Start free with the full IEC 61025 analysis suite — gates, cut sets, importance measures, FMEA, ETA and more. Upgrade to Professional to work at scale with server-side compute, or Enterprise for signed exports and tailored procurement.
Full breakdown of what's included in each plan.
| Feature | Community | Professional | Enterprise |
|---|---|---|---|
| Workspace & scale | |||
| Projects | 3 | Unlimited | Unlimited |
| Fault trees per project | 10 | Unlimited | Unlimited |
| Team members (seats) | 1 editor + 2 viewers | Seats you buy | Seats you buy |
| Read-only viewers (don’t use a paid seat) | Within your 3 | Unlimited & free | Unlimited & free |
| Private, org-scoped workspace | ✓ | ✓ | ✓ |
| Member & role administration (admin / approver / member / viewer) | ✓ | ✓ | ✓ |
| Maximum fault-tree size | 4 MB | 4 MB | 4 MB |
| Automatic version history retained | 5 | 30 | 30 |
| Core Analysis | |||
| Standard gates — AND, OR, XOR, PAND, INHIBIT | ✓ | ✓ | ✓ |
| Extended gates — VOTE K-of-N; exact XOR/NAND/NOR/NOT (enumeration, ≤20 events) | ✓ | ✓ | ✓ |
| MOCUS minimal cut set analysis | ✓ | ✓ | ✓ |
| Exact & approximate probability calculation | ✓ | ✓ | ✓ |
| Importance measures — Birnbaum, Fussell-Vesely, RAW, RRW | ✓ | ✓ | ✓ |
| Failure rate models — λ/μ steady-state, direct Q | ✓ | ✓ | ✓ |
| ARP4761 per-flight-hour mode | ✓ | ✓ | ✓ |
| Disjoint (mutually exclusive) event groups | ✓ | ✓ | ✓ |
| Failure frequency wtop | ✓ | ✓ | ✓ |
| Reusable event library (per-project) | ✓ | ✓ | ✓ |
| IEC 61025 completeness checklist | ✓ | ✓ | ✓ |
| SIL probability colour coding | ✓ | ✓ | ✓ |
| Advanced Analysis | |||
| Full FMEA — Severity / Occurrence / Detectability / RPN | ✓ | ✓ | ✓ |
| Risk matrix view (5×5 Severity × Likelihood) | ✓ | ✓ | ✓ |
| Event Tree Analysis (ETA) — consequence sequences | ✓ | ✓ | ✓ |
| Failure rate component database (IEC TR 62380 / MIL-HDBK-217F / OREDA) | ✓ | ✓ | ✓ |
| Analytics dashboard — project-wide risk overview | ✓ | ✓ | ✓ |
| In-browser Monte Carlo simulation | ✓ | ✓ | ✓ |
| Server-side high-iteration Monte Carlo (offloaded compute) | — | ✓ | ✓ |
| Sensitivity analysis & what-if tornado chart | ✓ | ✓ | ✓ |
| CCF β-factor common cause failure modelling | ✓ | ✓ | ✓ |
| Workflow & Compliance | |||
| Hazard register with EN 50126 / ISO 26262 traceability | ✓ | ✓ | ✓ |
| Approval workflow — draft → review → approved | — | ✓ | ✓ |
| Reviewer sign-off & approval stamps | — | ✓ | ✓ |
| Immutable organisation audit log — who changed what, when | — | 1 year | Unlimited |
| Separation of duties — the last editor cannot approve their own tree | — | — | ✓ |
| Tree integrity verification (cryptographic hash) | ✓ | ✓ | ✓ |
| Bulk node editing | ✓ | ✓ | ✓ |
| Named view bookmarks & snapshots | ✓ | ✓ | ✓ |
| Getting data in | |||
| Build a whole fault tree from a spreadsheet (CSV from Excel) | ✓ | ✓ | ✓ |
| Editable table view — the tree as a grid, either direction | ✓ | ✓ | ✓ |
| Import from FTA Studio Classic | ✓ | ✓ | ✓ |
| Eight industry fault-tree templates | ✓ | ✓ | ✓ |
| Export & Reports | |||
| PNG / SVG / JPEG diagram export | ✓ | ✓ | ✓ |
| CSV — cut sets, node inventory | ✓ | ✓ | ✓ |
| JSON save & open | ✓ | ✓ | ✓ |
| FMEA CSV export (S/O/D, RPN, sorted by risk) | ✓ | ✓ | ✓ |
| PDF safety report (IEC 61025 compliant) | ✓ | ✓ | ✓ |
| Signed & independently verifiable IEC 61025 JSON export | — | — | ✓ |
| Platform & support | |||
| Community support | ✓ | ✓ | ✓ |
| Email support | — | ✓ | ✓ |
| Priority support, onboarding & roadmap input | — | — | ✓ |
| Self-hosted / on-premise deployment | — | — | ✓ |
| SSO — OpenID Connect (Okta, Entra, Google, Auth0) | — | — | ✓ |
| Dedicated support SLA — 24-hour first response (business days) | — | — | ✓ |
| MSA / custom procurement & invoicing terms | — | — | ✓ |
| On the Enterprise roadmap | |||
| Real-time multi-user collaborative editing | — | — | Soon |
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