Terms of Service

By accessing or using Sinuose (“the Service”), you agree to be bound by these Terms of Service (“Terms”). If you do not agree to these Terms, you may not use the Service. We reserve the right to update or modify these Terms at any time. Your continued use of the Service after any changes constitutes acceptance of the revised Terms.

Sinuose is an audio enhancement web and mobile application that allows users to upload MP3 audio files and apply professional-grade processing enhancements. The Service includes audio equalization, compression, loudness normalization, and stereo enhancement using deterministic digital signal processing algorithms powered by FFmpeg. The Service also provides a personal library for storing enhanced tracks, social features for connecting with other producers, and subscription-based premium tiers with additional capabilities.

To use certain features of the Service, you must create an account. You agree to: • Provide accurate, current, and complete information during registration • Maintain and promptly update your account information • Maintain the security of your account credentials • Accept responsibility for all activities that occur under your account • Notify us immediately of any unauthorized use of your account You must be at least 13 years of age to create an account and use the Service. By creating an account, you represent that you meet this age requirement.

Sinuose offers a free tier and a paid Premium subscription. The Premium plan is billed weekly at $2.99/week. Paid subscriptions are processed through Apple's In-App Purchase system (for iOS) or through our payment processor Adapty. Free Trial: New Premium subscribers may be eligible for a 3-day free trial. The trial begins when you subscribe and automatically converts to a paid subscription at the end of the trial period unless cancelled. Each user is eligible for one free trial only. Auto-Renewal: Premium subscriptions automatically renew at the end of each weekly billing period unless cancelled before the renewal date. The subscription fee will be charged to your payment method on file. Cancellation:You may cancel your subscription at any time through your Apple device settings (Settings → Apple ID → Subscriptions) or through the applicable platform's subscription management. Cancellation takes effect at the end of the current billing period — you will retain access to Premium features until then. Refunds:Refund requests for subscriptions purchased through Apple are subject to Apple's refund policy. We do not process refunds directly for In-App Purchases. Price Changes: We reserve the right to change subscription prices. Existing subscribers will be notified in advance of any price changes, and the new price will apply at the next renewal date. VAT and Taxes: For consumers in the European Union, the price displayed is the final price payable and is inclusive of any applicable value added tax (VAT / moms). VAT is collected and remitted by Apple as the merchant of record for In-App Purchases, at the rate applicable in your country of residence. Prices displayed outside the EU may exclude local sales tax, which is added at checkout where required. Immediate Delivery and Right of Withdrawal (EU Consumers):Premium is digital content supplied immediately. By starting a subscription or free trial you expressly request that we begin performance immediately, and you acknowledge that you thereby lose your 14-day right of withdrawal (fortrydelsesret) once delivery has begun, in accordance with the Danish Consumer Contracts Act (forbrugeraftaleloven § 18(2)(13)) implementing the EU Consumer Rights Directive. If you have not yet accessed any Premium feature, you may still withdraw within 14 days by contacting support@sinuose.app.

Ownership: You retain all ownership rights to the audio files you upload to Sinuose. We do not claim any ownership of your content. By uploading audio files, you grant us a limited, non-exclusive license to process, store, and transmit your content solely for the purpose of providing the Service to you. Responsibility:You represent and warrant that you have all necessary rights, licenses, and permissions to upload and process the audio files you submit. You are solely responsible for ensuring that your use of the Service does not infringe upon any third party's intellectual property rights, including copyrights. Public Tracks: If you choose to make tracks public on your profile, other users will be able to listen to them. You may change the visibility of your tracks at any time. We are not responsible for any copyright infringement committed by users of the Service. Copyright Complaints (Notice and Takedown): If you believe content on Sinuose infringes your copyright, send a notice to support@sinuose.app containing: (a) your name and contact details; (b) identification of the work you claim is infringed; (c) the URL or track identifier of the material in question; (d) a statement that you have a good-faith belief the use is not authorised by the rights holder or the law; (e) a statement, made under penalty of perjury, that the information is accurate and that you are the rights holder or authorised to act for them; and (f) your physical or electronic signature. We review complete notices and remove or disable access to infringing material without undue delay. We may also terminate the accounts of repeat infringers. If your content is removed, you may submit a counter-notice to the same address.

You agree not to: • Upload files containing malware, viruses, or malicious code • Attempt to circumvent usage limits, subscription restrictions, or access controls • Reverse engineer, decompile, or disassemble any part of the Service • Use the Service to process audio for illegal purposes • Use automated scripts, bots, or other means to access the Service in bulk • Impersonate another user or create fake accounts • Interfere with or disrupt the integrity or performance of the Service • Attempt to gain unauthorized access to the Service or its related systems

The Sinuose name, logo, visual design, user interface, and underlying code are the property of Sinuose and are protected by applicable intellectual property laws. You may not copy, modify, distribute, or create derivative works based on any part of the Service without our prior written consent. The audio processing algorithms and enhancement modes are proprietary to Sinuose. The results of audio enhancement (your enhanced files) belong to you, but the processing technology itself remains our intellectual property.

To the maximum extent permitted by applicable law, Sinuose and its owner shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to loss of data, loss of revenue, or loss of business, arising out of or in connection with your use of the Service. Our total liability to you for any claim arising from or related to this Agreement shall not exceed the amount you paid us in the 12 months preceding the claim, or DKK 100, whichever is greater. EU USERS:Nothing in this section limits liability for death or personal injury caused by negligence, fraud, or any other liability that cannot be excluded under applicable EU or Danish law, including the Danish Sale of Goods Act (købeloven) and the Danish Consumer Contracts Act (forbrugeraftaleloven).

The Service is provided “AS IS” and “AS AVAILABLE” without warranties of any kind, either express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, or non-infringement. We do not warrant that: (a) the Service will be uninterrupted or error-free; (b) the audio enhancement results will meet your specific requirements or expectations; (c) any defects will be corrected. EU USERS: Statutory consumer rights under Danish and EU law are not affected by this disclaimer. If you are a consumer in the EU, you retain all rights provided by the Consumer Sales Directive and applicable national law.

You agree to defend, indemnify, and hold harmless Sinuose and its owner from and against any claims, damages, obligations, losses, liabilities, costs, and expenses arising from: (a) your use of the Service; (b) your violation of these Terms; (c) your violation of any third-party rights, including intellectual property rights; (d) any content you upload, including audio files. This indemnification obligation survives termination of these Terms.

We may suspend or terminate your access to the Service immediately, without prior notice, if you: (a) violate these Terms; (b) engage in fraudulent or abusive behavior; (c) attempt to circumvent subscription limits or payment systems; (d) upload content that violates third-party intellectual property rights. You may terminate your account at any time by contacting support@sinuose.app or through your account settings (Settings → Danger Zone → Delete Account). Upon termination: (a) your right to use the Service ceases immediately; (b) you remain liable for any outstanding payments; (c) we may delete your data in accordance with our Privacy Policy. EU USERS: If you are a consumer, you have the right to withdraw from a subscription within 14 days of purchase under EU consumer protection law (the right of withdrawal / fortrydelsesret), unless digital content delivery has already begun with your explicit consent. Sections 5, 7, 8, 9, 10, 12, and 14 shall survive any termination of these Terms.

These Terms are governed by and construed in accordance with the laws of Denmark, without regard to conflict of law principles. Any disputes arising from these Terms or the Service shall first be attempted to be resolved through good-faith negotiation. If unresolved within 30 days, disputes shall be submitted to the Danish courts, with the City Court of Copenhagen (Københavns Byret) as the court of first instance. EU USERS:If you are a consumer resident in the EU, you may also bring proceedings before the courts of your country of residence. You have the right to use the EU Online Dispute Resolution platform at https://ec.europa.eu/consumers/odr/. For Danish consumers, complaints may be submitted to the Danish Consumer Complaints Board (Forbrugerklagenævnet) at www.forbrug.dk.

This section applies only to users outside the European Union. MANDATORY ARBITRATION: Any dispute, claim, or controversy arising out of or relating to these Terms or the Service shall be resolved by binding arbitration rather than in court, except that either party may bring individual claims in small claims court. CLASS ACTION WAIVER: You agree that any arbitration or legal proceedings shall be conducted on an individual basis only. You waive any right to bring or participate in a class action, class arbitration, or representative action. ARBITRATION PROCESS: Arbitration shall be conducted under the rules of the Danish Institute of Arbitration (Voldgiftsinstituttet) or another mutually agreed arbitration body. The arbitration shall take place in Copenhagen, Denmark, in the English language. NOTE FOR EU/DANISH CONSUMERS: This arbitration clause does not apply to you. EU consumers retain the right to bring disputes before national courts and consumer protection authorities.

Amendments:We may modify these Terms at any time. For material changes that affect your rights or obligations, we will give at least 30 days' notice by email or in-app notice before the change takes effect. Non-material changes (clarifications, corrections, contact details) take effect on posting. If you do not accept a material change, your remedy is to stop using the Service and cancel your subscription before it takes effect. Continued use after the effective date constitutes acceptance. Force Majeure: We are not liable for any failure or delay in performance caused by events beyond our reasonable control, including acts of God, natural disaster, war, terrorism, civil unrest, labour disputes, epidemic or pandemic, governmental action, power or telecommunications failure, internet or hosting-provider outage, or the failure of any third-party service on which the Service depends. This does not extend to our obligation to refund amounts paid for a service we cannot deliver. Severability: If any provision of these Terms is held invalid, illegal, or unenforceable by a court or competent authority, that provision shall be modified to the minimum extent necessary to make it enforceable, or if that is not possible, severed. All remaining provisions continue in full force and effect. Entire Agreement: These Terms, together with our Privacy Policy, constitute the entire agreement between you and us regarding the Service, and supersede all prior or contemporaneous understandings, communications, and proposals, whether oral or written. This clause does not exclude liability for fraudulent misrepresentation. Assignment: You may not assign or transfer these Terms or any rights under them without our prior written consent; any attempt to do so is void. We may assign these Terms in whole or in part to an affiliate, or in connection with a merger, acquisition, reorganisation, or sale of all or substantially all of our assets, on notice to you. If you are an EU consumer and the assignment would materially disadvantage you, you may terminate and receive a pro-rata refund of any prepaid, unused subscription period. Waiver: Our failure or delay in enforcing any provision of these Terms is not a waiver of that provision or of any other. A waiver is effective only if given in writing, and applies only to the specific instance identified. No Third-Party Beneficiaries: These Terms confer no rights or remedies on any person other than you and us. Language: These Terms are provided in English. Where a translation is supplied and there is a conflict, the English version prevails, except where mandatory Danish consumer law requires otherwise.

If you have questions about these Terms of Service, contact us at: Email: support@sinuose.app Sinuose v/ Samuel Stecher Copenhagen, Denmark CVR-nr. 46545990 — sole proprietorship (enkeltmandsvirksomhed), Denmark Formal legal notices (including service of process and copyright notices) may be sent to support@sinuose.app and, where written service is required, to the registered business address recorded for CVR-nr. 46545990 in the Danish Central Business Register (Det Centrale Virksomhedsregister), available at www.cvr.dk. Notices are deemed received on the next business day after transmission or delivery.