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Terms of Service

Last updated: February 9, 2026

1. Acceptance of Terms

1.1. These Terms of Service ("Terms") govern your access to and use of the Haamu.ai text anonymization service ("Service"), operated by Ville Murtonen, sole trader (toiminimi), Helsinki, Finland ("Haamu.ai," "we," "us," or "our").

1.2. By accessing or using the Service, you ("User," "you," or "your") agree to be bound by these Terms. If you are using the Service on behalf of an organization, you represent and warrant that you have the authority to bind that organization to these Terms, and "you" refers to that organization.

1.3. If you do not agree to these Terms, you must not use the Service.

1.4. These Terms constitute a legally binding agreement between you and Haamu.ai. By submitting text to the Service, you confirm that you have read, understood, and accepted these Terms in their entirety.

2. Service Description

2.1. Haamu.ai provides an AI-powered text anonymization tool with three processing modes:

  • PII Ghost: Detects and removes personal data (such as names, email addresses, phone numbers, and identification numbers) from submitted text using Microsoft Presidio. Processing occurs entirely on our server in Helsinki, Finland. Your text never leaves EU infrastructure in this mode.
  • Style Ghost: Rewrites text using an AI language model (Anthropic Claude or OpenAI GPT-4.1, as selected by you) to alter the stylometric fingerprint of the text so that authorship cannot be easily attributed. Your text is transmitted to the selected AI provider for processing.
  • Full Ghost: Combines both modes sequentially. PII is first detected and removed locally on our server, and then the cleaned text (with personal data already removed) is sent to the selected AI provider for stylometric rewriting.

2.2. The Service is provided as a tool to assist with text anonymization. It is not a certified data protection compliance solution, legal service, or substitute for professional data protection advice. You are solely responsible for determining whether the Service's output meets your specific requirements.

2.3. We do not store, log, or retain any text you submit. All processing occurs in memory and the text is discarded immediately after the response is returned to you.

3. Eligibility

3.1. You must be at least 16 years of age to use the Service, in accordance with Article 8 of the GDPR as implemented in Finnish law. If you are under 16, you may not use the Service.

3.2. By using the Service, you represent and warrant that you meet this age requirement.

3.3. If you are using the Service on behalf of an organization, you further represent and warrant that you are authorized to accept these Terms on behalf of that organization and that the organization agrees to be bound by these Terms.

4. Free Tier and Usage Limits

4.1. The Service offers a free tier that allows you to process up to 2,500 words per day without creating an account or providing any personal information.

4.2. Daily usage limits are enforced on a per-IP-address basis. Your IP address is held in memory for rate limiting purposes. A one-way cryptographic hash (not the raw IP) is stored in our usage log for abuse prevention and is automatically purged after 90 days, as described in our Privacy Policy.

4.3. We reserve the right to modify the free tier usage limits at any time. Changes to usage limits will be communicated through the Service interface.

4.4. Free tier access is provided on a best-effort basis. We do not guarantee the availability, performance, or continuity of the free tier.

5. Pro Subscription

5.1 Pro plan

The Pro plan provides unlimited word processing at a cost of EUR 9.99 per month. Additional subscription tiers (including a Student plan at EUR 4.99 per month) may be introduced in the future.

5.2 Payment processing

All payments are processed by Polar.sh (Polar Software Inc.), which acts as the merchant of record for all transactions. Polar.sh handles billing, invoicing, tax calculation (including EU VAT), and payment processing. By subscribing to a paid plan, you also agree to Polar.sh's terms of service and privacy policy, which are available at polar.sh/legal.

5.3 Billing and renewal

Subscriptions are billed monthly in advance. Your subscription will automatically renew at the end of each billing period unless you cancel it before the renewal date through the Polar.sh billing portal.

5.4 Cancellation

You may cancel your subscription at any time through the Polar.sh billing portal. Cancellation takes effect at the end of the current billing period. You will continue to have Pro access until the end of the period you have already paid for. No pro-rata refunds are provided for partial billing periods.

5.5 Refunds

Refund requests are handled by Polar.sh as merchant of record in accordance with their refund policy and applicable consumer protection laws, including the EU Consumer Rights Directive (Directive 2011/83/EU). Under EU law, you have the right to withdraw from a digital services contract within 14 days of purchase, provided you have not begun using the Service. By actively using the Pro Service during the withdrawal period, you acknowledge and consent to the loss of the right of withdrawal to the extent permitted by applicable law.

5.6 Price changes

We reserve the right to change subscription prices. Any price changes will be communicated to you at least 30 days before they take effect. Price changes will apply from the next billing period following the notice period. If you do not agree to a price change, you may cancel your subscription before the new price takes effect.

6. Acceptable Use Policy

6.1. You agree to use the Service only for lawful purposes and in compliance with all applicable laws and regulations. You must not use the Service to:

  • Process illegal content: Submit text that is itself unlawful, or that you do not have the legal right to process (for example, text obtained through unauthorized access to computer systems, wiretapping, or other illegal means)
  • Facilitate harm: Use the Service to anonymize text for the purpose of making threats, committing fraud, engaging in harassment, stalking, defamation, or any other activity intended to harm individuals or organizations
  • Evade law enforcement: Use the Service for the purpose of concealing evidence, obstructing justice, or evading lawful investigation by law enforcement authorities
  • Violate others' rights: Use the Service in a manner that infringes the intellectual property rights, privacy rights, or other legal rights of third parties
  • Distribute malware or harmful content: Submit text containing malicious code, malware payloads, phishing content, or any content designed to exploit vulnerabilities in systems or deceive individuals
  • Circumvent controls: Attempt to circumvent rate limits, security measures, access controls, or other technical restrictions of the Service, including but not limited to using multiple IP addresses, proxies, or automated systems to exceed usage limits
  • Abuse the Service: Use the Service in any manner that could damage, disable, overburden, or impair the Service, or interfere with any other party's use of the Service
  • Generate disinformation: Use the Service to produce anonymized text for the purpose of creating or distributing disinformation, propaganda, or deceptive content at scale
  • Violate applicable AI regulations: Use the Service in a manner that violates the EU AI Act (Regulation (EU) 2024/1689) or other applicable AI regulations

6.2. You are solely responsible for all text you submit to the Service. You represent and warrant that you have the legal right to process any text you submit, including any personal data contained therein, and that such processing complies with all applicable data protection laws (including the GDPR).

6.3. If you are submitting text containing the personal data of other individuals, you represent and warrant that you have a valid legal basis for doing so under applicable data protection law, including but not limited to the GDPR.

6.4. We reserve the right to suspend or terminate your access to the Service, without prior notice, if we reasonably believe that you have violated this Acceptable Use Policy or any other provision of these Terms.

7. Intellectual Property

7.1 Your content

You retain all ownership rights in the text you submit to the Service ("Input Text") and the processed text returned by the Service ("Output Text"). Haamu.ai claims no ownership, license, or other rights over your Input Text or Output Text.

7.2 Limited license to process

By submitting text to the Service, you grant Haamu.ai a limited, non-exclusive, non-transferable, revocable license to process your Input Text solely for the purpose of providing the Service (detecting and removing PII, rewriting text, or both). This license terminates immediately upon completion of the processing request. We do not retain your text after processing.

7.3 Our intellectual property

The Service, including its design, code, algorithms, user interface, trade names, trademarks, and all associated documentation, is the intellectual property of Haamu.ai or its licensors. Nothing in these Terms grants you any right to use our trademarks, trade names, logos, or other proprietary marks.

7.4 AI-generated output

Output Text generated through Style Ghost and Full Ghost modes is produced using AI language models operated by third-party providers (Anthropic or OpenAI). Haamu.ai does not claim ownership over AI-generated output. You are responsible for ensuring that your use of the Output Text complies with the applicable AI provider's terms of service (see Section 10).

8. Disclaimers and Limitation of Liability

PLEASE READ THIS SECTION CAREFULLY. IT LIMITS HAAMU.AI'S LIABILITY TO YOU AND CONTAINS IMPORTANT DISCLAIMERS.

8.1 Service provided "AS IS"

THE SERVICE IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AND ANY WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE. TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, HAAMU.AI DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, RELATING TO THE SERVICE.

8.2 No guarantee of PII detection

PII DETECTION IS PERFORMED USING MICROSOFT PRESIDIO, WHICH EMPLOYS NATURAL LANGUAGE PROCESSING AND PATTERN MATCHING. PII DETECTION IS PROBABILISTIC AND NOT GUARANTEED TO BE COMPLETE OR ACCURATE. HAAMU.AI DOES NOT WARRANT OR REPRESENT THAT THE SERVICE WILL DETECT AND REMOVE ALL PERSONAL DATA FROM YOUR TEXT. SOME PERSONAL DATA MAY REMAIN UNDETECTED, PARTICULARLY IN UNUSUAL FORMATS, UNCOMMON LANGUAGES, CONTEXTUAL REFERENCES, NICKNAMES, CODED LANGUAGE, OR SPECIALIZED DOMAIN TERMINOLOGY. YOU ARE SOLELY RESPONSIBLE FOR REVIEWING ALL OUTPUT TEXT AND VERIFYING THAT IT MEETS YOUR REQUIREMENTS BEFORE ANY FURTHER USE OR DISCLOSURE.

8.3 No guarantee of style anonymization

STYLE ANONYMIZATION IS PERFORMED USING AI LANGUAGE MODELS (ANTHROPIC CLAUDE OR OPENAI GPT-4.1). THE EFFECTIVENESS OF STYLOMETRIC ANONYMIZATION DEPENDS ON MANY FACTORS INCLUDING TEXT LENGTH, LANGUAGE, WRITING STYLE, AND THE CAPABILITIES OF THE AI MODEL. HAAMU.AI DOES NOT WARRANT OR REPRESENT THAT:

  • THE STYLE-REWRITTEN TEXT WILL BE UNATTRIBUTABLE TO THE ORIGINAL AUTHOR
  • THE MEANING, ACCURACY, OR NUANCE OF THE TEXT WILL BE PRESERVED AFTER REWRITING
  • THE REWRITTEN TEXT WILL BE FREE FROM FACTUAL ERRORS, HALLUCINATIONS, OR UNINTENDED MEANING CHANGES INTRODUCED BY THE AI MODEL
  • THE STYLOMETRIC TRANSFORMATION WILL DEFEAT ALL AUTHORSHIP ATTRIBUTION METHODS

YOU ARE SOLELY RESPONSIBLE FOR REVIEWING AI-REWRITTEN TEXT FOR ACCURACY, COMPLETENESS, AND FAITHFULNESS TO YOUR INTENDED MEANING BEFORE ANY FURTHER USE.

8.4 Not a compliance solution

The Service is a tool to assist with text anonymization. It is not a certified data protection compliance solution, data processing tool, or legal service. Haamu.ai makes no representations or warranties regarding the legal compliance of the Service's output with the GDPR, any national data protection law, or any other legal framework. The Service does not constitute legal, regulatory, or compliance advice. You should consult qualified legal counsel for questions regarding your data protection obligations.

8.5 Special category data

If you submit text containing special categories of personal data as defined in Article 9 GDPR (data revealing racial or ethnic origin, political opinions, religious or philosophical beliefs, trade union membership, genetic data, biometric data, health data, or data concerning sex life or sexual orientation), you do so entirely at your own risk. Haamu.ai provides no additional guarantees regarding the detection or removal of special category data. You are solely responsible for ensuring that you have a lawful basis for processing such data and that appropriate safeguards are in place.

8.6 Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW:

  • Maximum aggregate liability: Haamu.ai's total aggregate liability to you for all claims arising out of or relating to these Terms or the Service shall not exceed the total amount of fees you have actually paid to Haamu.ai (through Polar.sh) in the twelve (12) months immediately preceding the event giving rise to the claim. For free tier users who have paid no fees, Haamu.ai's maximum aggregate liability shall be EUR 50.
  • No indirect damages: In no event shall Haamu.ai be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, including but not limited to damages for loss of profits, goodwill, data, business opportunities, or other intangible losses, even if Haamu.ai has been advised of the possibility of such damages.
  • No liability for undetected PII: Haamu.ai shall not be liable for any personal data that passes through the Service undetected, including any damages, fines, penalties, or claims arising from the disclosure or processing of personal data that the Service failed to detect and remove.
  • No liability for downstream use: Haamu.ai shall not be liable for any use you or any third party makes of the Output Text, including any claims arising from the publication, distribution, or further processing of anonymized or rewritten text.
  • No liability for AI output: Haamu.ai shall not be liable for any errors, inaccuracies, hallucinations, meaning changes, or other issues in AI-rewritten text produced by third-party AI providers (Anthropic or OpenAI).
  • No liability for third-party actions: Haamu.ai shall not be liable for any acts, omissions, or failures of third-party service providers, including Anthropic, OpenAI, Hetzner, and Polar.sh.

8.7 Essential purpose

The limitations set forth in this Section 8 shall apply even if any limited remedy provided herein fails of its essential purpose. The Parties acknowledge that these limitations reflect a reasonable allocation of risk and are a fundamental basis of the bargain between the Parties.

8.8 Mandatory consumer rights

Nothing in these Terms shall limit or exclude any liability that cannot be limited or excluded under applicable law, including but not limited to liability for fraud, willful misconduct, or gross negligence, and mandatory consumer protection rights under EU and Finnish law.

9. Data Processing

9.1. Our processing of personal data is described in our Privacy Policy, available at haamu.ai/privacy. By using the Service, you acknowledge that you have read and understood our Privacy Policy.

9.2. If you are a Controller as defined under the GDPR and require a Data Processing Agreement, our standard DPA is available at haamu.ai/dpa.

9.3. We do not store, log, or retain any text you submit to the Service. All processing occurs in memory and is discarded immediately after the response is returned.

9.4. When you use Style Ghost or Full Ghost modes, your text (or in Full Ghost mode, the PII-stripped text) is transmitted to the AI provider you select (Anthropic or OpenAI). These providers may retain API request data for up to 30 days for safety monitoring and abuse prevention purposes. Neither provider uses API data for model training by default.

10. Third-Party Services

10.1. The Service relies on third-party services to provide its functionality. By using the Service, you acknowledge and accept that:

  • Anthropic (Claude API): When you select Claude as the AI provider, your text is processed by Anthropic PBC in accordance with Anthropic's usage policy and terms of service. Anthropic's terms are available at anthropic.com/legal.
  • OpenAI (GPT-4.1 API): When you select GPT-4.1 as the AI provider, your text is processed by OpenAI, LLC in accordance with OpenAI's usage policies and terms of service. OpenAI's terms are available at openai.com/policies.
  • Polar.sh: Subscription payments are processed by Polar.sh (Polar Software Inc.), which acts as merchant of record. Polar.sh's terms are available at polar.sh/legal.

10.2. Haamu.ai is not responsible for the practices, policies, or terms of third-party service providers. Your use of features that involve third-party services is also subject to those providers' terms.

10.3. You acknowledge that you choose which AI provider to use for Style Ghost and Full Ghost modes. Your selection determines which third party processes your text. If you are concerned about international data transfers, you may choose to use only PII Ghost mode (which processes entirely in Helsinki, Finland) or select Anthropic Claude (which processes EU API requests within EU infrastructure).

11. Service Availability

11.1. We endeavor to maintain the Service's availability but provide no Service Level Agreement (SLA) or uptime guarantee. The Service is provided on a best-effort basis.

11.2. We may temporarily suspend or restrict access to the Service, without notice, for maintenance, updates, security patches, or other operational reasons.

11.3. We reserve the right to modify, suspend, or discontinue the Service (or any part thereof) at any time, with or without notice. We shall not be liable to you or any third party for any modification, suspension, or discontinuation of the Service.

11.4. The Service depends on the availability of third-party services (including Anthropic, OpenAI, and Hetzner). Haamu.ai is not liable for any downtime, service degradation, or unavailability caused by issues with third-party providers.

12. Modification of Terms

12.1. We reserve the right to modify these Terms at any time. When we make material changes to these Terms, we will:

  • Update the "Last updated" date at the top of this page
  • Post a notice on the Service interface for at least 30 days
  • For Pro subscribers, send notification to the email address associated with their subscription at least 30 days before the changes take effect

12.2. Your continued use of the Service after the effective date of any modifications constitutes your acceptance of the modified Terms. If you do not agree to the modified Terms, you must stop using the Service and, if applicable, cancel your subscription before the changes take effect.

12.3. Non-material changes (such as corrections of typographical errors, formatting adjustments, or clarifications that do not substantively alter your rights or obligations) may be made without prior notice.

13. Governing Law and Dispute Resolution

13.1. These Terms shall be governed by and construed in accordance with the laws of Finland, without regard to its conflict of laws principles.

13.2. Any dispute, controversy, or claim arising out of or relating to these Terms, or the breach, termination, or validity thereof, shall be submitted to the exclusive jurisdiction of the courts of Helsinki, Finland.

13.3. Notwithstanding the foregoing, if you are a consumer (a natural person acting for purposes outside your trade, business, craft, or profession) residing in the European Union, you may also bring proceedings in the courts of the EU Member State in which you are domiciled, in accordance with Regulation (EU) 1215/2012. Nothing in these Terms affects your rights as a consumer under the mandatory consumer protection laws of your country of residence.

13.4. If you are a consumer in the EU, you may also seek to resolve disputes through the European Commission's Online Dispute Resolution platform, available at ec.europa.eu/consumers/odr.

14. Severability

14.1. If any provision of these Terms is held by a court of competent jurisdiction to be invalid, illegal, or unenforceable, that provision shall be modified to the minimum extent necessary to make it valid, legal, and enforceable while preserving its original intent. If such modification is not possible, the provision shall be severed from these Terms.

14.2. The invalidity or unenforceability of any provision shall not affect the validity or enforceability of the remaining provisions of these Terms, which shall continue in full force and effect.

14.3. If any limitation of liability or disclaimer in Section 8 is held to be unenforceable in a particular jurisdiction, the liability shall be limited to the maximum extent permitted by the applicable law of that jurisdiction.

15. General Provisions

15.1 Entire agreement

These Terms, together with the Privacy Policy and (where applicable) the Data Processing Agreement, constitute the entire agreement between you and Haamu.ai regarding the use of the Service and supersede all prior and contemporaneous agreements, representations, and understandings.

15.2 Waiver

The failure of Haamu.ai to enforce any right or provision of these Terms shall not constitute a waiver of that right or provision. Any waiver of any provision of these Terms will be effective only if in writing and signed by Haamu.ai.

15.3 Assignment

You may not assign or transfer your rights or obligations under these Terms without the prior written consent of Haamu.ai. Haamu.ai may assign its rights and obligations under these Terms without restriction.

15.4 Force majeure

Haamu.ai shall not be liable for any failure or delay in performing its obligations under these Terms where such failure or delay results from circumstances beyond its reasonable control, including but not limited to natural disasters, acts of government, war, terrorism, pandemic, labor disputes, power failures, internet or telecommunications failures, cyberattacks, or failures of third-party service providers.

15.5 No third-party beneficiaries

These Terms do not confer any rights or remedies upon any person other than the Parties.

16. Contact Information

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

Haamu.ai
Helsinki, Finland
General inquiries: hello@haamu.ai
Privacy requests: privacy@haamu.ai

End of Terms of Service.