Terms of Use

    Last updated: 2026-06-22

    These Terms of Use ("Terms") govern your use of the Wunderli mobile application ("App"), your Wunderli account, Credits and Credit Packs, subscriptions, AI-generated stories, safety features, and related services provided by ArvenX GmbH, a company registered in Switzerland ("we", "us", "ArvenX").

    By downloading, installing, or using the App, you agree to these Terms. If you do not agree, please do not use the App.

    For users who download Wunderli through the Apple App Store, the App is licensed under Apple's Standard Licensed Application End User License Agreement. These Terms apply in addition to the applicable app store terms (Apple App Store, Google Play Store) and govern your use of Wunderli accounts, Credits, subscriptions, generated content, safety features, and related services.

    Wunderli is designed for families. Children may use the App under the supervision and responsibility of a parent or legal guardian. The user account is intended to be created and managed by the adult account holder, who must be legally able to accept these Terms and is responsible for all use of the account, including use by children.

    You must be at least 18 years old, or the age of majority in your country of residence, to create or manage a Wunderli account and accept these Terms.

    1. License Grant

    ArvenX grants you a limited, non-exclusive, non-transferable, revocable license to use the App for personal, non-commercial purposes on devices you own or control. Your use is also subject to the applicable app store terms (Apple App Store, Google Play Store) and platform rules. Where the App is downloaded through the Apple App Store, the app license is subject to Apple's Standard Licensed Application End User License Agreement.

    2. Usage Restrictions

    You may not:

    • copy, modify, decompile, or reverse-engineer the App;
    • sublicense, rent, lease, or redistribute the App;
    • use the App for unlawful purposes or in violation of these Terms;
    • bypass or interfere with safety filters, parent gates, payment systems, fraud-prevention systems, or other security mechanisms;
    • attempt to generate unlawful, harmful, discriminatory, sexual, violent, or otherwise inappropriate content;
    • create repeated or multiple accounts to obtain free Credits, trial benefits, promotions, or referral rewards;
    • misuse refunds, promotions, referral rewards, or Credit Packs;
    • automate access to the App, scrape, or otherwise overload the service;
    • enter personal data about children or third parties into character names or safety reports.

    3. Children and Family Use

    Wunderli is designed for families. Children may use the App under the supervision and responsibility of a parent or legal guardian. The user account is intended to be created and managed by the adult account holder.

    Wunderli does not ask children to provide their real name, age, date of birth, address, school, photo, contact details, location, or other child profile information. We do not create child profiles.

    Certain actions, such as submitting a safety report or deleting the account, are protected by a parent gate, such as a simple math question. The parent gate is designed to reduce accidental access by younger children. It is not a verified parental-consent mechanism and does not verify adulthood or legal identity.

    For more information about how Wunderli processes personal data, please read our Privacy Policy.

    4. AI-Generated Content and Safety

    Wunderli uses AI systems to generate stories based on predefined story options selected by the user. The App does not provide free-form story prompt input. Free-text input is limited to fictional character names of up to 30 characters and safety reports whose submission is protected by a parent gate.

    Generated stories and character names are checked by automated safety systems to reduce inappropriate or unsafe content. AI-generated content may occasionally be imperfect. Parents or guardians should review generated stories and use the in-app report feature if they notice a problem.

    Wunderli stories are provided for entertainment, family storytelling, bedtime, and informal learning. They are not professional, medical, psychological, therapeutic, legal, or other specialist advice, and they are not a substitute for parental judgment or professional guidance.

    5. Content and Intellectual Property

    Our App and materials. The App itself, including software, user interface, branding, trademarks, logos, illustrations, curated story templates, audio narration systems, and other materials we provide, is owned by ArvenX or its licensors and is protected by copyright and intellectual property laws.

    User-provided content. You retain any rights you may have in content you provide, such as fictional character names and safety reports ("User Content"). You grant ArvenX a non-exclusive, royalty-free license to host, store, process, and use User Content only as necessary to provide and operate the App, run safety checks, improve safety, troubleshoot issues, and comply with legal obligations.

    Generated stories. You may use stories generated through your account for personal, non-commercial, private family use within the App. ArvenX may store and process generated stories and related data to provide the service, maintain your library, run safety checks, improve safety, troubleshoot, and comply with legal obligations. These Terms do not grant you any commercial exploitation rights in AI-generated stories.

    6. Subscriptions, Credit Packs, and Credits

    Wunderli uses Credits. Credits are the in-app balance used to generate stories. Credits may be granted through subscriptions, free trial offers, welcome credits, promotions, or purchased Credit Packs.

    Credit Packs are one-time consumable in-app purchases. Subscriptions provide a recurring Credit allowance during the subscription period. Credits have no cash value, are not transferable, and cannot be exchanged for money.

    Credits are deducted when story generation starts or completes, according to the behavior shown in the App. The number of Credits required may depend on the selected story length or other features shown in the App before generation starts.

    Unless stated otherwise in the App, unused Credits do not expire while the account remains active. If you delete your account, unused Credits and saved content are not recoverable.

    6.1 Auto-Renewing Subscriptions

    Subscriptions renew automatically unless cancelled through the relevant app store account settings at least 24 hours before the end of the current subscription period, or as otherwise required by the app store terms. Your Apple ID, Google Play account, or other app store account will be charged according to the subscription price and billing period shown before purchase.

    If a free trial is offered, the subscription will begin charging after the trial unless cancelled before the end of the trial period. Any unused portion of a free trial may be forfeited when a subscription is purchased, where applicable under app store rules.

    You can manage or cancel your subscription through your Apple App Store or Google Play account settings.

    6.2 Refunds and Negative Balances

    Refunds for purchases made through the Apple App Store or Google Play Store must be requested through the relevant app store. ArvenX does not directly process app store refunds, and refund decisions are made by the relevant app store, subject to its terms.

    If a purchase is refunded, the corresponding Credits may be removed from your account. If the refunded Credits have already been used, your Credit balance may become negative. In that case, you may need to purchase or receive additional Credits before generating more stories.

    6.3 Price Changes

    Prices may change. Material changes will be communicated in advance, and subscription price changes are handled according to app store rules and notice requirements.

    7. Account Deletion

    You can delete your account from within the App. Account deletion is protected by a parent gate to reduce accidental deletion by younger children.

    Deleted accounts cannot be restored. If you delete your account, saved stories, character names, Credits, and account data are deleted or anonymized where legally permitted. Previous Credits and saved content are not recoverable. Signing in again with the same Apple, Google, or Microsoft Entra External ID account creates a new account.

    Some purchase, subscription, refund, fraud-prevention, security, accounting, tax, or dispute-related records may be retained where legally required or permitted.

    8. Availability and Changes to the Service

    We aim to keep the App available but cannot guarantee uninterrupted service. ArvenX may modify, update, or discontinue parts of the App, or the App as a whole. For material service changes, we will provide notice where required by law or where reasonably possible.

    If a story fails to generate due to a technical error, we will not charge Credits where technically possible. If Credits were deducted for a failed generation, we may restore affected Credits after review. If you experience an issue, please contact us.

    If ArvenX discontinues the App or materially discontinues paid functionality, unused Credits or active subscriptions will be handled in accordance with applicable law and the relevant app store's refund and cancellation rules.

    9. Changes to These Terms

    We may update these Terms from time to time. If we make material changes, we will inform users in the App or by another appropriate method. The updated Terms apply from the date stated at the top of this page or from another date communicated to you. If you do not agree to the updated Terms, you should stop using the App.

    Your continued use of the App after the effective date of updated Terms constitutes acceptance of the updated Terms, except where applicable law requires explicit consent.

    10. Disclaimer of Warranties and Limitation of Liability

    The App is provided "as is" and "as available." ArvenX makes no warranty regarding the accuracy, completeness, or suitability of generated content.

    Generated stories may occasionally be inaccurate, incomplete, inappropriate, or unsuitable despite automated safety checks. Parents and guardians should review generated stories before sharing them with children.

    To the extent permitted by applicable law, ArvenX is not liable for indirect, incidental, special, consequential, or punitive damages, or for loss of data, loss of profits, or service interruptions. Nothing in these Terms excludes or limits liability that cannot be excluded or limited under applicable law, including mandatory consumer protection rights.

    11. Termination and Suspension

    We may suspend or terminate your access to the App if you breach these Terms, misuse the service, commit fraud or refund abuse, create a safety or security risk, fail to pay, or where required by law. Where reasonably possible, we will notify you and give you a chance to correct the issue, unless prompt suspension is necessary to prevent harm.

    If your access is terminated for abuse, unused Credits may become unavailable. Any refund rights remain subject to the relevant app store rules. On termination, the license granted in section 1 ends, and you must stop using and uninstall the App.

    12. Governing Law and Jurisdiction

    These Terms are governed by the laws of Switzerland. The courts of Zürich, Switzerland, have jurisdiction, subject to any mandatory consumer protection laws and mandatory jurisdiction rules that apply in your country of residence (in particular in the EU and the UK).

    13. General Terms

    Severability. If any provision of these Terms is found to be unenforceable, the remaining provisions remain in full effect.

    Assignment. ArvenX may assign or transfer these Terms, or its rights and obligations under these Terms, to an affiliate or in connection with a merger, acquisition, restructuring, or sale of assets. You may not assign or transfer these Terms without our prior written consent.

    Force majeure. ArvenX is not liable for delays or failures caused by events beyond its reasonable control, including network outages, outages or failures of cloud providers, app store providers, payment providers, AI or speech service providers, natural disasters, war, strikes, government action, or other force majeure events.

    Entire agreement. These Terms, together with the Privacy Policy, applicable app store terms, Apple's Standard Licensed Application End User License Agreement where applicable, and any in-app or purchase-specific terms shown to you, form the complete agreement between you and ArvenX regarding your use of the App.

    14. Contact

    ArvenX GmbH

    Wehrenbachhalde 47

    8053 Zürich

    Switzerland

    Email: hello@wunderliapp.com

    Website: https://wunderliapp.com

    For purchase or refund questions, please use the Apple App Store or Google Play account where the purchase was made. For other support questions, contact us at the email above.

    15. Apple App Store Additional Terms

    This Section applies when you download or use the App from the Apple App Store. In the event of any conflict between this Section and the rest of these Terms, this Section controls with respect to your use of the App obtained from the Apple App Store.

    15.1 Acknowledgement. These Terms are concluded solely between you and ArvenX, and not with Apple Inc. ("Apple"). Apple is not responsible for the App or its content. ArvenX, not Apple, is solely responsible for the App and for the services and content available within it.

    15.2 Scope of License. The license granted to you for the App is limited to a non-transferable license to use the App on any Apple-branded device that you own or control, as permitted by the Usage Rules set out in the Apple Media Services Terms and Conditions, except that the App may be accessed and used by other accounts associated with you via Family Sharing or volume purchasing.

    15.3 Maintenance and Support. ArvenX is solely responsible for providing any maintenance and support for the App, as required under these Terms or applicable law. Apple has no obligation to furnish any maintenance or support services for the App.

    15.4 Warranty. ArvenX is solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. If the App fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price of the App to you, if any. To the maximum extent permitted by applicable law, Apple has no other warranty obligation whatsoever with respect to the App, and any other claims, losses, liabilities, damages, costs, or expenses attributable to any failure to conform to any warranty are the sole responsibility of ArvenX.

    15.5 Product Claims. ArvenX, not Apple, is responsible for addressing any claims by you or any third party relating to the App or your possession and use of the App, including but not limited to: (a) product liability claims; (b) any claim that the App fails to conform to any applicable legal or regulatory requirement; and (c) claims arising under consumer protection, privacy, or similar legislation.

    15.6 Intellectual Property Rights. In the event of any third-party claim that the App or your possession and use of the App infringes that third party's intellectual property rights, ArvenX, not Apple, is solely responsible for the investigation, defense, settlement, and discharge of any such claim.

    15.7 Legal Compliance. You represent and warrant that (a) you are not located in a country that is subject to a U.S. Government embargo or that has been designated by the U.S. Government as a "terrorist supporting" country; and (b) you are not listed on any U.S. Government list of prohibited or restricted parties.

    15.8 Third-Party Beneficiary. You acknowledge and agree that Apple, and Apple's subsidiaries, are third-party beneficiaries of these Terms, and that, upon your acceptance of these Terms, Apple will have the right, and will be deemed to have accepted the right, to enforce these Terms against you as a third-party beneficiary.

    15.9 Developer Contact. Questions, complaints, or claims regarding the App should be directed to ArvenX at the contact details set out in Section 14.