E-invoicing E-invoice validation and API
Validate Peppol, EN 16931 and national invoice profiles, explain errors, and process batches through an API.
- Free
- One-file viewing and basic checks remain free.
- Professional
- Batch validation, versioned records, integrations and team workflows.
Web operations Domain and security monitoring
Schedule DMARC, SPF, TLS, DNS and expiry checks and receive a warning when a result changes.
- Free
- Manual one-time checks would remain free.
- Professional
- Continuous monitoring, alert history, multi-domain and agency plans.
Manufacturing Manufacturing quote workspace
Save shop rates, machines and material presets, then turn calculator results into customer-ready quotations.
- Free
- Individual calculations remain free.
- Professional
- Saved profiles, branded documents, job history and team access.
Home energy Saved home-energy scenarios
Save property assumptions and compare battery, solar, heat-pump and tariff scenarios as prices change.
- Free
- Manual calculations and comparisons remain free.
- Professional
- Saved properties, scheduled recalculation and professional reports.
Business tools White-label calculator embeds
Embed selected calculators on another website with optional branding, assumptions and lead routing.
- Free
- Standard public calculators remain free on 4g3n7.
- Professional
- Custom branding, analytics, domains and commercial integrations.
Votes guide research; they are not a release promise. Features are built only when they can be secure, accurate and useful.