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Terms of use and sale

Last updated: July 12, 2026
This English translation is provided for convenience only. In case of discrepancy, the French version prevails.

1. Purpose

These terms govern access to the selyor.com website, account creation, use of the Selyor backtesting software (the "Application") and, once opened, the subscription to paid plans. They are entered into between the user and Stark Consulting (see legal notice). Using the services implies full acceptance of these terms.

2. User account

An account is required to use the Application. The user warrants the accuracy of the information provided, is solely responsible for the confidentiality of their credentials and for any activity carried out from their account, and declares being of legal age and capacity.

3. Beta phase

The service is currently offered as a beta version: it is provided "as is", may evolve, be interrupted or modified at any time, and features made freely available during this phase (notably market data access) may be reserved for paid plans at commercial launch, without giving rise to any compensation.

4. Software license

Stark Consulting grants the user a personal, non-exclusive, non-transferable and revocable license to install and use the Application on their own devices, for their own needs. The following are prohibited in particular: resale, rental, lending, making available to third parties, as well as decompilation or reverse engineering except in the cases strictly provided for by law.

5. Market data

Historical data accessible through the Selyor data server comes from third-party providers and is made available exclusively for the user's personal use within the Application (analysis, backtesting). Redistributing, reselling, publishing, mass-extracting the data or building a competing database is strictly prohibited. Technical quotas may apply. Data is provided "as is", with no guarantee of completeness, accuracy or continuity.

6. Risk warning

Selyor is not an investment advisor. The Application is a simulation and statistical analysis tool. Backtest results are simulations on historical data: they do not necessarily reflect all real market conditions (liquidity, slippage, fees, outages) and are in no way indicative of future performance. Any investment decision is the sole responsibility of the user, who is invited to consult a licensed professional. Trading financial instruments involves a risk of loss which may exceed the invested capital.

7. Subscriptions and prices

After the beta, certain features will be available through paid subscriptions whose prices, expressed in euros including all taxes, will be displayed on the website before any subscription. Unless otherwise stated, subscriptions renew automatically per period (monthly or yearly) and may be cancelled at any time from the account area; cancellation takes effect at the end of the current, already paid, period, which remains due.

8. Right of withdrawal

In accordance with article L221-28 of the French Consumer Code, the 14-day right of withdrawal cannot be exercised for digital content supplied immediately upon subscription: by subscribing, the user requests immediate performance of the service and expressly waives their right of withdrawal, which is recalled at the time of purchase.

9. Suspension and termination

Stark Consulting may suspend or terminate a user's access in the event of a breach of these terms (in particular articles 4 and 5), fraud, non-payment or use compromising the security or integrity of the service, after notice where circumstances permit.

10. Liability

To the extent permitted by law, Stark Consulting's total liability, all causes combined, is capped at the amount actually paid by the user over the last twelve months. Stark Consulting shall in no event be liable for trading losses, loss of profits, loss of data or indirect damages. Nothing in these terms excludes liability that cannot legally be excluded.

11. Intellectual property

The Application, the website and their contents remain the exclusive property of Stark Consulting. Strategies, parameters and data files imported by the user remain theirs.

12. Personal data

The processing of personal data is described in the privacy policy.

13. Changes

These terms may be modified; the applicable version is the one in force on the day of use, and subscribed users are informed of any substantial change before it takes effect.

14. Governing law and disputes

These terms are governed by French law. In the event of a dispute, consumers may resort free of charge to a consumer mediator or to the European online dispute resolution platform (ec.europa.eu/consumers/odr). Failing amicable resolution, the competent courts will be seized under ordinary law.