# StopTime - Terms of Use and Licence Version 2.1 - 30 September 2026 - CE4U S.r.l. / RAVENG English translation of the Italian version 2.1. This translation does not introduce additional exclusions, approvals or waivers. Status: text prepared for legal review before commercial distribution. Replaces version 2.0; it does not retrospectively amend previous contracts or reports. ## 1. Supplier and Subject Matter CE4U S.r.l., trading under the RAVENG brand, VAT / Tax ID 04731920239, REA VR-444364, supplies StopTime, its processing engine and presentation templates. Contact address: Via G. Rossini 29/2, 37012 Bussolengo (VR), Italy; info@raveng.it; certified email (PEC) posta@pec.ce4u.it. These contact details do not establish the registered office: company details and pre-contractual information must be verified and completed before publication. The contract concerns software, not an engagement for consultancy, an expert report, acceptance testing, calibration or certification of a machine. Installing the app, subscribing or generating results does not engage engineer Carlo Tenca. Professional services require a separate engagement and approval referring to the exact document. ## 2. Acceptance and Evidence of Acceptance The user can read these terms before accessing measurement and calculation functions. The app collects a single general acceptance through a selection that is not preselected. This acceptance does not constitute specific approval of the clauses identified in Section A. Declining does not prevent access to or export of the existing archive, or access to informational content. The local receipt records the declared name, optional organisation, declared capacity, text version and SHA-256 hash, software version and device-clock date. It does not authenticate identity, authority to represent an organisation or a legally certain date; it is not a qualified signature. It records general acceptance only and does not establish specific written approval of clauses requiring it under Articles 1341 and 1342 of the Italian Civil Code or this contract. Enforceability of clauses is not presumed from the log alone. ## 3. Intended Users and Legal Status Use on machines requires adulthood, technical competence, lawful access to the relevant standards 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 the law, not on the selection made in the interface. 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 arrangements and Apple rules where applicable. All uses permitted by mandatory law remain unaffected. Results, warnings, operator identification or evidence must not be altered to attribute checks that were never performed to the supplier or third parties. A name, professional title, signature, stamp or trademark must not be used as evidence of machine approval without specific authorisation. Software rights remain with their respective holders; the user's data remain under the user's control. ## 5. Test Safety The user organises tests in accordance with applicable law, the manufacturer's instructions and site procedures. They must not expose people to moving parts, insert body parts into the danger zone or bypass guards and interlocks. They must assess test risks and use suitable test pieces. The software neither controls nor stops the machine and does not replace safety devices or procedures. Responsibility is allocated according to conduct, obligations and causation, not a presumption that the user is exclusively responsible. ## 6. Measurements, Calculations and Limitations Results are automatic processing outputs derived from acquired or entered data. Times, uncertainties, distances, margins, charts, tables, outcomes and exported files do not independently establish conformity or safety. A positive numerical outcome means only that the values and assumptions used satisfy the implemented comparison. It does not authorise starting, restarting, commissioning or modifying the machine. Quality depends, among other things, on video frame rate and integrity, exposure, rolling shutter, frame selection, trigger and indicator latency relative to the outputs, the timing of the complete stopping chain, test conditions, repetitions, distances, geometry and the applicable standard. A conservative substitute does not, by itself, demonstrate that an unknown delay is covered. Calculated uncertainty does not demonstrate that every contribution has been characterised or included. Missing data, examples, unverified parameters, insufficient repetitions and simulated timestamps must not be treated as definitive evidence. Warnings always accompany results. Before any safety-related use, independent verification of the data and calculations, metrological comparison appropriate to the case and assessment by a competent professional are required. The software does not replace risk assessment or the statutory obligations of manufacturers, integrators, employers or other responsible persons. ## 7. User Obligations The user is responsible for activities attributable to them: acquiring and entering data, selecting parameters and the standard edition, interpretation, independent checks, retaining evidence and presenting results. They must retain originals and warnings, correct errors and not conceal adverse conditions. They must promptly report anomalies and suspend use of doubtful results for safety decisions. This does not transfer the supplier's obligations concerning proper design, information and maintenance to the user. ## 8. Reports and Professional Approval Automatically generated documents are UNVALIDATED TECHNICAL DRAFTS. The operator's name is declared by the user, not certified. CE4U / RAVENG appears solely as the software supplier. Documents are not verified, approved or signed by engineer Carlo Tenca merely because they were generated with StopTime. Before each new generation in the app, the operator acknowledges the limitations and the obligation not to present the draft as approved. The operator is not asked to state falsely that every item of data has already been verified. The declaration is recorded with the specific revision; it is not a professional signature. Technical tools or integrations that do not collect this declaration produce only drafts without an operator declaration. Any professional review is a separate act identifying the reviewer, engagement, checks performed, limitations, date and unique reference to the approved files. It cannot be obtained by changing a name, removing a watermark or selecting a checkbox. Earlier revisions remain retained; new software does not remedy or re-sign old documents. ## 9. Prices and Purchases Included functions, prices, duration, renewal and subscription cancellation are those displayed in the purchase flow before confirmation. These terms do not promise a Studio plan, cloud service, fee or support level. Apple purchases are also subject to the platform's terms, without reducing mandatory rights. Acceptance of these terms does not constitute a purchase, consent to renewal or waiver of withdrawal rights. Any consent for early performance of digital content or services must be collected separately where and as required by law. ## 10. Retention, Integrity and Electronic Timestamps Hashes and a local technical signature enable integrity checks within the limits of the available key and files; they do not prove the truth of the data, the professional's identity or measurement correctness. The local signature, if requested, protects the manifest: it is not a qualified signature of the report. An electronic timestamp does not approve content. Simulated, localhost or TEST-ONLY tokens are not independent time attestations; provider qualification is not presumed. The user retains original copies and backups. Data remain local except for voluntary sharing or specific functions disclosed in the privacy notice, including timestamp requests that transmit hashes. Any future service will require terms and a privacy notice consistent with the actual processing. ## 11. Personal Data Recordings must be lawful, relevant and limited to what is necessary, in accordance with data protection and workplace rules. The privacy notice remains separate: accepting these terms is not general consent to processing. The clarifications in document 02 apply to local receipt data; their export in the report package is visible to the operator. ## 12. Standards and Verification References to standards do not constitute approval by standardisation bodies. The user must verify the official text, edition, scope and relevant harmonisation status. Software checks and tests using synthetic data do not replace independent metrological validation on real devices and machines. ## 13. Warranties and Mandatory Reservations No promise is made of machine certification, acceptance of results by authorities or insurers, complete absence of errors or suitability for every particular use. Contractually owed performance and all applicable statutory warranties remain unaffected, including conformity of digital content and services supplied to consumers. Errors in software, 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 relationships with professional users, subject to valid specific approval and to the extent permitted by law, the supplier's contractual liability for ordinary negligence in relation to purely economic loss arising from software use, calculations or presentation of results is excluded. This does not apply to mandatory obligations or liabilities. No automatic zero liability cap is established for users who have paid no fees. 14.2 In all cases, the following are EXCLUDED from any release, limitation or indemnity: wilful misconduct or gross negligence of the supplier or persons assisting it; breach of obligations arising from public-policy rules; death and personal injury; defective-product liability where and to the extent applicable law makes it mandatory; mandatory consumer warranties and rights; and other liabilities that cannot validly be limited. Personal criminal, administrative and disciplinary liability is not cancelled or transferred by the contract. 14.3 No clause prevents claims by workers, clients, injured parties, authorities or other third parties not bound by the contract. Any concurrent liability remains governed by law. Late reporting does not create contractual forfeiture of rights or reverse the burden of proof; Article 1227 of the Italian Civil Code remains applicable where its requirements are met. 14.4 The exclusion in Section 14.1 does not apply to consumers. The safeguards in Sections 14.2 and 14.3 prevail over every other provision. ## 15. Indemnity: Conduct Attributable to the Professional User Only 15.1 Subject to valid specific approval, the professional user indemnifies CE4U and persons acting for it, including engineer Carlo Tenca solely in respect of the role actually performed in supplying the software, 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; failure to follow safety instructions; concealment of warnings; presenting drafts or examples as approved; unauthorised use of names or signatures; or unlawful testing or recording. 15.2 The indemnity does not cover the share of loss attributable to the beneficiary or persons assisting it, software defects attributable to them, separately undertaken professional services, the reservations in Section 14.2, personal criminal, administrative or disciplinary penalties, or obligations that cannot legally be transferred. Mere use of the software or an adverse result does not trigger the indemnity. It does not apply to consumers and does not deprive third parties of any rights. 15.3 The beneficiary promptly communicates the claim and documents, permits participation in the defence and reasonably mitigates loss. Indemnification requires determination of liability and the relevant share through a final decision or written agreement between the parties concerned. No settlement binds the person asked to indemnify without their written consent; no admission or obligation may be imposed on the beneficiary without their consent. Costs must not be duplicated or disproportionate. ## 16. Termination and Archive Stopping use or declining new terms does not delete files or prevent access to the local archive. The user manages any subscription separately through the platform. Statutory withdrawal, refund and other remedies remain unaffected. ## 17. New Versions Changes to the terms require new acceptance of the identified version. They do not operate retrospectively. Material changes to existing contracts require prior information and compliance with statutory remedies. ## 18. Reports and Notices Technical anomalies: info@raveng.it. Legal notices: posta@pec.ce4u.it. Before sharing videos, minimise unnecessary personal data and confidential information. Continuous monitoring of the user's measurements is not promised. ## 19. Governing Law and Disputes Italian law applies, without prejudice to applicable mandatory provisions, including those protecting consumers in their habitual place of residence. Jurisdiction follows the law: no exclusive departure from the consumer's forum is imposed. ## 20. Interpretation No provision promises a total indemnity or immunity. An ineffective clause is not automatically replaced by a broader exclusion; the relevant statutory rules apply. These terms do not attest that legal, metrological or insurance validation has already taken place. ## A. General Acceptance and Limitations The app collects only general acceptance of the terms and does not request, or attest that the user has given, specific approval of Sections 14.1 and 15.1–15.3. The requirements for valid specific approval in Sections 14.1 and 15.1–15.3 and those imposed by law remain applicable. General acceptance and its receipt do not replace them: enforceability of the liability limitations or indemnity is not presumed from them. The selection records a local declaration, not a qualified signature or certain proof of identity. All reservations in Sections 14.2–14.4 and 15.2–15.3 remain applicable; 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 the software, maintenance and support; Apple assumes no such obligations. The licence covers Apple devices owned or controlled by the user in accordance with Apple Media Services 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 CE4U's responsibility. Claims concerning the product, legal requirements, consumers, privacy and intellectual property are directed to CE4U, not Apple, subject to applicable law. The user complies with third-party service terms and represents that they are not in a territory subject to a United States embargo or designated as supporting terrorism, or on a United States list of prohibited or restricted parties. Apple and its affiliates are third-party beneficiaries and may enforce these terms. Supplier contact details are in Section 1. No provision conflicts with mandatory App Store rules or reduces mandatory rights.