SYNTHGUARD
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    Terms of Service

    Last updated: April 2026

    1. Scope & parties

    These Terms of Service ("Terms") govern your use of the website synthguard.net and the related browser-based tools (collectively, the "Service") operated by Tim Geithner, sole proprietorship "SynthGuard", c/o IP-Management #9778, Ludwig-Erhard-Str. 18, 20459 Hamburg, Germany ("SynthGuard", "we", "us"). Full provider details are in the Legal Notice. By creating an account or using the Service you accept these Terms. If you act on behalf of a company, you represent that you are authorised to bind it.

    2. The Service

    SynthGuard provides browser-only image, video, and text humanization tools and an AI image detector. All processing happens locally in your browser via WebAssembly and Web Workers; no media is uploaded to our servers. The Service is offered under several plans (free, Pro, Studio) with weekly credit limits described on /pricing.

    3. Account registration

    You must be at least 16 years old to register. You agree to provide accurate information, keep your credentials secure, and notify us immediately of any unauthorised access. You are responsible for all activity under your account. We may refuse, suspend, or terminate accounts at our reasonable discretion.

    4. Plans, credits & pricing

    • Weekly credits: all paid plans grant a fixed number of credits per ISO calendar week, resetting every Monday at 00:00 UTC. Unused credits do not roll over.
    • Credit costs: 1 image humanize = 1 credit; 1 video humanize = 2 credits; batches of 10+ images = 0.5 credits per image; the AI detector is free and does not consume credits.
    • Prices: all prices are shown including statutory VAT where applicable. Subscriptions renew automatically at the end of each billing period (monthly or annually) until cancelled.
    • Price changes: we may change prices for future billing periods with at least 30 days' advance notice by email. If you do not accept the change you may terminate before it takes effect.

    5. Conclusion of contract

    For paid plans, the contract is concluded when you complete the Stripe checkout and we send you a confirmation email. For free use, the contract is concluded upon successful account registration.

    6. Right of withdrawal for consumers (EU)

    If you are a consumer with habitual residence in the European Union, you have the right to withdraw from a paid subscription within 14 days of conclusion of the contract without giving any reason (Art. 246a § 1 EGBGB, § 312g BGB).

    Express consent & loss of right of withdrawal for digital content. By starting to use the paid Service before the 14-day withdrawal period has expired — for example, by running a humanization or starting any other paid feature — you expressly consent to the immediate performance of the contract and acknowledge that you lose your right of withdrawal as soon as performance has begun (§ 356 (5) BGB / Art. 16 (m) Directive 2011/83/EU).

    To exercise the right of withdrawal before performance begins, send a clear declaration (e.g. an email to info@synthguard.net) stating your decision. A model withdrawal form is available on request.

    7. Term & termination

    • Subscriptions run for the chosen billing period (monthly or annual) and renew automatically for the same period unless cancelled before the end of the current period.
    • Cancellation button (§ 312k BGB). Consumers can cancel their paid subscription at any time using our cancellation page at synthguard.net/cancel-contract. The page is permanently, directly, and easily accessible from the footer of every page (label: "Verträge hier kündigen" / "Cancel contracts here") and does not require login. After submitting the form, you receive an on-screen confirmation and an immediate email confirming receipt as well as the effective date of termination, in line with § 312k (2)–(4) BGB.
    • Upon cancellation, access continues until the end of the paid period; we do not pro-rate refunds for unused credits or partial periods, except where required by mandatory law.
    • We may terminate the contract for good cause, in particular for breach of § 8 (Acceptable use), with immediate effect.

    8. Acceptable use

    You must not use the Service to create, distribute, or attempt to create or distribute content that is illegal under applicable law or that violates third-party rights. Prohibited uses include, but are not limited to:

    • Sexual or sexualised content depicting minors (CSAM) — strictly forbidden.
    • Non-consensual intimate imagery (NCII), including "deepnudes".
    • Identity fraud, forged identity documents, forged invoices, or any content intended to deceive in financial, legal, medical, or governmental processes.
    • Disinformation campaigns or content designed to deceive in elections, public-safety matters, or to incite violence.
    • Impersonation of real persons in a way that is defamatory, harassing, or violates their personality rights or right of publicity.
    • Automated mass-scraping of the Service, reverse-engineering of the processing pipeline beyond what is permitted by mandatory law (§ 69d UrhG), or circumvention of technical limits.

    You are solely responsible for ensuring that you have the necessary rights to the content you process and that the resulting use complies with applicable law in your jurisdiction. Violations may lead to immediate suspension of your account and, where appropriate, reporting to law-enforcement authorities.

    9. Your content & intellectual property

    You retain all rights to the inputs you bring to the Service and to the outputs the Service generates from them. Because processing is performed locally in your browser, we do not receive, store, or claim any rights to your media. The Service itself — including software, models, copy, branding, and pipeline implementation — remains the intellectual property of SynthGuard or its licensors. You receive a non-exclusive, non-transferable right to use the Service for the term of your subscription.

    10. Service availability & changes

    We aim for high availability but do not guarantee uninterrupted, error-free operation. Maintenance windows, updates, and force-majeure events may temporarily restrict access. We may add, modify, or remove features, in particular to address legal or security requirements; material reductions of the agreed scope will be announced in advance and give consumers a special right of termination.

    11. No detection guarantee

    Third-party AI detectors change their thresholds frequently. We continuously update our pipeline but do not warrant that humanized output will pass any specific third-party detector at any specific time, nor that detector verdicts produced by our own detector tool are accurate in every case. The Service is a creative aid, not legal, forensic, or compliance advice.

    12. Statutory warranty (Mängelrechte)

    For paid digital services, the statutory rights of consumers under §§ 327 ff. BGB apply. If the Service deviates materially from the agreed quality, you may, in accordance with the statutory cascade, request supplementary performance, terminate the contract, or reduce the price. Please report any defect promptly to info@synthguard.net so we can investigate.

    13. Liability

    We are liable without limitation for damages arising from intent, gross negligence, injury to life, body, or health, under the German Product Liability Act (Produkthaftungsgesetz), and for the breach of guarantees. For slight negligence we are liable only for the breach of essential contractual obligations (cardinal obligations) and only up to the foreseeable damage typical for this type of contract. Any further liability is excluded.

    To the extent permitted by mandatory law, our aggregate liability per calendar year is limited to the total fees you paid us in the twelve months preceding the event giving rise to the claim, or EUR 100 — whichever is higher.

    14. Indemnification

    You shall indemnify us against any third-party claims, costs, and damages arising from your breach of § 8 (Acceptable use) or from content you process in violation of third-party rights, unless you are not responsible for the breach.

    15. Sub-processors & third-party services

    We use Lovable Cloud (Supabase) for backend infrastructure and Stripe for payments. Their respective terms apply where you interact with them directly (e.g. Stripe Checkout). Details and a sub-processor list are available in our Privacy Policy.

    16. Changes to these Terms

    We may amend these Terms with at least 30 days' advance notice by email or in-app notification, in particular to reflect changes in the Service, in applicable law, or in our sub-processors. The notice will highlight the changes. If you do not object in text form within the notice period, the changes are deemed accepted; we will point this out in the notice. If you object, the contract continues under the previous terms; we may then terminate the contract for the next allowed date.

    17. Governing law & jurisdiction

    These Terms are governed by the laws of the Federal Republic of Germany, excluding the UN Convention on Contracts for the International Sale of Goods (CISG). For consumers, the choice of law does not affect mandatory consumer-protection rules of the country of habitual residence. Exclusive place of jurisdiction for merchants, legal entities under public law, and special funds under public law is Hamburg, Germany.

    18. Consumer dispute resolution

    The European Commission's Online Dispute Resolution (ODR) platform was permanently shut down on 20 July 2025 and is no longer available. We are not obliged and not willing to participate in dispute resolution proceedings before a consumer arbitration board (§ 36 (1) No. 1 VSBG). Consumers may still contact us directly at info@synthguard.net — we aim to resolve disputes informally and in good faith.

    19. Severability

    Should any provision of these Terms be or become invalid, the remaining provisions remain in force. The invalid provision shall be replaced by a valid provision that comes closest to the economic purpose of the invalid one.

    20. Contact

    Questions, withdrawal declarations, defect notices: info@synthguard.net.

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