbreakable sequence. Any modification or deletion of a log entry breaks the chain — making tampering immediately detectable.

Export the full audit trail as PDF or Excel, formatted for assessor review. Filter by date range, user, instrument, or event type. Give your assessor exactly what they need, in the format they expect.

Audit trail log view — screenshot

Traceability chain view — screenshot

Traceability & certificate management

Build complete traceability chains from reference standards through working standards to test instruments. Every link in the chain is documented, visible, and auditable.

Upload PDF calibration certificates and link them directly to calibration events. Certificates are searchable, downloadable, and instantly accessible from any instrument record. When an assessor asks for the certificate for instrument CAL-0042's last calibration, it's one click away.

Certificate generation for in-house calibrations is on our roadmap — enabling labs to produce formatted certificates directly from calibration results within ToolLedger.

How ToolLedger compares

vs Beamex CMX

CMX is a powerful enterprise platform — but it requires significant IT investment, on-premise infrastructure, and extensive training. ToolLedger is cloud-native: no installation, no server maintenance, accessible from any device. You're up and running in minutes, not months.

vs GAGEtrak

GAGEtrak is a solid desktop tool with a long track record. But it's a single-user application that requires local installation. ToolLedger is multi-user, real-time, and browser-based — your whole team works from the same data, simultaneously, from anywhere.

vs Excel

You already know why you're looking at this page.

For a detailed feature-by-feature comparison, see our calibration software comparison or ToolLedger vs Excel.

Designed for Swedish accreditation

ToolLedger is built with Swedish accreditation requirements in mind. GDPR-compliant data hosting on EU-based infrastructure (Supabase). Swedish-language support is planned.

There are 66 SWEDAC-accredited calibration labs in Sweden today. Most still rely on legacy desktop software, Excel, or paper-based systems. ToolLedger brings modern, cloud-native calibration management to labs that need a better way to work.

EU data hosting GDPR compliant Svenska (planned)

Pricing for labs

Professional plan at $89/month covers up to 500 instruments with full compliance features — audit trails, traceability, certificate management, and export-ready reports.

Enterprise plan for labs needing custom onboarding, SLA guarantees, API access, and SSO authentication.

View full pricing details →

Frequently asked questions

Does ToolLedger meet ISO 17025 requirements?
ToolLedger is designed to support ISO 17025 compliance. It provides tamper-evident audit trails (7.5), equipment records with unique IDs (6.4.3), calibration traceability (6.4.6), scheduled intermediate checks (6.4.7), out-of-tolerance workflows (6.4.8), and document control with version management (8.3). ToolLedger is a tool that supports your compliance — accreditation itself is determined by your assessor based on your overall quality management system.
How does the tamper-evident audit trail work?
Every action in ToolLedger — creating records, updating calibration dates, changing instrument status, user logins, data exports — is logged with a timestamp, user identity, and before/after values. These log entries are linked using a cryptographic hash chain, meaning any modification or deletion of a log entry would break the chain and be immediately detectable. The audit trail is exportable as PDF or Excel for assessor review.
Can we use ToolLedger for our SWEDAC accreditation?
Yes. ToolLedger is designed with Swedish accreditation requirements in mind. Data is hosted on EU-based infrastructure (GDPR-compliant), and the platform supports the record-keeping, traceability, and audit trail requirements that SWEDAC assessors look for. Swedish-language support is planned.
How do we migrate from our current system?
ToolLedger supports CSV and XLSX import with automatic field mapping. Export your instrument data and calibration history from your current system, upload it to ToolLedger, map the columns, and import. For Enterprise customers, we offer assisted migration with data validation and parallel-run support to ensure nothing is lost in the transition.
Is the data hosted in the EU?
Yes. ToolLedger uses Supabase for data storage, hosted on EU-based infrastructure. All data is encrypted at rest and in transit. We are fully GDPR-compliant and can provide a Data Processing Agreement (DPA) for organizations that require one.
What's included in the Enterprise plan?
The Enterprise plan includes everything in Professional plus: custom onboarding and training, dedicated account management, SLA with guaranteed uptime, API access for integration with your LIMS or ERP, SSO/SAML authentication, custom data retention policies, and priority support. Contact us for pricing tailored to your lab.

Audit-ready calibration management. Start free or talk to us.

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