Terms of Service

The deal, plainly.

These are the terms for using Promote. They apply to the browser app at app.promotechess.com, this website, and any services Promote runs (account auth, sync, the LLM router, and anonymous telemetry). They're written to be read, not to hide behind.

Who we are

Promote is made by Daniel Weisman, an independent developer reachable at [email protected]. In these terms, "Promote," "we," "us," or "our" means Daniel Weisman doing business as Promote.

Your license to use the app

You get a personal, non-exclusive, non-transferable license to use Promote in any modern browser, for your own chess improvement. The app itself is proprietary software; the open-source components bundled inside it keep their own licenses (see the credits page).

You may not resell Promote, redistribute the proprietary parts, reverse-engineer the app to build a competing product, automate large-scale scraping of the API surface, or strip out the bundled telemetry-consent UI and pretend the data isn't collected. You may absolutely study the open-source components under their own license terms.

Acceptable use

Don't use Promote to:

Third-party services

Promote connects to a few services on your behalf. When you use a feature that calls one of them, you're also agreeing to that service's terms:

Promote is not affiliated with, endorsed by, or operated by Chess.com, Lichess, OpenRouter, or Cloudflare. Trademarks belong to their respective owners.

Your data

What Promote collects, where it lives, and how to take it back is spelled out on the privacy page. By using Promote you agree to the data handling described there. The short version: your account, games, findings, and SRS state are stored in our private Cloudflare cloud, scoped to your user UUID; you can export everything or delete the account from Settings; an anonymous device-keyed telemetry ping is on by default and can be turned off.

Paid features and refunds

The price shown at checkout is the price you pay. Subscription terms, renewal behavior, and any promotional pricing are disclosed on the purchase screen before you're charged. Promote runs on AI credits — a portion of each purchase becomes spendable credit on the AI features. You can see your balance in the topbar of the app at any time.

Account deletion and unused credits. When you delete your account, we cancel any active subscription so you won't be charged again, and we permanently remove your data. Unused AI credits, the original Founding-100 payment, and partial subscription periods are not refunded. If you want to step away temporarily without losing your credits, log out instead of deleting — your account and balance will be waiting when you sign back in. The Founding-100 spot you held returns to the pool once your account is deleted.

Refunds: if a paid feature fails to work as described within the first 30 days of purchase, email [email protected] and we'll refund you. Beyond 30 days refunds are at our discretion but we're reasonable about it.

Service availability

Promote runs as a browser app backed by Cloudflare. The local Stockfish engine, board navigation, and any data already loaded into your browser cache continue working briefly without network. Features that need the cloud (sign-in, sync, coach calls, deep cloud analysis) require connectivity; if our servers or upstream providers are down, those features may be temporarily unavailable. We don't promise uptime.

Warranties and liability

Promote is provided "as is," with no warranty of any kind, express or implied, including merchantability, fitness for a particular purpose, or non-infringement. Chess coaching is not a science: the engine evaluations and Coach suggestions are probabilistic tools, not guarantees of rating improvement.

To the maximum extent permitted by law, Promote and its operator are not liable for indirect, incidental, special, or consequential damages, including lost games, lost ratings, lost tournament entry fees, or emotional distress from a bad position review. Total liability for any claim is capped at the amount you paid for Promote in the twelve months before the claim (which may be zero).

Open-source components

Nothing in these terms limits rights you already have under the licenses of the open-source software bundled with Promote. Stockfish, for example, remains under GPL-3.0-or-later; you can obtain its source at github.com/official-stockfish/Stockfish. Full list on the credits page.

Termination

You can stop using Promote any time. Settings → Privacy → Delete my account purges your account, games, findings, and everything else tied to your user UUID. We can suspend or terminate access for accounts that abuse the services or violate these terms; we'll email first where we reasonably can.

Changes

We may update these terms as Promote evolves. Substantive changes are flagged at the top of this page with a new date and, for paying users, announced by email before they take effect. Continued use after a change means you accept the updated terms.

Governing law

These terms are governed by the laws of the State of Missouri, United States, without regard to its conflict of laws rules. Disputes will be resolved in the state or federal courts located in St. Louis County, Missouri, and you agree to that venue. If you're a consumer in a jurisdiction with mandatory local protections, nothing here overrides those protections.

Questions

Email [email protected]. We'd rather hear about a confusing clause than hide behind one.

Last updated: April 30, 2026 (rev 2 — updated for the browser-only, cloud-synced architecture).