Terms and Conditions

The service provider is Tomasz Bazelczuk IT, Grupy AK Północ 4/93, 00-713 Warsaw, Poland. Tax ID (NIP): 8231563285. Contact: support@chessexpert.io.

ChessExpert provides board recognition, FEN editing, engine analysis, PDF diagrams, training, saved positions and exercises. Features vary by platform, app version and device; some run locally, others in the cloud. Not every web feature is available in native apps. Separate app-store and external-service terms apply.

Website features are currently free. The Pro preview describes a planned web pass: unlimited uploads and saved positions for 90 days, one payment and no automatic renewal. Launch timing is unconfirmed. Sales are not open. The offer preview uses Paddle Sandbox. You cannot buy a pass or activate paid access in this preview, but it sends technical connection data to Paddle before checkout. See Privacy.

After launch and payment-provider approval, Paddle is planned to be the authorised reseller and Merchant of Record under its Buyer Terms. Access starts only after server verification of completed payment. A separate purchase would add 90 days from the later of verification or existing expiry; no automatic charge. See Refunds for future requests and mandatory rights.

Saving launch interest records your current profile, including a guest. It takes no payment, sends no emails, reserves nothing and guarantees neither a discount nor access. Switching or merging into an existing Google profile does not transfer it; linking Google while keeping the same profile ID does.

• Daily allowance. The Black Friday preview allows Free usage beyond the limit. Afterward, each profile has one shared daily allowance of 10. Updated Chrome analysis counts server-accepted starts, including later failures or cancellations. Retrying the same operation counts once. Other web, PDF and native flows count successful cloud uploads; pending recognition holds a place, released on terminal failure. These share one allowance. Image archival may finish after the result; its failure does not refund a counted start.
• Manual FEN edits, engine analysis, PDF archival and diagram finding and cached results do not count. Requesting fresh recognition of a selected diagram does.
• Saved positions. Free saves may exceed 10 during the preview. Afterward, the limit is 10 in total per profile across statuses, collections and exercise links. Records from the preview or a merge remain; new saves wait until deletion leaves fewer than 10. Planned Pro saves are unlimited.
• Insights. Free shows the last 7 days and active Pro 90 days, up to 3,000 successful analyses, independently of the preview. Donations support development, not Pro access.

Google sign-in and merge options apply to the website and supported embedded interfaces; native-app and extension profiles may be separate. Google sign-in is optional. A guest ID can store study material, but losing its browser session may lose access. Linking an unused Google account keeps the guest ID and records.

An empty guest can switch to an existing Google account after a point-in-time server check; later records may stay with the guest. Otherwise choose Merge data and continue or continue without merging. Your selected account is kept; confirm Google again only if its credential is missing or expired.

A merge copies the initial supported positions, collections, exercises and progress, and transfers selected available history without overwriting Google study material. Later records stay with the guest; the source account and study records remain. Interrupted history transfers may be partial: retry with the same Google account.

PDFs, device-local progress, separate native profiles and pairing are excluded; not all data is guaranteed to migrate. If no merge is underway, continuing without merging leaves cloud guest records outside Google and potentially inaccessible on this device. Finish uploads and merges in other tabs before switching.

Use starts when you request a feature and we provide it, not by reading this page. You can stop anytime. Signing out, creating a new guest, clearing browser or device storage, or uninstalling an app or extension does not delete cloud records and may remove access. Statutory withdrawal and accrued rights remain.

Use a supported browser or updated compatible app with internet. Web features may need JavaScript, WebAssembly, web workers and storage. File, camera, photo, screenshot or extension permissions apply only to relevant features. Protect profile access; avoid confidential or unrelated personal material.

Do not upload unlawful content, impersonate others, bypass security or disrupt services. Lawful defect reporting and statutory rights remain available.

You retain ownership and other rights. Upload only material you may lawfully use, respecting copyright and privacy. You grant nonexclusive permission to process, store and display it through us and our providers only as necessary for requested services.

Photos support recognition and related features, not a public gallery. Recognition and study records in the application are restricted to their owner or authorized administrators. Stored photos and PDFs can be read by anyone with their file URL, including while an upload is pending; file listing is blocked. Previous file links, external object permissions and cached or downloaded copies can outlast application restrictions. This is not confidential document storage.

No fixed automatic expiry applies. Data requests are manual, without automatic email, export or erasure. Privacy explains providers, international processing, retention and requests. Analytics needs a separate choice: agreeing to Terms does not grant consent, and rejection leaves chess features available.

Recognition, engine results and exercises can be wrong. Check orientation, side to move and castling rights. These study aids cannot guarantee results; maintenance, faults or provider outages may interrupt service.

Necessary legal, security or compatibility changes and proportionate restrictions against misuse may apply. Where practicable, we explain material interruptions in advance and offer alternatives. You can challenge restrictions through complaints.

Email support@chessexpert.io with the feature, issue and requested resolution. Do not include passwords or unrelated documents. We reply by email or another agreed durable medium, within 14 days where consumer law requires unless another statutory rule applies; otherwise without undue delay. Statutory remedies do not require a prior complaint.

These Terms do not remove applicable rights or exclude responsibility the law does not let us exclude. You may contact us and use available legal remedies. Polish law applies without removing applicable mandatory consumer protections where you normally live.

We may revise these Terms for legal, security, technical or feature changes and update the date above. Revisions apply to future use, without changing accrued rights or granting new rights over earlier uploads.

We give advance notice of significant changes to ongoing use and, where required, a notice you can keep, such as email, and ask for agreement. You can stop using ChessExpert anytime.

See Software licenses and third-party notices for license texts and source downloads.