SafeReach · Terms of use and licence
Version 1.1 · 3 October 2026 · CE4U S.r.l. / RAVENG
English translation of the Italian terms, adapted to surveys of safety distances and protective-structure openings. These terms do not amend contracts or documents issued for other products.
1. Supplier and subject matter
CE4U S.r.l., trading as RAVENG, Italian tax and VAT number 04731920239, REA VR-444364, supplies SafeReach, its calculation engine and presentation templates. Address: Via G. Rossini 29/2, 37012 Bussolengo (VR), Italy. Email: info@raveng.it. Certified email: posta@pec.ce4u.it.
SafeReach is software for surveying openings and distances associated with machinery protective structures, using a photograph with a scale reference, LiDAR distance readings checked against a known length, or an instrument declared by the assessor. It calculates an arithmetic uncertainty budget, compares measurements numerically with a required value declared by the assessor after consulting the applicable standard, and produces a draft PDF report.
The contract concerns software. It is not an engagement for consultancy, risk assessment, an expert report, commissioning, calibration or verification of machinery or a guard. Installation, subscription and generation of results do not create a professional engagement with Carlo Tenca. Professional services require a separate engagement and approval referring to the exact document.
2. Acceptance and its record
Before using survey and calculation functions, the user can read these terms. The app collects one general acceptance through an option that is not selected in advance. General acceptance does not constitute specific approval of the clauses identified in section A. Refusal does not prevent access to information or consultation and export of the existing archive, subject to the purchased access rights described in section 9.
The local receipt records the declared name, optional organisation, declared capacity, version and SHA-256 fingerprint of the accepted text, software version and device-clock date. It does not authenticate identity, authority to represent an organisation or a legally certified date, and is not a qualified electronic signature. It records general acceptance only. It does not prove specific written approval where required by Articles 1341 and 1342 of the Italian Civil Code or these terms. Enforceability is not presumed from the local record alone. The receipt remains on the device and accompanies the survey package when the user exports it.
3. Intended users and capacity
Work on machinery and protective structures requires adulthood, competence in machinery safety, lawful access to the standards consulted, and authorisation from the person responsible for the site. “Assessor” means the user who performs the survey and declares the values. A person acting for an organisation declares that they are authorised; 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, restrictions and technical standards
The licence is personal and non-exclusive, for uses permitted by the distribution channel and applicable Apple rules. All uses permitted by mandatory law remain unaffected. Results, warnings, verification status, declared values, assessor identification and evidence must not be altered to attribute checks to the supplier or others that they have not performed. A name, professional title, signature, stamp or trade mark must not be used as evidence of approval without specific authorisation. Rights in software, educational material, illustrations and original texts remain with their respective owners; user data remain available to the user.
The app cites UNI EN ISO 13857:2020 and related EN ISO 13854, EN ISO 14120, EN ISO 14119, EN ISO 13855:2024 and EN ISO 12100 for reference. It does not include their tables or numerical required values; the included interlocked-guard formulas are those identified for EN ISO 13855:2024. No licence to a standard is granted. The app's illustrations are original geometric explanations, rather than reproductions of standard figures. “Consult the standard” identifies the source to consult; the app records the individual value declared by the assessor. Users must lawfully obtain the applicable edition and comply with its licence. References do not imply endorsement by ISO, CEN, UNI or any other organisation.
5. Safety during surveys
The user organises surveys in accordance with law, the manufacturer's instructions and site procedures. Placing a scale reference in an opening, positioning a phone against a protective structure or pointing towards a hazard zone must take place under conditions that prevent exposure to moving parts and other hazards, as assessed by the person responsible for the site. Do not insert body parts, phones or instruments into a hazard zone while machinery can move. Do not bypass, open or remove guards or interlocks solely to obtain a reading.
The software does not control or stop machinery, verify the status of protective devices, or replace protective devices and safe procedures. Responsibility follows conduct, duties and causation; exclusive user responsibility is not presumed. Photographs must show machinery, protective structures, openings and scale references, rather than people. Users are responsible for what they photograph.
6. Surveys, calculations and limitations
Results are automatic processing of user-acquired, entered or declared data. Readings, uncertainty estimates, declared values, margins, diagrams, illustrations, outcomes and exported files do not independently establish compliance with a standard or law, or machinery safety. A “positive numerical outcome”, “negative numerical outcome” or “not evaluated” result expresses only whether the declared measured value meets, does not meet or cannot be compared with the declared required value. A positive outcome does not authorise starting, restarting, commissioning, modifying or using machinery.
SafeReach is not a calibrated measuring instrument. The photographic and LiDAR methods have not been metrologically validated; no accuracy is declared or guaranteed. The uncertainty budget is an arithmetic sum of estimated contributions. Contributions marked UNCHARACTERISED, such as lens distortion without a check, are not included numerically and are not made harmless by a warning. The calculated uncertainty does not establish that all contributions have been characterised or included. LiDAR readings without a check against a known length in the same session are indicative and cannot produce a comparison.
Survey quality depends on the scale reference and its tolerance, coplanarity, camera perpendicularity, sharpness, exposure, edge contrast, position in the frame, operator checking and correction of edges, support surface and target point, instrument documentation, number and independence of repeated readings, reference-plane selection and identification of the most unfavourable hazard point.
The assessor declares the required value after consulting the applicable standard. The app does not contain, suggest, interpolate or verify it. Entering a value does not establish its correctness, applicability or provenance. Selection of the access case, table and row or column, treatment of intermediate values, risk level and applicability confirmations remain the assessor's responsibility.
Safety-distance standards address a defined population and do not cover every person. Some people may still reach the hazard zone. SafeReach does not determine whether distance alone sufficiently reduces risk or address hazards unrelated to reaching, such as emissions. It does not verify guard strength, fixings, containment, anchorage, design or interlocks and does not measure stopping times.
Missing data, examples, unverified values, insufficient repetitions, missing confirmations and simulated time-stamps are not definitive evidence. Warnings accompany results. Safety-related use requires independent verification of data and calculations, checks using an appropriate calibrated instrument, comparison with the official applicable standards and assessment by a competent professional. The app does not replace risk assessment under EN ISO 12100 or the duties of the manufacturer, integrator, employer or other responsible person.
7. User responsibilities
Users are responsible for activities attributable to them: organising and carrying out the survey, choosing and positioning the scale reference, declaring the instrument, confirming or correcting edges, entering data, consulting the standard and declaring the required value, choosing the access case and risk level, interpreting results, performing independent checks, retaining evidence and presenting results. Users must retain originals and warnings, correct errors and not conceal adverse conditions. A value may be declared as consulted only if actually read in the applicable current text. Users must promptly report anomalies and suspend use of doubtful results in safety decisions. This does not transfer the supplier's duties of proper design, information and maintenance to the user.
8. Draft reports and professional approval
Automatically generated documents are UNVALIDATED TECHNICAL DRAFTS. They record entered data, processing, warnings and declared values, without professional approval by CE4U or Carlo Tenca. No signatory is inserted by default. A typed name identifies the person declared by the user; it does not authenticate identity or turn a draft into a professionally approved report.
For each new generation, the assessor acknowledges the limitations and the duty not to present a draft as approved, as an expert report or as proof of compliance. The app does not require a false statement that every datum has already been verified. This declaration is recorded for the specific revision and is not a professional signature. Technical tools or integrations that do not collect the declaration produce drafts without an assessor declaration.
Professional review is a separate act identifying the reviewer, engagement, checks performed, limitations, date and exact approved files. Changing a name, removing a notice or checking a box cannot provide it. Earlier revisions remain preserved; an update neither cures nor re-signs older documents.
9. Prices and purchases
Learn and consultation of the Archive are free. Measure and Calculate require an Apple subscription. Only Base monthly and Base annual are offered. Both include all functions, all surveys, report generation, printing and export, without a separate report purchase. Prices for the Italian Store are €2.99 per month or €29.90 per year; other Stores follow Apple's currency and price schedule.
The price shown by Apple before purchase confirmation controls. Currency, applicable taxes, billing period and any trial are those displayed by Apple. A trial is available only when offered to an eligible account and for the displayed duration. Time-stamp requests have no separate charge.
Subscriptions renew automatically for the same period at the communicated price unless cancelled at least 24 hours before the period or trial ends. Management, cancellation and restoration are accessible in the app and Apple Account settings. Uninstalling does not cancel a subscription. Saved files remain consultable after expiry. Refunds, withdrawal and remedies follow Apple rules and mandatory law. Acceptance of these terms is not a purchase, consent to renewal or waiver of withdrawal rights. Any consent for early performance must be collected in the appropriate purchase process when legally required. No cloud service or guaranteed support level is promised.
10. Retention, integrity and time-stamps
SHA-256 fingerprints and a local technical signature support integrity checks within the limits of the available key and files. They do not establish data truth, assessor identity or survey correctness. A local signature protects the manifest when requested; it is not a qualified signature on the report. A verified RFC 3161 time-stamp with a reliable trust chain can provide evidence that data corresponding to a fingerprint existed by its stated time; it does not approve content. Pending or failed requests provide no such evidence. Simulated or test tokens are not independent time evidence; provider qualification is not presumed.
Users retain originals and backups. Data remain on the device unless voluntarily shared or transmitted through the specific flows described in the privacy notice. Time-stamp requests transmit fingerprints and technical connection data, rather than the files. Future services require terms and notices consistent with their actual processing.
11. Personal data
Survey photographs and data must be lawful, relevant and limited to what is necessary, respecting privacy and workplace rules. Photographs must not show identifiable people or readable third-party personal data; the app does not upload them to the supplier. The privacy notice is separate. Acceptance of these terms is not general privacy consent. The app privacy notice covers local receipts, whose inclusion in an exported package is visible to the assessor.
12. Standards and verification
Users must verify the official text, edition, national adoption, scope, applicable type-C standard and relevant harmonisation status. References carry a verification status: verified, secondary source or NOT VERIFIED. A verified status does not establish applicability to a particular case. Software tests and reference-case checks do not replace professional verification of algorithms and references against official texts.
13. Warranties and mandatory safeguards
No promise is made of acceptance by authorities, inspectors, clients or insurers, absolute absence of errors or suitability for every particular use. A numerical outcome is not promised to establish compliance. Contractually due performance and all applicable legal warranties, including consumer digital-content and digital-service rights, remain unaffected. Errors in software, formulas, documentation, updates or presentation attributable to the supplier are not automatically transferred to the user.
14. Limitation of liability: professional relationships only
14.1 Only in professional-user relationships, subject to valid specific approval and within legal limits, the supplier's contractual liability for slight negligence in respect of purely financial damage arising from software use, calculations or presentation is excluded. Mandatory duties and liabilities are unaffected. There is no automatic zero liability cap for a user who has paid no fee.
14.2 No exclusion, limitation or indemnity covers supplier or auxiliary fraud or gross negligence; breach of mandatory public-policy duties, including health and safety; death or personal injury; mandatory defective-product liability; mandatory consumer rights and warranties; or any other liability that cannot validly be limited. Personal criminal, administrative and disciplinary liabilities are not cancelled or transferred.
14.3 No clause prevents action by workers, clients, injured persons, authorities or other third parties not bound by the contract. Concurrent responsibility remains governed by law. Late notifications do not create contractual forfeitures or reverse the burden of proof. Article 1227 of the Italian Civil Code applies where its conditions are met.
14.4 Section 14.1 does not apply to consumers. The safeguards in 14.2 and 14.3 prevail over all other provisions.
15. Indemnity: conduct attributable to professional users only
15.1 Subject to valid specific approval, a professional user indemnifies CE4U and persons acting for it, including Carlo Tenca only within their actual software-supply role, against third-party compensation 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. This includes false or altered data; falsely claiming consultation of required values; false declarations about references or instruments; breach of safety instructions; concealment of warnings; presenting drafts or examples as approved or compliant; unauthorised use of names or signatures; and unlawful surveys, photographs or personal-data processing.
15.2 The indemnity does not cover damage attributable to the beneficiary or their auxiliaries, attributable software defects, separately undertaken professional services, the safeguards in 14.2, personal criminal, administrative or disciplinary penalties, or legally non-transferable duties. Software use or an unfavourable result alone does not trigger indemnity. It does not apply to consumers or deprive third parties of rights.
15.3 The beneficiary promptly provides the claim and documents, permits participation in the defence and reasonably mitigates damage. Indemnification requires responsibility and its share to be established by a final decision or written agreement among those concerned. No settlement binds the indemnifying party without written consent; no admission or obligation can be imposed on the beneficiary without consent. Costs must not be duplicated or disproportionate.
16. Cessation and archive
Stopping use or refusing new terms does not delete files or prevent access to the local archive. Users manage subscriptions separately through Apple. Statutory withdrawal, refunds and remedies remain unaffected.
17. New versions
Changes require renewed acceptance of the identified version and are not retroactive. Material changes to ongoing contracts require prior information and respect for statutory remedies.
18. Reports of problems
Technical issues: info@raveng.it. Legal notices: posta@pec.ce4u.it. Before sharing photographs, reports or packages, minimise unnecessary personal and confidential information and check that no person is identifiable. No continuous monitoring of users' surveys is promised.
19. Law and disputes
Italian law applies without prejudice to mandatory applicable law, including consumer protection in the user's habitual residence. Jurisdiction follows law; no exclusive waiver of the consumer's lawful forum is imposed.
20. Interpretation
These terms originate in Italian; this English version is provided for accessibility. The acceptance receipt identifies the actual accepted version and fingerprint. Nothing promises total indemnity or immunity. An ineffective clause is not automatically replaced by a broader exemption; relevant law applies. These terms do not attest that legal review, metrological validation or insurance verification has occurred.
A. General acceptance and its limits
The app collects general acceptance only; it neither requests nor records specific approvals of sections 14.1 and 15.1–15.3. Valid specific approval requirements under those clauses and law remain applicable. General acceptance and its receipt do not replace them or establish effectiveness of limitations or indemnity. The selection is a local declaration rather than a qualified signature or proof of identity. Sections 14.2–14.4 and 15.2–15.3 remain effective; professional-user clauses do not apply to consumers.
B. Apple distribution
The contract is between the user and CE4U, not Apple. CE4U is responsible for software maintenance and support; Apple does not undertake those obligations. The licence covers Apple devices owned or controlled by the user under Apple Media Services rules, including permitted sharing. For failure to meet an applicable warranty, the user may notify Apple for refund of the app purchase price; within legal limits Apple has no further warranty obligation and other claims are addressed to CE4U. Product, legal-compliance, consumer, privacy and intellectual-property claims are addressed to CE4U, subject to applicable law. Users comply with third-party service terms and represent that they are not in a US-embargoed territory or a territory designated as supporting terrorism, or on a US prohibited-party list. Apple and its affiliates are third-party beneficiaries and may enforce these terms. Supplier contacts are in section 1. No provision conflicts with mandatory App Store rules or reduces mandatory rights.