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Privacy Policy

Last updated: February 2026

1. Name and Contact Details of the Controller

The controller within the meaning of Art. 4(7) of the General Data Protection Regulation (GDPR) is:

Tran Consulting UG (haftungsbeschränkt)

Represented by: Vu Minh Tran, Managing Director

Ericusspitze 4

20457 Hamburg, Germany

Email: info[at]tranconsulting.de

If you have questions about the processing of your personal data, your rights as a data subject, or wish to revoke consent, please contact us using the details above.

2. Overview of Data Processing

This privacy policy explains the nature, scope, and purposes of the collection and processing of personal data on the KPOPPERS platform (hereinafter "Platform"). It applies to all services offered under the domain kpoppers.app and related subdomains.

Personal data within the meaning of Art. 4(1) GDPR means any information relating to an identified or identifiable natural person. This includes, for example, names, email addresses, IP addresses, and usage behavior.

We process personal data only in compliance with the applicable data protection regulations, in particular the GDPR, the German Federal Data Protection Act (BDSG), and the German Telecommunications-Telemedia Data Protection Act (TTDSG).

3. Legal Bases for Processing

We process personal data on the following legal bases, depending on the specific processing activity:

  • Art. 6(1)(a) GDPR — Consent: Where you have given express consent for a specific processing purpose (e.g., optional analytics cookies, marketing communications). You may withdraw consent at any time with effect for the future.
  • Art. 6(1)(b) GDPR — Performance of a contract: Where processing is necessary for the performance of a contract with you or in order to take steps at your request prior to entering into a contract. This applies in particular to account creation, subscription management, and the provision of the Platform's core features.
  • Art. 6(1)(c) GDPR — Legal obligation: Where processing is necessary for compliance with a legal obligation to which we are subject, in particular tax and commercial law retention obligations under German law (§ 147 AO, § 257 HGB).
  • Art. 6(1)(f) GDPR — Legitimate interests: Where processing is necessary for the purposes of a legitimate interest pursued by us or a third party, provided that your interests, fundamental rights, and freedoms do not override such interest. Our legitimate interests include platform security, fraud prevention, service optimization, and the assertion or defense of legal claims.

The specific legal basis for each processing activity is indicated in the relevant sections below.

4. Provision of the Website and Server Log Files

When you access the Platform, our hosting provider automatically collects and stores information in so-called server log files, which your browser transmits automatically. This includes:

  • IP address of the requesting device
  • Date and time of the request
  • URL and HTTP method of the request
  • HTTP status code returned by the server
  • Volume of data transferred
  • Referring URL (previously visited page)
  • Browser type and version, operating system

This data is processed for the purpose of ensuring the secure and stable operation of the Platform, for error analysis, and for the prevention and investigation of abuse. The legal basis is Art. 6(1)(f) GDPR. Our legitimate interest lies in the provision of a technically functioning and secure platform.

Server log data is not combined with other data sources. Log data is automatically deleted after 30 days unless a longer retention is required for a specific investigation of abuse or a security incident.

5. Account Registration and User Account

To use the Platform's features beyond browsing, you must create a user account. During registration, we collect the following data:

  • Email address
  • Username (chosen by you)
  • Encrypted password hash (if registering with email/password)
  • Date and time of registration

If you register using Google OAuth, Google transmits your name, email address, and profile picture URL to us. We do not receive your Google password. Google's privacy policy applies to data processed by Google in connection with the OAuth process.

Your account data is processed for the purpose of creating and managing your user account, authenticating your identity, and providing you with access to the Platform's features. The legal basis is Art. 6(1)(b) GDPR (performance of a contract).

Your account data is stored for the duration of your account. Upon account deletion, your data is removed in accordance with Section 12 of this policy.

6. Subscription and Payment Data

When you subscribe to an AI idol, payment processing is handled exclusively by Stripe, Inc. (hereinafter "Stripe"). We do not collect, store, or process your credit card number, bank account details, or other payment instrument data on our servers. This data is entered directly on Stripe's payment page or through Stripe's embedded payment elements and transmitted to Stripe in encrypted form.

We receive the following data from Stripe:

  • Stripe customer ID
  • Subscription ID, status, and billing period
  • Payment method type (e.g., "card") and last four digits of the card
  • Transaction amounts, currency, and timestamps
  • Invoice IDs and payment success/failure status

This data is processed for the purpose of managing your subscriptions, providing access to paid features, issuing invoices, and handling billing disputes. The legal basis is Art. 6(1)(b) GDPR (performance of a contract).

Stripe processes payment data as an independent controller for its own fraud prevention and compliance purposes. Stripe is certified under the PCI DSS (Payment Card Industry Data Security Standard). For details on Stripe's data processing, please refer to Stripe's privacy policy at stripe.com/privacy.

Invoice and transaction data is retained for the statutory retention period of 10 years under German tax law (§ 147 AO) and 6 years under German commercial law (§ 257 HGB), beginning at the end of the calendar year in which the transaction occurred.

7. Platform Usage and AI Interaction Data

When you use the Platform, we collect and process data about your interactions for the purpose of providing the service and improving the user experience. This includes:

7.1 General Usage Data

  • Pages and features accessed, with timestamps
  • Idol profiles viewed, subscriptions held
  • Interaction frequency and session duration
  • Device type, browser version, screen resolution
  • Language and region settings

The legal basis is Art. 6(1)(f) GDPR. Our legitimate interest is the improvement and optimization of the Platform.

7.2 Messaging and Chat Data

Messages you send to AI idols are processed to generate personalized responses. Your message content and the generated responses are stored in your account for the purpose of maintaining conversation history and continuity. The legal basis is Art. 6(1)(b) GDPR (performance of a contract).

7.3 Voice Calls and ASMR Content

When you use voice call or ASMR features, your interaction preferences and session metadata (duration, timestamps) are stored. Audio generated for you by AI is processed on third-party infrastructure (see Section 9) and delivered to you through the Platform. The legal basis is Art. 6(1)(b) GDPR.

7.4 Music and Content Preferences

Data about the music you listen to, content you favorite, and features you use is processed to personalize your experience and provide recommendations. The legal basis is Art. 6(1)(f) GDPR (legitimate interest in service personalization).

8. Cookies and Similar Technologies

The Platform uses cookies and similar technologies (e.g., local storage) to ensure its functionality, enhance usability, and analyze usage. Cookies are small text files stored on your device by your browser.

8.1 Strictly Necessary Cookies

These cookies are essential for the operation of the Platform. They enable core functionalities such as authentication, session management, and security features (e.g., CSRF protection). Without these cookies, the Platform cannot function properly. The legal basis is Art. 6(1)(b) GDPR and § 25(2) TTDSG (strictly necessary cookies).

  • Session cookie — Maintains your authenticated session. Expires when you close the browser or after 30 days of inactivity.
  • Theme preference — Stores your light/dark mode selection. Persistent.

8.2 Analytics Cookies

We use Vercel Analytics to collect anonymized usage data for the purpose of understanding how visitors interact with the Platform and improving the service. Vercel Analytics is designed to be privacy-friendly and does not use cookies for cross-site tracking. Data collected includes page views, referrers, and browser information. The legal basis is Art. 6(1)(f) GDPR (legitimate interest in service optimization). You may object to this processing at any time (see Section 11).

You can configure your browser to reject all or certain cookies, or to notify you when cookies are set. Please note that disabling strictly necessary cookies may impair the functionality of the Platform.

9. Third-Party Service Providers (Data Processors)

We engage third-party service providers to operate the Platform. Where these providers process personal data on our behalf, data processing agreements pursuant to Art. 28 GDPR are in place. Where providers are located outside the EU/EEA, data transfers are safeguarded by EU Standard Contractual Clauses (Art. 46(2)(c) GDPR) or an adequacy decision of the European Commission (Art. 45 GDPR).

9.1 Stripe, Inc. — Payment Processing

Provider: Stripe, Inc., 354 Oyster Point Blvd, South San Francisco, CA 94080, USA. Purpose: Processing subscription payments, managing billing, fraud prevention. Data processed: Payment method details, transaction data, IP address. Transfer basis: EU Standard Contractual Clauses; Stripe is PCI DSS Level 1 certified.

9.2 Google LLC — OAuth Authentication

Provider: Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland. Purpose: Optional user authentication via Google sign-in. Data processed: Name, email address, profile picture URL transmitted during the OAuth flow. Transfer basis: EU Standard Contractual Clauses for processing by Google LLC (USA).

9.3 Vercel, Inc. — Hosting and Analytics

Provider: Vercel, Inc., 340 S Lemon Ave #4133, Walnut, CA 91789, USA. Purpose: Website hosting, content delivery, and anonymized analytics. Data processed: IP address (anonymized for analytics), HTTP request data, page views. Transfer basis: EU Standard Contractual Clauses.

9.4 Neon, Inc. — Database Hosting

Provider: Neon, Inc., San Francisco, CA, USA. Purpose: Hosting the Platform's PostgreSQL database containing user accounts, subscription data, and interaction data. Data processed: All user data stored in the database. Transfer basis: EU Standard Contractual Clauses. Data is encrypted at rest and in transit.

9.5 ElevenLabs, Inc. — Voice and ASMR Generation

Provider: ElevenLabs, Inc., New York, USA. Purpose: Generating AI voice messages and ASMR audio content for AI idol interactions. Data processed: Text prompts and interaction context used to generate audio; no direct user personal data is transmitted. Transfer basis: EU Standard Contractual Clauses.

9.6 OpenAI, Inc. — AI Content Generation

Provider: OpenAI, Inc., San Francisco, CA, USA. Purpose: Generating AI idol chat responses, fan fiction, and personalized content. Data processed: Conversation context and prompts (which may include user messages). Transfer basis: EU Standard Contractual Clauses. OpenAI does not use API inputs for model training.

9.7 Google LLC — Gemini AI Content Generation

Provider: Google Ireland Limited / Google LLC. Purpose: Alternative AI content generation for idol interactions and text-based content. Data processed: Conversation context and prompts. Transfer basis: EU Standard Contractual Clauses.

9.8 Upstash, Inc. — Rate Limiting and Caching

Provider: Upstash, Inc., San Francisco, CA, USA. Purpose: API rate limiting to prevent abuse and caching for performance optimization. Data processed: Hashed IP addresses and request metadata for rate limiting. Transfer basis: EU Standard Contractual Clauses. Data is automatically expired after short retention periods.

9.9 Resend, Inc. — Transactional Email

Provider: Resend, Inc., San Francisco, CA, USA. Purpose: Sending transactional emails (account verification, subscription confirmations, notifications). Data processed: Email address, email subject, and content. Transfer basis: EU Standard Contractual Clauses.

10. International Data Transfers

Several of our service providers are located in the United States of America or other countries outside the European Economic Area (EEA). Where personal data is transferred to such countries, we ensure that an adequate level of data protection is maintained through one or more of the following safeguards pursuant to Chapter V of the GDPR:

  • EU Standard Contractual Clauses (Art. 46(2)(c) GDPR): We have concluded Standard Contractual Clauses as adopted by the European Commission with each service provider located outside the EEA.
  • Adequacy decisions (Art. 45 GDPR): Where applicable, transfers are based on adequacy decisions by the European Commission confirming that the recipient country ensures an adequate level of data protection.
  • Supplementary measures: Where required by the circumstances, additional technical (e.g., encryption) and organizational measures are implemented to ensure the effectiveness of the transfer safeguards.

You may obtain a copy of the safeguards in place by contacting us using the details in Section 1.

11. Your Rights as a Data Subject

Under the GDPR, you have the following rights with respect to your personal data. To exercise any of these rights, please contact us using the details in Section 1. We will respond to your request within one month. This period may be extended by a further two months where necessary, taking into account the complexity and number of requests. We will inform you of any such extension within one month of receipt of the request.

11.1 Right of Access (Art. 15 GDPR)

You have the right to obtain confirmation as to whether personal data concerning you is being processed and, where that is the case, access to the personal data and the following information: the purposes of the processing, the categories of personal data concerned, the recipients or categories of recipients, the envisaged retention period, the existence of your other rights, and information about the source of the data. You are entitled to receive a copy of the personal data undergoing processing free of charge.

11.2 Right to Rectification (Art. 16 GDPR)

You have the right to obtain without undue delay the rectification of inaccurate personal data concerning you. Taking into account the purposes of the processing, you have the right to have incomplete personal data completed, including by means of providing a supplementary statement.

11.3 Right to Erasure (Art. 17 GDPR)

You have the right to obtain the erasure of personal data concerning you without undue delay where one of the following grounds applies: the personal data is no longer necessary for the purposes for which it was collected; you withdraw consent and there is no other legal ground for the processing; you object to the processing and there are no overriding legitimate grounds; the personal data has been unlawfully processed; or the personal data has to be erased for compliance with a legal obligation. This right does not apply to the extent that processing is necessary for compliance with a legal obligation or for the establishment, exercise, or defense of legal claims.

11.4 Right to Restriction of Processing (Art. 18 GDPR)

You have the right to obtain restriction of processing where: you contest the accuracy of the personal data (for a period enabling us to verify the accuracy); the processing is unlawful and you oppose erasure and request restriction instead; we no longer need the personal data but you require it for the establishment, exercise, or defense of legal claims; or you have objected to processing pending the verification whether our legitimate grounds override yours.

11.5 Right to Data Portability (Art. 20 GDPR)

You have the right to receive the personal data concerning you, which you have provided to us, in a structured, commonly used, and machine-readable format, and have the right to transmit that data to another controller without hindrance from us, where the processing is based on consent or on a contract and the processing is carried out by automated means. You may also request that we transmit the data directly to another controller, where technically feasible.

11.6 Right to Object (Art. 21 GDPR)

You have the right to object, on grounds relating to your particular situation, at any time to the processing of personal data concerning you which is based on Art. 6(1)(e) or (f) GDPR, including profiling based on those provisions. We shall no longer process the personal data unless we demonstrate compelling legitimate grounds for the processing which override your interests, rights, and freedoms, or for the establishment, exercise, or defense of legal claims. Where personal data is processed for direct marketing purposes, you have the right to object at any time to the processing of personal data concerning you for such marketing, and we will cease such processing without exception.

11.7 Right to Withdraw Consent (Art. 7(3) GDPR)

Where processing is based on your consent, you have the right to withdraw consent at any time. The withdrawal of consent shall not affect the lawfulness of processing based on consent before its withdrawal. You may withdraw consent by contacting us or by using the relevant functionality in the Platform (e.g., account settings).

11.8 Right to Lodge a Complaint (Art. 77 GDPR)

Without prejudice to any other administrative or judicial remedy, you have the right to lodge a complaint with a supervisory authority, in particular in the Member State of your habitual residence, place of work, or place of the alleged infringement, if you consider that the processing of personal data relating to you infringes the GDPR. The competent supervisory authority for Hamburg is:

Der Hamburgische Beauftragte für Datenschutz und Informationsfreiheit

Ludwig-Erhard-Str. 22, 7. OG

20459 Hamburg, Germany

12. Data Retention

We retain your personal data only for as long as is necessary to fulfill the purposes for which it was collected, unless a longer retention period is required or permitted by law. The specific retention periods are as follows:

  • Account data: Stored for the duration of your account. Upon account deletion, personal data is anonymized or deleted within 30 days, except where statutory retention obligations apply.
  • Conversation and interaction data: Stored for the duration of your account. Deleted upon account deletion.
  • Payment and invoice data: Retained for 10 years from the end of the calendar year of the transaction pursuant to § 147 AO (Abgabenordnung) and § 257 HGB (Handelsgesetzbuch).
  • Server log files: Automatically deleted after 30 days.
  • Rate limiting data (Upstash): Automatically expired after minutes to hours, depending on the rate limit window.
  • Analytics data (Vercel): Aggregated and anonymized; individual data points are not retained beyond the analytics retention period.

After expiry of the applicable retention period, data is deleted or irreversibly anonymized, unless further retention is necessary for the establishment, exercise, or defense of legal claims.

13. Data Security

We implement appropriate technical and organizational measures pursuant to Art. 32 GDPR to ensure a level of security appropriate to the risk. These measures include, but are not limited to:

  • Encryption in transit: All data transmitted between your device and our servers is encrypted using TLS 1.2 or higher.
  • Encryption at rest: Database data is encrypted at rest using AES-256 encryption.
  • Authentication security: Passwords are hashed using industry-standard algorithms (bcrypt). Sessions are managed with secure, HTTP-only cookies.
  • Access controls: Access to personal data is restricted to authorized personnel on a need-to-know basis.
  • Rate limiting: API endpoints are protected against abuse through rate limiting.
  • Regular updates: Software dependencies and infrastructure are kept up to date with security patches.

Despite these measures, no method of transmission over the Internet or method of electronic storage is completely secure. We cannot guarantee absolute security of your data.

14. Automated Decision-Making and Profiling

The Platform uses AI systems to generate content (chat responses, voice messages, music, ASMR). These AI systems process your inputs to produce personalized responses, but they do not make decisions that produce legal effects concerning you or similarly significantly affect you within the meaning of Art. 22 GDPR.

We do not engage in automated decision-making based solely on automated processing, including profiling, which produces legal effects or similarly significantly affects you. Content recommendations and personalization are based on your usage patterns but do not restrict your access to any features or content for which you hold a valid subscription.

15. Data Processing of Minors

The Platform is intended for users aged 16 and older. We do not knowingly collect personal data from children under the age of 16. If we become aware that we have collected personal data from a child under 16 without verification of parental consent, we will take steps to delete that data as soon as possible.

If you are a parent or guardian and believe that your child under 16 has provided us with personal data, please contact us using the details in Section 1.

16. Changes to This Privacy Policy

We reserve the right to update this privacy policy from time to time to reflect changes in our data processing practices, legal requirements, or technical developments. The current version is always available on the Platform.

Material changes that affect the nature, scope, or purposes of data processing will be communicated to you via email or through a prominent notice on the Platform before they take effect. Where changes require your consent, we will obtain such consent before applying the changes.

The "Last updated" date at the top of this policy indicates when it was last revised.

17. Contact

For any questions regarding this privacy policy, to exercise your rights as a data subject, or to report a data protection concern, please contact:

Tran Consulting UG (haftungsbeschränkt)

Ericusspitze 4

20457 Hamburg, Germany

Email: info[at]tranconsulting.de

We will endeavor to respond to all legitimate requests within one month. Occasionally it may take longer if your request is particularly complex or you have made a number of requests.

Privacy Policy — KPOPPERS | Kpoppers