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Privacy Policy

Version: 2026-05-11

1. Data Controller

The controller responsible for processing personal data for PolySimulator is:

Erik Eremenko

Auweg 38, 85748 Garching b. München, Germany

[email protected]

2. Scope and Short Summary

This Privacy Policy explains how PolySimulator processes personal data when you use our website, simulated trading features, accounts, paid plans, API beta, waitlists, alerts, analytics, support, and related services. It is intended to be a concrete GDPR Article 13 notice rather than a generic checklist.

3. Processing Activities, Legal Bases, Recipients, and Retention

The table below maps our main processing activities to data categories, legal bases, recipients, and retention periods. Exact retention can vary if we must preserve records for legal claims, security incidents, tax/accounting obligations, backups, or abuse investigations.

Where we rely on legitimate interests under Art. 6(1)(f) GDPR, our interest is operating a secure, stable, and fairly administered Service and preventing fraud, unauthorized access, abuse, manipulation, outages, and harm to users or the platform.

PurposeData CategoriesLegal BasisRecipientsRetention
Account creation, authentication, and session managementEmail address, name or profile data from OAuth providers, account IDs, login/session metadata, IP address, device/browser basics.Art. 6(1)(b) GDPR for account access; Art. 6(1)(f) GDPR for account security and abuse prevention.Supabase Auth and the OAuth provider you choose, plus hosting/security providers.For the life of the account; self-service deletion requests normally use a 14-day grace period before final anonymization; session/security logs are normally kept for up to 30 days unless needed for security or legal reasons.
Simulated trading, virtual wallets, seasons, leaderboards, and account historyUser ID, simulated balances, orders, fills, positions, P&L, season entries, leaderboard records, portfolio and API balance state.Art. 6(1)(b) GDPR to provide the Service; Art. 6(1)(f) GDPR for fair operation, ranking integrity, and abuse prevention.PolySimulator infrastructure, database, monitoring, and security providers.While the account exists; fraud, dispute, and integrity records may be retained for up to 3 years after closure where needed.
Paid plans, billing, refunds, chargebacks, and entitlement checksBilling identifiers, plan, purchase status, invoices, tax/accounting metadata, refund and dispute records. We do not store full card numbers.Art. 6(1)(b) GDPR for purchases/subscriptions; Art. 6(1)(c) GDPR for tax and accounting duties.Stripe and infrastructure/accounting systems where required.Billing and tax records are generally retained for 10 years under German statutory retention rules.
API access, API keys, rate limits, beta programs, and developer supportAPI keys, user/account ID, request metadata, IP addresses, usage volumes, rate-limit state, beta status, onboarding progress, feedback, and support messages.Art. 6(1)(b) GDPR for API access; Art. 6(1)(f) GDPR for security, stability, rate limits, abuse prevention, and beta administration.Hosting, database, logging, monitoring, communications, and support providers.API keys while active; API/security logs normally up to 90 days, longer for incidents, abuse, disputes, or legal obligations.
Waitlists and beta-access programsEmail address, IP address, consent timestamp, selected program, invitation status, reminder and feedback-follow-up status.Art. 6(1)(a) GDPR where you sign up or consent; Art. 6(1)(f) GDPR for fraud prevention and program integrity.Hosting/database providers and communications providers used for program email or support.Until withdrawal, or normally up to 6 months after the relevant program launch/end; suppression records may be retained to honor opt-outs.
Service, account, and configured alert communicationsEmail address, user ID, account status, billing/API/season/beta status, alert preferences, delivery metadata, support context.Art. 6(1)(b) GDPR for account/service messages; Art. 6(1)(f) GDPR for security, reliability, support, and configured alerts; Art. 6(1)(c) GDPR for legal notices where required.Email, support, Telegram, and infrastructure providers depending on the channel you use or configure.For the account life or as needed for support, security, disputes, legal notices, and suppression records.
Marketing and product-update communicationsEmail address, consent or customer-relationship status, preference and unsubscribe state, campaign delivery metadata, and optional engagement data.Art. 6(1)(a) GDPR for consent-based marketing; a narrow existing-customer exception only where legally valid; Art. 6(1)(f) GDPR to maintain suppression lists.Email/communications providers and consent or suppression-management systems.Until consent withdrawal or objection; suppression records are retained as needed to ensure we do not contact you again for that purpose.
Cookies, analytics, product diagnostics, and session recording where enabledConsent state, pseudonymous visitor/session IDs, pageviews, clicks, device/browser data, referrers, performance events, and session recordings where enabled.Consent under Art. 6(1)(a) GDPR and applicable cookie rules for optional analytics, PostHog, Clarity, GA/GTM, Plausible, and first-party pageview tracking; Art. 6(1)(f) GDPR for strictly necessary security logs.Google, PostHog, Microsoft Clarity, Plausible, Axiom, Grafana/Loki, Cloudflare, and first-party analytics systems where enabled.Consent records and analytics identifiers normally up to 24 months; raw security logs normally 30 days unless needed longer.
AI-assisted content, summaries, support tooling, and trading analyticsMarket context, public data, simulated portfolio/trade context, prompts, outputs, and limited account context where needed to provide the feature.Art. 6(1)(b) GDPR where AI features are part of the Service; Art. 6(1)(f) GDPR for product improvement and support tooling, with data minimization.OpenAI API and infrastructure/monitoring providers. We aim to avoid sending unnecessary personal data in prompts.Feature logs normally 30-90 days unless saved to the account, needed for safety, or required for legal reasons.
Support, contact forms, feedback, and legal requestsName, email address, message content, attachments if provided, account context, timestamps, and support history.Art. 6(1)(b) GDPR for account/support requests; Art. 6(1)(f) GDPR for response, documentation, and dispute handling; Art. 6(1)(c) GDPR for legal requests.Formspree, email/support providers, and hosting/logging systems.Usually up to 3 years after final response unless a shorter or longer legal period applies.

4. Communications, Marketing, and Your Right to Object

Service messages about account access, security, authentication, billing, legal changes, API/beta access, season resets, support, and alerts you configure are processed where needed for contract performance, security, legal compliance, or reliable delivery of the Service.

Waitlist and beta-program emails are processed to manage the program you selected, including launch notification, access invitations, onboarding instructions, program-related reminders, and feedback follow-up.

Marketing and product-update emails are sent only with consent or, where genuinely available, a narrow existing-customer exception. Prospects and waitlist contacts are not automatically treated as marketing recipients.

We rely on an existing-customer exception only where we obtained the email address in connection with a purchase, market our own similar products or services, informed you at collection about advertising use and your right to object, include a simple free opt-out in each message, and you have not objected.

Direct Marketing Objection

You have the right to object at any time to processing of your personal data for direct marketing. Once you object, we will no longer process your data for direct marketing. You can use unsubscribe links in emails, the mailing-list controls in your profile, or contact [email protected].

5. Cookies, Analytics, and Consent Behavior

Our consent banner/CMP stores your choices against the current legal version. Essential cookies and local storage are required for login, security, consent state, and core functionality and cannot be disabled while using the Service.

  • Our first-party page-view measurement (the only first-party analytics we currently run) operates consent-free under the CNIL/DSK exempted-reach-measurement framework. It collects only path, country, and a coarse browser/OS/device-type triple; it never reads your raw IP, full User-Agent, or account identifier. You can opt out at any time via Analytics opt-out.
  • Optional third-party analytics tools such as Google Tag Manager/GA4, PostHog, Microsoft Clarity, and Plausible load only after analytics consent. These are not currently active by default.
  • Marketing storage and Google Consent Mode advertising signals are denied by default and are set to granted only after marketing consent.
  • Server, security, error, and abuse-prevention logs run independently of optional analytics consent where needed for operation and security.
  • You can change your choices through .

6. Providers, Processors, Controllers, and External Third Parties

The provider inventory below separates currently active or feature-conditional providers from planned/not-yet-live providers. Notes such as "where enabled" mean the provider is used only for the relevant feature. We update this page for material changes.

Authentication

Supabase acts as our auth processor; OAuth providers act independently for their own login services.

  • Supabase Auth

    Authentication, account sessions, email sign-in, and OAuth session handling

    Supabase Inc. · USA

    Privacy
  • Google Sign-In

    Single Sign-On Authentication

    Google Ireland Limited · Ireland

    Privacy
  • GitHub OAuth

    Single Sign-On Authentication

    GitHub, Inc. · USA

    Privacy
  • Apple Sign-In

    Single Sign-On Authentication

    Apple Inc. · USA

    Privacy
  • Discord OAuth

    Optional single sign-on authentication where enabled

    Discord Inc. · USA

    Only used if the Discord sign-in provider is enabled.

    Privacy

Hosting and Infrastructure

Mostly processors or infrastructure providers used to host, protect, store, deploy, and relay the Service.

  • Dokploy

    Application deployment and service orchestration

    Self-hosted Dokploy instance · Germany / USA infrastructure

  • Hetzner

    Server infrastructure for production, staging, monitoring, and related services

    Hetzner Online GmbH · Germany / EU and selected non-EU regions

    Privacy
  • Hostinger

    Hosting infrastructure for selected staging, legacy, or auxiliary deployments

    Hostinger International Ltd. · EU / international

    Privacy
  • Supabase PostgreSQL

    Primary managed database and auth-adjacent backend services

    Supabase Inc. · USA

    Privacy
  • Cloudflare

    DNS, CDN, proxying, DDoS protection, security filtering, and request metadata forwarding

    Cloudflare, Inc. · USA

    Privacy
  • Cloudflare R2

    Object storage for market archives and datalake snapshots

    Cloudflare, Inc. · USA / global network

    Used primarily for market/archive data; user personal data should not be intentionally stored there unless necessary.

    Privacy
  • Fly.io

    Price relay worker hosting for real-time market and asset price updates

    Fly.io · Global infrastructure, currently configured for London region

    Privacy

Payments

Payment processors and related independent financial-services providers for checkout and billing.

  • Stripe

    Subscriptions, top-ups, support payments, checkout, customer portal, refunds, and chargeback handling

    Stripe Payments Europe, Ltd. / Stripe group companies · EU / USA / international

    Privacy

Communications and Support

Processors and external platforms used for support, alerts, feedback, community links, and configured email delivery.

  • Formspree

    Contact and feedback form delivery

    Formspree, Inc. · USA

    Privacy
  • Resend

    Transactional email delivery (legal updates, account notifications, season-event service notices, configured-alert dispatch)

    Resend, Inc. · USA

    Used as the primary outbound ESP for service notices via send.polysimulator.com. Per-recipient deliveries; the message content is the same for every recipient on a given campaign.

    Privacy
  • Telegram Bot API

    User-enabled Telegram alert delivery and account linking

    Telegram Messenger Inc. / Telegram group companies · International

    Privacy
  • Purelymail SMTP

    Monitoring email and email delivery where configured

    Purelymail · USA

    Privacy
  • Discord

    Community links and optional community interaction

    Discord Inc. · USA

    Community data is processed by Discord when users click links, join, or interact there.

    Privacy

Analytics, Logs, and Diagnostics

Processors and telemetry tools used for product analytics, reliability, security, and diagnostics.

  • First-Party Analytics

    Pageview, funnel, product usage, reliability, and abuse-prevention analytics

    PolySimulator · Germany / USA infrastructure

    Includes local/session storage identifiers such as ps_vid / ps_sid, request metadata, and optional account identifiers after analytics consent.

    Privacy
  • Google Analytics 4 (GA4)

    Web Analytics and Audience Measurement

    Google Ireland Limited · Ireland

    Privacy
  • Google Tag Manager

    Tag Management and Analytics Integration

    Google Ireland Limited · Ireland

    Privacy
  • PostHog

    Product Analytics and Session Recording

    PostHog, Inc. · USA

    Privacy
  • Microsoft Clarity

    Session Recordings and Heatmaps

    Microsoft Corporation · USA

    Privacy
  • Plausible Analytics

    Privacy-Friendly Web Analytics

    Plausible Insights OÜ · Estonia (EU)

    Privacy
  • Axiom

    Log management, errors, performance diagnostics, and web vitals monitoring

    Axiom, Inc. · USA

    Privacy
  • Grafana, Loki, Alloy, and Prometheus

    Operational monitoring, metrics, logs, launch dashboards, alerting, and incident diagnostics

    Self-hosted Grafana Labs stack / Grafana Labs components · Germany / USA infrastructure

    Used for operational telemetry and logs; access is limited to operators.

    Privacy
  • CounterAPI

    Lightweight public interest counters where enabled

    CounterAPI · External service

    Used only on pages/components where the preview-interest counter is enabled.

    Privacy

Market, Price, News, and Context Data

External data providers. We generally read public data server-side and avoid sending account data to these providers.

  • Polymarket API

    Market Data and Pricing Information (Read-Only)

    Polymarket · USA

    We only read public market data. No user data is sent to Polymarket.

    Privacy
  • Binance Market Data

    Real-time crypto reference prices for simulation and charts

    Binance group companies · International

    Used by the Fly.io price relay for public asset prices.

    Privacy
  • Polygon.io

    Optional stock/index reference prices for simulation and charts

    Polygon.io, Inc. · USA

    Used only where stock/index price relay features are configured.

    Privacy
  • Chainlink Data Feeds / Polygon RPC

    Reference-price and settlement-price reads for crypto-related simulations

    Chainlink ecosystem and configured Polygon RPC provider such as Alchemy · International

    Used server-side for public blockchain/reference data reads; end-user personal data is not intentionally sent.

    Privacy
  • CoinGecko API and CDN

    Crypto reference price fallback and public crypto icon assets

    CoinGecko · International

    Used as a tertiary fallback when real-time crypto price sources are stale and for public token imagery.

    Privacy
  • Google News

    News search and article discovery for market context

    Google Ireland Limited / Google LLC · EU / USA

    Privacy
  • Open-Meteo

    Weather forecasts and geocoding for weather market context

    Open-Meteo · EU

    Privacy
  • USGS Earthquake API

    Public earthquake data for weather/geophysical market context

    United States Geological Survey · USA

    Privacy

AI and Content Tools

AI providers for planned or feature-gated summaries, explanations, support tooling, and trading analytics.

Planned / Not Yet Live Providers

  • OpenAI API

    Planned AI-assisted content generation, market summaries, trading analytics, explanations, and support tooling

    OpenAI Ireland Ltd. / OpenAI group companies · EU / USA / international

    Planned / not yet live. Prompts and outputs may be processed under OpenAI API terms and a data processing addendum; we intend to minimize personal data in prompts.

    Privacy

Fonts, Media, and UI Assets

External asset providers for fonts, avatars, flags, logos, and interface media.

  • Google Fonts (Inter)

    Typography and Font Rendering

    Google Ireland Limited · Ireland

    The app currently loads font files from fonts.gstatic.com.

    Privacy
  • ESPN CDN

    Sports team logos and related visual assets

    ESPN Internet Ventures / The Walt Disney Company · USA

    Privacy
  • DiceBear

    Fallback avatar generation

    DiceBear / related maintainers · International

    Privacy
  • FlagCDN

    Country flag assets where displayed

    FlagCDN / external CDN provider · International

    Privacy

Social Links and Sharing

Independent external platforms when you click links, share content, or interact there.

  • X (Twitter)

    Social Sharing and Embeds

    X Corp. · USA

    Privacy
  • Telegram

    Social sharing and community links

    Telegram Messenger Inc. / Telegram group companies · International

    Privacy

7. Waitlists and Beta-Access Programs

When you join a waitlist or beta-access program, we process your email address, IP address, timestamp, selected program, invitation status, and program-related follow-up status.

The purpose is to manage the relevant waitlist or beta program, including launch notification, access invitation, onboarding instructions, reminders related to the selected program, and feedback follow-up directly related to that program. This is not general marketing consent.

You can withdraw consent at any time through polysimulator.com/waitlist/unsubscribe or by emailing [email protected].

8. International Transfers

Some providers are located outside the EEA or use international infrastructure, including Supabase, Cloudflare, Stripe, Google, GitHub, Discord, PostHog, Microsoft, Axiom, Fly.io, Resend, OpenAI, and certain data or asset providers. Where required, we rely on adequacy decisions, the EU-US Data Privacy Framework, Standard Contractual Clauses, data-processing agreements, and additional technical/organizational safeguards. Provider roles and locations are listed above.

9. Retention Details

Data CategoriesPeriod
Account profile and authentication recordsAccount lifetime, then normally a 14-day self-service deletion grace period before deletion or anonymization unless retention is required.
Simulated trading history, leaderboards, seasons, and wallet recordsAccount lifetime; integrity, dispute, and abuse records may be retained up to 3 years.
Billing, invoices, tax, refund, and chargeback recordsGenerally 10 years under German statutory retention duties.
API keys and API usage/security logsKeys while active; logs normally up to 90 days, longer for incidents or legal needs.
Waitlist and beta-program dataUntil withdrawal or normally up to 6 months after the relevant program launch/end.
Marketing preferences, unsubscribe, and suppression recordsUntil withdrawal/objection; suppression records as long as needed to honor opt-outs.
Consent records, cookies, ps_vid/ps_sid, and analytics identifiersFirst-party reach-measurement identifiers (ps_vid / ps_sid) rotate at least every 13 months. Other consent records: up to 24 months unless you change preferences earlier.
First-party page-view events (path, country, derived device family)Maximum 13 months. A daily server-side task automatically deletes older rows. Aggregated counts may be retained longer because they are already anonymous.
Server, security, and error logsNormally 30 days; longer for incidents, abuse, disputes, or legal obligations.
Support, feedback, and legal correspondenceUsually up to 3 years after final response.

10. Automated Logic

We use automated logic for simulated orders, leaderboard rankings, season rules, API rate limits, API beta access, entitlement and plan checks, abuse detection, and security controls. This logic does not produce legal effects or similarly significant effects outside the simulated Service environment. We do not use fully automated profiling for decisions about real-money products.

11. Your GDPR Rights

Subject to GDPR conditions, you have rights of access, rectification, erasure, restriction, portability, objection, withdrawal of consent, and complaint to a supervisory authority.

In particular, you may object to direct marketing at any time. After objection, we will no longer process your data for direct marketing. You can do this from your profile settings or from unsubscribe links in emails.

How to exercise your rights: email [email protected] from the address on your account or use the account deletion control in your profile settings. We respond within one month of receipt under Art. 12(3) GDPR; for particularly complex requests we may extend by two further months and inform you. Self-service deletion requests normally use a 14-day grace period before final anonymization. For erasure requests (Art. 17 GDPR) we anonymise your account and delete or anonymise personal data. We retain certain records where legally required (for example, invoices for 10 years under § 257 HGB / § 147 AO) or necessary for the establishment, exercise, or defence of legal claims (Art. 17(3)(b) and (e) GDPR). Our reply itemises what was erased and what was retained, with the legal basis for retention.

12. Security

  • TLS/SSL encryption in transit.
  • OAuth-based authentication and access controls.
  • Cloudflare protection, monitoring, logging, and abuse detection.
  • Restricted operator access to production systems and logs.

Data breach notification: We notify the competent supervisory authority of a personal-data breach without undue delay and, where feasible, within 72 hours of becoming aware of it, in accordance with Art. 33 GDPR, unless the breach is unlikely to result in a risk to the rights and freedoms of natural persons. Where the breach is likely to result in a high risk to your rights and freedoms, we additionally notify you directly in accordance with Art. 34 GDPR.

13. Supervisory Authority

Bayerisches Landesamt für Datenschutzaufsicht (BayLDA)

Promenade 18, 91522 Ansbach, Germany
www.lda.bayern.de

14. Children

The Service is not intended for children under 16. If you believe a child has provided personal data to us, please contact us.

15. Changes to This Policy

We may update this Privacy Policy when the Service, providers, purposes, or legal requirements change. For material changes, we will provide appropriate notice and update the version date.

16. Contact