Terms and Conditions

Effective Date: May 14, 2026 · Last Updated: May 14, 2026

Please read these Terms and Conditions carefully before using the Wisen mobile application (the “App”). By creating an account or using any part of the App, you agree to be bound by these Terms. If you do not agree, please do not use the App.

These Terms constitute a legally binding agreement between you and Daria Lenskaja (the developer of Wisen), governing your access to and use of the App and all related services.

1. Who We Are

Wisen is developed and maintained by Daria Lenskaja (“we”, “us”, or “our”), operating as an independent solo developer.

2. The Service

Wisen is an AI-native thinking and note-taking app. It allows you to:

  • Create and organise notes using a block-based editor
  • Receive AI-powered Echoes — personalised memory prompts based on your notes
  • Generate structured drafts (emails, LinkedIn posts, and other formats) from your note content
  • Get multi-note summaries and interactive AI question dialogs
  • Sync your notes securely across devices using end-to-end encryption
  • Capture ideas via voice recordings, file imports, images, and handwriting

AI features are powered by the OpenAI and Anthropic APIs and are entirely opt-in. You may use all note-taking and storage features of Wisen without ever using an AI feature.

3. Eligibility

You must be at least 13 years of age to use the App. If you are located in the European Union or EEA, you must be at least 16 years of age, unless verifiable parental or guardian consent has been provided.

By using the App, you represent and warrant that you meet the applicable age requirements and have the legal capacity to enter into a binding agreement under the laws of your jurisdiction.

4. Electronic Communications

By creating an account and accepting these Terms, you agree to receive electronic communications from us related to the App and your account. These may include:

  • Account-related notices (password resets, security alerts, changes to these Terms or our Privacy Policy)
  • Service announcements (new features, planned maintenance, significant changes to the App)
  • Support communications in response to requests you initiate

You are responsible for keeping your registered email address accurate and up to date. You may opt out of non-essential communications at any time, but you cannot opt out of service or account-related notices while your account remains active, as these are necessary to administer your account.

5. User Accounts

5.1 Account Creation

You must create an account to use the App. You agree to provide accurate, complete, and current information at registration and to keep your account details up to date. You are responsible for maintaining the confidentiality of your login credentials and for all activity that occurs under your account.

5.2 Account Security and Encryption

Your note content is encrypted on-device using AES-256-GCM before it is stored or synced. Your encryption key is derived from your password and is never transmitted to our servers. This means that if you lose access to your account or forget your password, recovery of your encrypted note content may not be possible.

⚠️ Important: Because your notes are encrypted with a key we cannot access, password resets involve re-encryption of your data. You are solely responsible for maintaining access to your account credentials.

5.3 Account Suspension

We may suspend your account temporarily if we have reason to believe you have violated these Terms, if we detect unusual or potentially fraudulent activity on your account, or if required to do so by law. During a suspension:

  • Your account and all associated data are preserved but access to the App is restricted
  • Cloud sync is paused; no data is deleted during the suspension period
  • You will receive an email to your registered address explaining the reason for suspension, where permitted by law
  • You may contact us at info@wisen.fi to appeal the suspension

If the issue is resolved, your account will be reinstated with all your data intact. If we determine after review that a material violation has occurred, the suspension may be converted to a permanent termination under Section 5.4.

5.4 Account Termination by Us

We reserve the right to permanently terminate your account at our sole discretion if:

  • You have materially or repeatedly violated these Terms
  • You have used the App or its AI features to generate or store content that is illegal, harmful, or abusive
  • You have attempted to gain unauthorised access to our systems or other users’ accounts
  • Continuing to provide the service to you would expose us or other users to legal, security, or reputational risk
  • We are required to do so by law or court order

Upon permanent termination of your account by us:

  • Your access to the App will be immediately and permanently revoked
  • Your account profile and all cloud-stored data will be scheduled for permanent deletion within 30 days, unless we are required by law to retain certain records for longer
  • Where practicable and not prohibited by law, we will notify you by email at least 7 days before data deletion occurs, giving you an opportunity to contact us if you believe the termination was made in error
  • We will not be liable to you or any third party for any consequence of such termination
  • Any prepaid subscription fees are non-refundable in cases of termination for cause

Termination does not affect any right or obligation that arose prior to termination, including any accrued liability.

5.5 Account Deletion by You

You may delete your account at any time from within the App under Account Settings > Delete Account. When you choose to delete your account:

  • Your account profile, authentication credentials, and all cloud-stored encrypted note data are permanently deleted
  • Deletion is processed immediately through a secure server-side function and is irreversible — we cannot recover your data after this point
  • Deletion tombstones (records used to sync deletions across devices) are retained for up to 30 days and then pruned automatically
  • Data stored locally on your device remains until you uninstall the App or clear its data manually
  • Any active subscription will not be automatically cancelled through in-app deletion — you must also cancel your subscription separately through the Apple App Store

6. User Content

6.1 Ownership

You retain full ownership of all notes, content, and data you create in the App. We do not claim any intellectual property rights over your content.

6.2 Licence to Operate the Service

By using the App, you grant us a limited, non-exclusive, royalty-free licence to store, process, and transmit your content solely to the extent necessary to provide the service — including syncing your encrypted data to Supabase and, where you choose to use AI features, transmitting plain text to the OpenAI or Anthropic APIs. This licence does not permit us to use your content for any other purpose. This licence terminates when you delete your account or the relevant content.

6.3 Your Responsibility for Content

You are solely responsible for the content you create, store, and process using the App. You represent and warrant that:

  • You own or have the necessary rights to any content you store in the App
  • Your content does not infringe the intellectual property, privacy, or other rights of any third party
  • Your content does not violate any applicable law or regulation
  • Your content does not contain malware, viruses, or any other malicious code

7. Acceptable Use

You agree to use the App only for lawful purposes and in accordance with these Terms. You agree not to:

  • Attempt to reverse-engineer, decompile, or disassemble the App
  • Use the App or its AI features to generate content intended to harm, deceive, or defraud others
  • Attempt to gain unauthorised access to other users’ accounts or our backend systems
  • Use automated tools or scripts to interact with the App in ways not expressly permitted
  • Resell, sublicense, or commercially exploit the App or its features without our prior written consent
  • Circumvent, disable, or interfere with any security-related features of the App
  • Use the App to gain competitive intelligence about us or to build a competing product
  • Frame or mirror any part of the App or its web presence without our prior written consent

8. AI Features — Important Disclaimer

Wisen’s AI features (Echoes, question dialogs, summaries, and draft generation) are powered by the OpenAI and Anthropic APIs. When you use an AI feature, relevant plain text from your notes is transmitted to OpenAI’s or Anthropic’s servers in the United States in unencrypted form.

⚠️ AI-generated content — including Echoes, summaries, question dialogs, and drafts — is provided for informational and productivity purposes only. It may be inaccurate, incomplete, or inappropriate for your specific situation. You should not rely on AI-generated content as a substitute for professional advice (legal, medical, financial, or otherwise).

We make no warranty that AI outputs will be accurate, relevant, or fit for any particular purpose. We are not liable for any decisions you make based on AI-generated content produced by the App.

AI features are entirely opt-in. You may use all note-taking and storage features of Wisen without ever activating an AI feature.

9. Third-Party Services

The App integrates with the following third-party services, each governed by their own terms and privacy policies. We are not responsible for the data handling practices of any third party.

9.1 OpenAI

Note text submitted through certain AI features is processed by OpenAI, LLC. By using these AI features, you agree to OpenAI’s Terms of Use and Privacy Policy.

9.2 Supabase

Your encrypted account data and note sync are stored using Supabase. Your note content is stored exclusively as encrypted ciphertext that Supabase cannot read.

9.3 Apple Frameworks

The Voice Note feature uses Apple’s Speech Recognition framework (SFSpeechRecognizer), which transmits audio to Apple’s servers for transcription. Other Apple frameworks (Vision, NaturalLanguage, PencilKit) operate entirely on-device.

10. Apple App Store — Additional Terms

The following terms apply specifically to your use of the App on any Apple device. In the event of a conflict between this section and any other section of these Terms, this section controls with respect to Apple-related matters.

  • These Terms are concluded solely between you and Daria Lenskaja. Apple is not a party to these Terms and has no obligation to provide any maintenance or support for the App.
  • The licence granted to you for the App is limited to a non-transferable licence to use the App on Apple-branded devices you own or control, subject to the Usage Rules set forth in the Apple App Store Terms of Service.
  • Apple has no warranty obligations with respect to the App. To the extent any applicable warranty exists, we (not Apple) are solely responsible for it.
  • We (not Apple) are responsible for addressing any claims you or any third party may have relating to the App, including: (i) product liability claims; (ii) claims that the App fails to conform to any applicable legal or regulatory requirement; and (iii) claims arising under consumer protection or similar legislation.
  • In the event of any third-party claim that the App or your use of it infringes that third party’s intellectual property rights, we (not Apple) are solely responsible for the investigation, defence, settlement, and discharge of such claim.
  • You represent and warrant that you are not located in a country subject to a U.S. Government embargo or designated as a terrorist-supporting country, and that you are not on any U.S. Government list of prohibited or restricted parties.
  • Apple and its subsidiaries are third-party beneficiaries of these Terms and, upon your acceptance, Apple has the right to enforce these Terms against you as a third-party beneficiary.

11. Subscriptions and Payments

Wisen may offer paid subscription plans in the future. When such plans are introduced, the applicable pricing, features, billing terms, and refund policies will be communicated clearly within the App and on our website before any charges are made.

All in-app purchases and subscriptions are processed through Apple’s App Store and governed by Apple’s Media Services Terms and Conditions. We do not directly process or store payment information.

Subscription fees, where applicable, do not include any taxes or duties payable under applicable law. Any such charges are your responsibility unless otherwise required by law.

12. Intellectual Property

The App, including its design, code, interface, branding, and all features (excluding your content), is the intellectual property of Daria Lenskaja and is protected by applicable intellectual property laws. Nothing in these Terms grants you any right to use our trademarks, logos, or brand elements without our prior written consent.

You may not copy, reproduce, distribute, modify, or create derivative works of the App or any part of it without our express written permission. You may not use the App or its outputs in any artificial intelligence training pipeline or data mining activity.

13. Service Availability and Changes

We aim to keep the App available and running smoothly, but we do not guarantee uninterrupted or error-free access. We reserve the right to modify, suspend, or discontinue the App (or any part of it) at any time, with or without notice, including for maintenance, security, or business reasons.

We may also update these Terms from time to time. Material changes will be communicated via an in-app notice or by email to the address associated with your account before taking effect. Your continued use of the App following any update constitutes your acceptance of the revised Terms.

14. Disclaimer of Warranties

THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.

We do not warrant that the App will be uninterrupted, error-free, or free of viruses or other harmful components. We do not warrant that any AI-generated content will be accurate, complete, or suitable for any purpose. We are not a backup service; you are solely responsible for maintaining your own backups of any data you consider important.

To the maximum extent permitted by applicable law (including Finnish and EU consumer protection law), we disclaim all warranties not expressly stated in these Terms.

15. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, WE SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF THE APP, INCLUDING LOSS OF DATA, LOSS OF PROFITS, OR ANY RELIANCE ON AI-GENERATED CONTENT.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, OUR TOTAL CUMULATIVE LIABILITY TO YOU FOR ALL CLAIMS ARISING OUT OF OR RELATED TO THESE TERMS OR YOUR USE OF THE APP SHALL NOT EXCEED €100 (ONE HUNDRED EUROS) OR THE AMOUNT YOU PAID TO US IN THE 12 MONTHS PRECEDING THE CLAIM, WHICHEVER IS GREATER.

Nothing in these Terms limits our liability for: (a) death or personal injury caused by our negligence; (b) fraud or fraudulent misrepresentation; or (c) any liability that cannot be excluded or limited under applicable Finnish or EU law.

16. Indemnification

To the fullest extent permitted by applicable law, you agree to indemnify, defend, and hold harmless Daria Lenskaja and any successors or assigns from and against any and all claims, damages, losses, liabilities, costs, and expenses (including reasonable legal fees) arising out of or related to:

  • Your use or misuse of the App
  • Your violation of these Terms
  • Your content, including any claim that your content infringes the rights of a third party
  • Your violation of any applicable law or regulation

This indemnification obligation survives termination of your account or these Terms.

17. Force Majeure

We shall not be liable for any failure or delay in performing our obligations under these Terms where such failure or delay results from any cause beyond our reasonable control, including but not limited to: acts of God, natural disasters, pandemic or epidemic, war, terrorism, civil unrest, fire, flood, power outages, failure or disruption of internet or telecommunications infrastructure, failure of third-party services (including OpenAI, Anthropic, or Supabase), governmental actions, or changes in law or regulation.

In such events we will make reasonable efforts to resume normal service as quickly as possible and will communicate anticipated disruptions where practicable.

18. Governing Law and Dispute Resolution

These Terms are governed by and construed in accordance with the laws of Finland. If you are a consumer located in the EU, you also benefit from any mandatory provisions of the consumer protection laws of your country of residence.

Any dispute arising out of or in connection with these Terms or your use of the App shall first be attempted to be resolved amicably by contacting us at info@wisen.fi. If a resolution cannot be reached within 30 days, disputes shall be subject to the exclusive jurisdiction of the courts of Helsinki, Finland, without prejudice to your rights as a consumer under applicable EU law.

EU consumers may also use the European Commission’s Online Dispute Resolution platform at ec.europa.eu/consumers/odr.

19. Miscellaneous

Entire Agreement: These Terms, together with our Privacy Policy, constitute the entire agreement between you and us regarding your use of the App and supersede all prior agreements or understandings.

Severability: If any provision of these Terms is found to be unenforceable, the remaining provisions will continue in full force and effect.

No Waiver: Our failure to enforce any right or provision of these Terms shall not be deemed a waiver of that right or provision.

Assignment: You may not assign your rights or obligations under these Terms without our prior written consent. We may assign our rights and obligations without restriction, including in connection with a merger, acquisition, or sale of assets, subject to the data protections described in our Privacy Policy.

Section Headings: Section titles are for convenience only and have no legal or contractual effect.

20. Contact Us

If you have any questions about these Terms, please contact:

Developer: Daria Lenskaja
Website: wisen.fi
Email: info@wisen.fi

We will respond to all legitimate enquiries within 30 days.

These Terms were last updated on May 14, 2026.