General Terms of Service

Full use of the Service requires creating an account. The User must provide accurate information and keep it up to date. The User is responsible for maintaining the confidentiality of their credentials.

The Service is accessible to persons aged at least 13 years. Minors under 18 must obtain authorization from their parents or legal guardians, in particular before making any purchase.

Each user may only hold one account. Creating multiple accounts to circumvent limitations is prohibited.

Prices on the website and the web application are shown in US Dollars (USD). The total amount payable, all taxes included, is displayed on the payment page before you confirm your order. In-app purchases on iOS and Android are priced by Apple or Google in your local currency, as shown in the store before you confirm.

Promotional prices or discount codes (for example a code given to customers of our other apps) apply only under the conditions displayed when they are offered. Current pricing is always displayed on our pricing page.

The monthly subscription is a contract of indefinite duration, without commitment, billed each month: it continues from month to month until you cancel it, which you can do at any time. The annual subscription is concluded for one year; YOUR ANNUAL SUBSCRIPTION WILL AUTOMATICALLY RENEW for one more year at the end of each year, unless you cancel before the renewal date. Each payment is charged to the payment method on file. There is no free trial: the first month or year is charged when you subscribe.

For annual subscriptions, in accordance with Article L215-1 of the French Consumer Code, we inform you by a dedicated email, no earlier than three months and no later than one month before the renewal date, of your right not to renew, with the deadline for doing so shown in a clearly visible box. If this information is not sent to you, you may end the subscription free of charge at any time from the renewal date, and any advance paid after the last renewal is refunded within thirty days of termination, minus the amount corresponding to the service supplied until then.

We may change the price of the subscriptions for future billing periods. We will notify you by email at least 30 days before a new price applies to your subscription; it applies only from your next renewal after that notice, and you can cancel before then. A change never affects a period you have already paid for or a Lifetime purchase.

You can cancel your subscription at any time, without giving reasons and without contacting us:

• Subscribed on the web: in the web application, go to Settings, then Billing, click "Cancel subscription" and confirm on the secure page of our payment processor, Stripe. This online cancellation feature is provided in accordance with Article L215-1-1 of the French Consumer Code.
• Subscribed in the iOS or Android app: from the subscription settings of the App Store or Google Play, as the store handles that subscription.

Cancellation takes effect at the end of the current period: you keep Premium until then and are not charged again. The current period is not refunded, except under the right of withdrawal (Section 9) or where the law provides otherwise.

Effect of cancellation: when your subscription ends, your account reverts to the Free plan. Variations beyond the Free quota become non-trainable (training writes are refused) but remain readable, and Premium library lines go back to their free preview; your training progress, statistics, and forked library courses are preserved server-side and become trainable again automatically if you resubscribe.

When you switch a monthly web subscription to the annual plan, the amount due that day (the annual price minus a credit for the unused part of the month) is shown before you confirm. If a renewal payment fails, our payment processor retries it and you keep Premium for 7 days; after that, Premium is suspended until the payment succeeds.

For purchases made on the web, the seller is ANKT SERVICES. Prices are shown in US Dollars (USD). VAT is calculated at checkout by our payment processor, Stripe: consumers in the European Union pay French VAT at 20%; customers outside the European Union are not charged French VAT. The amount charged, taxes included, is shown before you pay.

Payment is made by card, including through wallets such as Apple Pay or Google Pay, or by another payment method displayed on the checkout page, via Stripe, our PCI-DSS certified payment provider. The Lifetime plan can only be paid by card. We do not store your card numbers. A subscription is charged when you subscribe and then at each renewal; the Lifetime plan is charged once. Your invoices are available from Settings, then Billing, in the web application.

Subscriptions bought in the iOS or Android app are sold and billed by Apple (App Store) or Google (Google Play) under their own terms, which govern payment, renewal, cancellation and refunds for those purchases. Premium bought on the web unlocks the mobile app with the same account, and a subscription bought in a store unlocks the web application.

If you are a consumer, you have 14 days from the conclusion of the contract (the day you subscribe or buy the Lifetime plan on the web) to withdraw from it, without giving reasons and without any penalty. The right applies to the initial purchase, not to each automatic renewal.

Premium is available as soon as your payment is confirmed. Our checkout does not ask you to waive your right of withdrawal, so using Premium during the 14 days does not make you lose it: if you withdraw within that period, you are refunded in full.

To withdraw, send us an unambiguous statement before the 14-day period expires, by email to support@chessatlas.net or by post to the address in Section 1. You may use the model form below; it is not mandatory.

We refund all payments received for that purchase no later than 14 days after we receive your withdrawal, using the same means of payment, at no cost to you. Premium access granted by that purchase ends when the refund is made.

For subscriptions bought through the App Store or Google Play, withdrawal and refund requests are handled by Apple or Google under their own procedures (for Apple: reportaproblem.apple.com; for Google: the Google Play refund request page).

The Service, its content (excluding User Content), its features, and the underlying technology are the exclusive property of ANKT SERVICES.

You retain ownership of the original creative content you create on the platform (annotations, notes, selection and arrangement of moves in repertoires).

Forks of library courses retain the source's authorship. When you fork a library course, you obtain an editable copy. The underlying content (move tree, original annotations) authored by the library author remains their intellectual property; your additions and modifications on top are User Content.