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Evalium Pricing & Retention Model

1. Pricing Philosophy​

Evalium is priced on Operational Defensibility, not headcount.

Most platforms monetise access (per-user fees) or activity (per-submission limits). Evalium monetises proof quality over time.

We deliberately provide unlimited users and execution volume to encourage organisation-wide adoption, while anchoring value in:

  • Verification rigor
  • Ledger integrity
  • Retention longevity
  • Client transparency

You are not paying for “features”. You are paying for how confidently your records survive scrutiny.

2. Subscription Tiers (2026 Standard Pricing)​

🟢 Foundation — Operational Proof​

£149 / month (Founding Offer: £99 / month — Locked for Life)

For individuals and small teams establishing a verifiable execution record.

Designed to replace paper, spreadsheets, and informal tooling with a durable digital history.

Includes:

  • Usage: Unlimited users, assignments, sessions, and submissions

  • Verification:

    • Level 1 — Self-declared execution
    • Level 2 — Peer verification

  • Integrity:

    • SHA-256 hashing at ingestion (tamper detection anchor)

  • Retention (Media / Hot Storage):

    • 12 months instant access

  • Ledger:

    • Permanent forensic record
    • PII scrubbed after 24 months unless retention is extended

  • Access Model:

    • Internal users only
    • No external Glass Box sharing

Best for: Operational teams digitising delivery and building a defensible execution history without high-rigor verification requirements.

🔵 Pro — Verified Delivery​

£449 / month (Founding Offer: £199 / month — Locked for Life)

For organisations operating under regulatory, contractual, or client-audit pressure.

Includes everything in Foundation, plus:

  • Verification:

    • Level 4 — Context-verified execution
    • GPS, trusted time source, and device identity (policy-driven)

  • Identity Assurance:

    • Step-Up Identity (MFA / WebAuthn) for high-stakes actions
    • Required for approval, amendment, and void operations

  • Retention (Media):

    • 24 months hot storage
    • Automatic archival to cold storage (S3 Glacier)

  • Retention (Ledger):

    • Multi-year retention with PII preserved per policy

  • Transparency:

    • Glass Box Portal
    • Read-only, scoped access for clients, auditors, and stakeholders via secure links

Best for: Professional services firms that must prove work was done correctly — not just report outcomes.

🔴 Enterprise — Governance & WORM​

£1,500+ / month (Annual Contract)

For high-liability environments where record immutability and long-term retention are statutory or existential.

Includes everything in Pro, plus:

  • WORM Enforcement:

    • Storage-level Write Once, Read Many (WORM) policies for assets and ratified artefacts

  • Retention:

    • 10–40 year retention windows (industry-specific)

  • State Ratification:

    • Cryptographic milestone sign-off by authorised stakeholders

  • Assurance:

    • Contractual SLAs
    • Priority support and onboarding

Best for: Organisations where records must withstand hostile audits, litigation, or regulatory inquiry decades later.

3. Storage & Retention Lifecycle​

Evalium uses a three-stage lifecycle to maintain high performance while supporting long-term defensibility.

StagePeriodLedger State (PostgreSQL)Media State (Object Storage)
Stage 1: Active0–24 monthsFully queryable, includes PIIHot storage (instant access)
Stage 2: Archive2–7 yearsHeritage partitions, PII retainedCold storage (Glacier, ~12h retrieval)
Stage 3: Legacy7+ yearsPII scrubbed, facts & hashes preservedMedia purged unless extended

Key Principles​

  • Ledger facts and cryptographic hashes are never deleted
  • PII is scrubbed to satisfy GDPR “storage limitation”
  • Media retention is configurable and billable
  • Performance of live workloads is never compromised by legacy data

4. Revenue Expansion (Bolt-Ons & Extensions)​

Customers can increase defensibility without upgrading their entire plan.

  • Hot Storage Extension £30 / month per additional 12 months of instant-access media

  • Legacy Retention Extension Long-term cold storage (15+ years) for regulated sectors (Pricing by volume and duration)

  • Compliance Pack Export £99 per export Forensic-grade ZIP containing:

    • Media assets
    • Hash manifests
    • Ledger event logs
    • Verification metadata Suitable for regulators, courts, or contractual delivery.

5. Technical Guardrails (Engineering Contract)​

These are non-negotiable system invariants, not implementation preferences.

  1. The Scrub Rule Ledger facts, hashes, and outcomes are permanent. Only personally identifiable information may be scrubbed.

  2. Hashing at Ingestion All binary assets must be hashed (SHA-256) on receipt. The hash remains the permanent anchor even if the asset is later purged.

  3. Partitioned Heritage Data older than 24 months is moved to heritage partitions to preserve “Ferrari-class” performance for live execution.

6. One-Line Mental Model​

Foundation records what happened. Pro proves it happened correctly. Enterprise ensures it can never be disputed.