Terms of use and refunds

Last updated: November 12, 2026. These terms cover chess123.app and Chess Vision (see.chess123.app), run by DS Net Labs, India. By using the sites you agree to them.

The service

Chess Vision is currently a chess visualisation trainer. Every training level is free to use with ads. A subscription removes ads and adds engine evaluations of the positions and progress sync across devices. We may change, add or remove features; we will not take away features from a subscription period you have already paid for without a pro-rated refund.

Accounts

You need an account only to subscribe. Keep your login secure; you are responsible for activity on your account. We may close accounts used to abuse the service.

Subscriptions

• Plans are monthly or yearly at the price shown before you pay, in US dollars or Indian rupees. Payment is processed by Dodo Payments, the merchant of record, which also handles taxes and receipts.
• Subscriptions renew automatically until you cancel. You can cancel at any time from the account menu (Manage subscription); you keep access until the end of the paid period.
• Subscriptions are not offered in Russia; everything there is free with ads.

Refunds

All payments, including renewals, are final and are not refunded. Everything except the subscription features is free, so you can try Chess Vision fully before you pay. You can cancel at any time; cancelling stops the next renewal and you keep access until the end of the period you paid for.

We refund only in these cases: you were charged twice for the same period, or a paid feature did not work for you and we could not fix it within a reasonable time. Write to achessapp36@gmail.com with the email address you signed in with. Refunds are paid by Dodo Payments to the original payment method.

Where you live, the law may give you rights that these terms cannot remove; those rights are not affected. If you are in the European Union or the United Kingdom, when you subscribe you ask for the subscription to start immediately and acknowledge that you therefore lose the 14-day right to cancel once it has started.

Content and licences

Positions come from the Lichess open database (CC0) and Lichess broadcasts (CC BY-SA 4.0); credits and links are shown in the site's "Sources & licence" page. Piece images: cburnett (CC BY-SA 3.0). Engine evaluations are computed by Stockfish and are a guide, not a verdict on any game.

No warranty

The sites are provided as they are. We work to keep them correct and available but do not promise that they are error-free or always online. To the extent the law allows, our liability is limited to the amount you paid us in the 12 months before a claim.

Law

These terms are governed by the laws of India; courts in Coimbatore, Tamil Nadu have jurisdiction, without removing protections you have under the law of your country of residence.

Contact

achessapp36@gmail.com