Version 1.2 - 2 October 2026 - CE4U S.r.l. / RAVENG
1. Provider and subject matter
CE4U S.r.l., trading as RAVENG, Italian VAT and tax number 04731920239, REA VR-444364, supplies ErgoTime, its calculation engine and presentation templates. Registered office: Via G. Rossini 29/2, 37012 Bussolengo (VR), Italy; info@raveng.it; certified email (PEC): posta@pec.ce4u.it. Company information is also available in the legal notice at raveng.it.
This agreement concerns software, not a professional engagement for consultancy, risk assessment, an expert report, occupational health surveillance, or certification of a workstation, task, machine or organisation. Installation, subscription or generation of results does not engage Carlo Tenca as an engineer. Professional services require a separate engagement and approval identifying the exact document concerned.
2. Acceptance and its evidential limits
Users can read these terms before accessing assessment and calculation functions. The app collects one general acceptance through an initially unselected control. This is not specific approval of the clauses identified in Appendix A. Refusal does not prevent access to learning content or consultation and export of the existing archive.
The local receipt records the declared name, optional organisation, declared capacity, version, language and SHA-256 digest of the accepted text, software version and device-clock date. It does not authenticate identity, authority to represent an organisation or a legally certain date, and is not a qualified signature. It records general acceptance only; it does not establish specific written approval where Articles 1341 and 1342 of the Italian Civil Code or this agreement require it. Enforceability is not presumed solely from this record.
3. Intended users and capacity
Assessment of work tasks requires an adult user with technical competence in ergonomics and occupational safety, lawful access to the standards consulted and authorisation from the person responsible for the site. Anyone acting for an organisation declares that they are authorised, although the software cannot verify this. Consumer status depends on the actual circumstances and applicable law, rather than an interface selection. Clauses reserved for professional users do not apply to consumers.
4. Licence and restrictions
The licence is personal and non-exclusive, for use permitted by the distribution terms and Apple rules where applicable. Uses permitted by mandatory law remain unaffected. Users must not alter results, warnings, verification status, assessor identification or evidence to attribute checks to the provider or third parties that they have not performed. Names, professional titles, signatures, stamps or brands must not be presented as approval of an assessment without specific authorisation. Rights in the software, learning content, diagrams and original text remain with their respective owners; users retain control of their data.
The software implements documented formulas and criteria from public-domain methods (NIOSH) or open-licensed material (HSE, Open Government Licence v3, with attribution) and cites ISO, UNI and EN standards. It does not grant a licence to standards publications. The app does not embed ISO, UNI or EN tables, matrices, curves or checklists. Arithmetic comparisons use only user-declared values and sources, without generating normative limits. The original preliminary record does not determine normative acceptability. Availability of a source or verification of a value does not establish permission to reproduce it. Users must lawfully obtain the editions they consult. References do not imply endorsement by standards bodies or authorities publishing the methods.
5. Safe surveys and protection of people
Users must organise surveys in accordance with applicable law, site procedures and the instructions of responsible personnel. They must not require unsafe handling, loads beyond people's capabilities or unsafe trials solely to collect data. The software does not control equipment, measure forces or masses, or replace safety devices, procedures or calibrated measuring instruments. Responsibilities depend on conduct, duties and causation; exclusive user responsibility is not presumed.
Photographs must show workstations, equipment and loads, rather than identifiable people. Users must not enter workers' names, identifiers or health information in the app. The software neither requires nor is designed to process such information.
6. Assessments, calculations and limitations
Results are automatic processing of data observed, measured, counted, consulted or declared by the user. Recommended limits, lifting and composite indices, cumulative masses, risk indices, scores, force-to-limit ratios, sensitivity ranges, diagrams, outcomes and exported files do not independently establish compliance, absence of risk or task acceptability. A positive numerical outcome means only that the values and assumptions used satisfy the implemented comparison for the stated method. It is not a fitness-for-work decision, medical conclusion, certification under Italian Legislative Decree 81/2008, the ISO 11228 series, EN 1005 or machinery legislation, or a complete risk assessment.
Quality depends, among other things, on accurate dimensions and masses; representative observation windows and frequency counts; classification of coupling, postures and conditions; population and reference-mass selection; declared duration and recovery; the standard's edition and values consulted in its tables; and the method's scope. The software identifies verification status. Declared values are identified in warnings and reports. Entering a value does not verify its correctness, applicability or provenance; these checks remain the user’s responsibility. Previously archived documents retain their original content and must be reviewed before reuse. Observational sensitivity ranges are not metrological uncertainty and do not demonstrate that every contribution has been characterised.
Missing data, examples, unverified values, insufficient observations, out-of-scope tasks and simulated timestamps must not be treated as definitive evidence. Warnings accompany results. Before use in risk assessment, independently check inputs and calculations, consult the official applicable standards and obtain a competent professional assessment. The software does not replace employers' risk assessments, occupational physicians' health surveillance, manufacturers' or integrators' machinery obligations, or the duties of other legally responsible parties.
7. User obligations
Users are responsible for activities attributable to them: surveys, measurements and weighing, frequency counts, data entry, selection of method, population, standard edition and consulted values, interpretation, independent checks, evidence retention and presentation of results. They must retain originals and warnings, correct errors and disclose adverse conditions. They must report anomalies promptly and stop relying on doubtful results for risk-assessment decisions. This does not transfer the provider's duties concerning sound design, information and maintenance to the user.
8. Reports and professional approval
Automatically generated documents are UNVALIDATED TECHNICAL DRAFTS. The assessor's name is declared by the user, not certified. CE4U / RAVENG is identified solely as the software provider. Generation with ErgoTime does not mean that Carlo Tenca has checked, approved or signed the document as an engineer.
Before generating a new report, the assessor acknowledges the limitations and the duty not to present the draft as approved, as a fitness-for-work decision or as a compliance certificate. The assessor is not asked to falsely declare that every input has already been verified. The declaration is linked to that revision and is not a professional signature. Technical tools or integrations that do not collect it produce drafts without an assessor's declaration.
Any professional review is a separate act identifying the reviewer, engagement, checks, limitations, date and exact approved files. It cannot be obtained by changing a name, removing a watermark or selecting a checkbox. Previous revisions are retained; new software does not retrospectively validate or sign earlier documents.
9. Prices and purchases
Learn and archive consultation remain free. The only plans are Base monthly: €2.99 per month and Base annual: €29.90 per year, reference prices for the Italian storefront. Both unlock all app functions, including assessments, calculators and report generation and export, without an additional purchase per report. No other plans are offered. Previously archived files remain accessible and exportable after expiry.
The actual price, currency, applicable taxes, billing period and any free trial are those displayed by Apple before confirmation. Other storefronts may display different prices and currencies; changing the app language does not change the storefront. A trial is available only when Apple offers it to an eligible account, for the duration shown in the purchase flow.
Subscriptions renew automatically for the same period at the communicated price unless cancelled at least 24 hours before the current period or trial ends. Renewal may be charged during the preceding 24 hours. Management, cancellation and restoration are accessible from the app and Apple Account settings. Uninstalling the app does not cancel a subscription. Refunds and withdrawal follow Apple rules and applicable mandatory rights. Accepting these terms is not a purchase, consent to renewal or waiver of withdrawal. Any consent required for early performance must be obtained through the appropriate process, where and as required by law.
10. Retention, integrity and timestamps
Digests and local technical signatures support integrity checks within the limits of the available keys and files. They do not establish truth of data, a professional's identity or assessment accuracy. A requested local signature protects the manifest and is not a qualified signature of the report. A verified RFC 3161 token with an appropriately trusted certificate chain may support evidence that data matching the digest existed by the stated time; it does not approve their content. Pending or failed requests provide no such evidence. Simulated, localhost or TEST-ONLY tokens are not independent time attestations. A provider's qualified status is not presumed.
Users must retain originals and backups. Data remain local except for voluntary sharing and the functions described in the privacy notice, including timestamp requests transmitting digests. Any future service requires terms and privacy information consistent with its actual processing.
11. Personal data
Survey photographs and data must be lawful, relevant and limited to what is necessary, respecting data protection and workplace rules. Photographs must not show identifiable people; the app does not upload them to the provider. The privacy notice is separate: acceptance of these terms is not general consent to data processing. The app's privacy notice explains local receipts; their inclusion in exported report packages is visible to the assessor.
12. Standards and verification
References to standards and methods do not imply endorsement by standards bodies, NIOSH or HSE. Users must check official texts, editions, national adoption, scope and relevant harmonisation status. Software checks and reference-case tests do not replace professional verification of algorithms, translations and thresholds against official texts.
13. Warranties and mandatory safeguards
The provider does not promise compliance of a workstation or task, acceptance by authorities, inspectors, occupational physicians or insurers, absolute freedom from errors, or suitability for every particular purpose. Contractually required performance and applicable statutory warranties remain unaffected, including consumer rights concerning conformity of digital content and services. Software, formula, documentation, update or presentation errors attributable to the provider are not automatically transferred to the user.
14. Limitation of liability: professional relationships only
14.1 Only in dealings with professional users, subject to valid specific approval and to the extent permitted by law, the provider's contractual liability for ordinary negligence concerning purely financial loss arising from software use, calculations or presentation of results is excluded. This does not cover mandatory duties or liabilities. No automatic zero liability cap applies merely because a user has paid no fee.
14.2 All exclusions, limits and indemnities expressly exclude: intentional misconduct and gross negligence by the provider or its assistants; breaches of duties arising from public-policy rules, including occupational health and safety; death and personal injury; mandatory liability for defective products where applicable; mandatory consumer rights and guarantees; and any other liability that cannot validly be limited. Personal criminal, administrative and disciplinary responsibilities are neither removed nor transferred by this agreement.
14.3 No clause prevents claims by workers, customers, injured parties, authorities or other third parties not bound by the agreement. Contributory liability remains governed by law. Late reporting does not create contractual forfeiture or reverse the burden of proof. Article 1227 of the Italian Civil Code applies where its conditions are met.
14.4 The exclusion in 14.1 does not apply to consumers. The safeguards in 14.2 and 14.3 prevail over any other provision.
15. Indemnity: conduct attributable to professional users only
15.1 Subject to valid specific approval, professional users indemnify CE4U and those acting for it, including Carlo Tenca solely in his actual software-supply role, against third-party damages claims and reasonable, documented defence costs only to the extent causally attributable to negligent or intentional conduct by the user or persons for whom the user is responsible: false or altered data; values falsely declared as consulted; disregard of safety instructions; concealment of warnings or verification status; presentation of drafts or examples as approved, as fitness-for-work decisions or as compliance certificates; unauthorised use of names or signatures; or unlawful surveys, photographs or processing of workers' data.
15.2 The indemnity does not cover loss attributable to the beneficiary or its assistants, software defects attributable to them, separately undertaken professional services, the safeguards in 14.2, personal criminal, administrative or disciplinary penalties, or legally non-transferable duties. Merely using the software or obtaining an adverse outcome does not trigger the indemnity. It does not apply to consumers and removes no third-party rights, including workers' rights.
15.3 The beneficiary must promptly communicate the claim and supporting documents, allow participation in the defence and reasonably mitigate loss. Indemnification requires responsibility and its share to be established by a final decision or written agreement between the parties concerned. No settlement binds the indemnifying party without written consent; no admission or obligation may be imposed on the beneficiary without its consent. Costs must not be duplicated or disproportionate.
16. Termination and archive
Stopping use or refusing new terms does not delete files or prevent access to the local archive. Users must manage any subscription separately through the platform. Statutory withdrawal, refunds and remedies remain unaffected.
17. New versions
Changes to the terms require new acceptance of the identified version and do not apply retrospectively. Material changes to ongoing agreements require prior information and compliance with statutory remedies.
18. Reporting issues
Technical issues: info@raveng.it. Legal communications: posta@pec.ce4u.it. Before sharing photographs, reports or packages, minimise unnecessary personal and confidential information and check that no person is identifiable. Continuous monitoring of users' assessments is not promised.
19. Governing law and disputes
Italian law applies without prejudice to applicable mandatory rules, including consumer protection in the consumer's habitual place of residence. Jurisdiction follows the law; no exclusive derogation from the consumer's statutory forum is imposed.
20. Interpretation and languages
These terms are available in Italian and English. The receipt identifies the language and digest of the text actually accepted. Changing the interface language alone does not alter an existing acceptance. The translations aim to express the same rights and duties; any discrepancy is interpreted under applicable law without reducing mandatory protections.
No provision promises complete indemnity or immunity. An ineffective clause is not automatically replaced by a broader exemption; applicable law governs. These terms do not establish that legal, scientific or insurance validation has already occurred.
A. General acceptance and limitations
The app collects only general acceptance and neither requests nor records specific approval of Articles 14.1 and 15.1–15.3.
The requirements for valid specific approval in those provisions and applicable law remain in force. General acceptance and its receipt do not replace them and do not establish that liability limitations or indemnities are enforceable.
The selection records a local declaration, not a qualified signature or certain proof of identity. All safeguards in 14.2–14.4 and 15.2–15.3 remain applicable. Professional-user clauses do not apply to consumers.
B. Apple distribution
The agreement is between the user and CE4U, not Apple. CE4U is responsible for the software, maintenance and support; Apple assumes no such duties. The licence covers Apple devices owned or controlled by the user as permitted by the Apple Media Services usage rules, including permitted sharing. If the app fails to conform to an applicable warranty, the user may notify Apple for a refund of the app purchase price. To the extent permitted by law, Apple has no further warranty obligations and other claims are addressed to CE4U. Claims concerning the product, legal requirements, consumer protection, privacy and intellectual property are addressed to CE4U rather than Apple, subject to applicable law. Users must comply with third-party service terms and represent that they are not in a country subject to a US embargo or designated as supporting terrorism, or on a US list of prohibited or restricted parties. Apple and its affiliates are third-party beneficiaries entitled to enforce these terms. Provider contact details appear in section 1. No provision conflicts with mandatory App Store rules or reduces mandatory rights.