The deal, plainly.

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 install and run Promote on devices you own or control, 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, 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:

• ✕Cheat in an online game, rated tournament, or any context where engine assistance is prohibited. Analyze your finished games all you want; don't use it live.
• ✕Impersonate another player by connecting their Chess.com or Lichess account without permission.
• ✕Abuse the public Chess.com or Lichess APIs. Promote paces requests for you; don't modify the app to defeat that.
• ✕Send content to the LLM features that would violate OpenRouter's or the model provider's policies (illegal content, other people's private data, etc).
• ✕Attempt to drain, exploit, or abuse the OpenRouter credits provisioned by Promote (per-user quotas and rate limits apply).

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:

• •Chess.com: public API for games and ratings. chess.com/legal/terms
• •Lichess: public API for games and ratings. lichess.org/terms-of-service
• •OpenRouter: LLM proxy for Coach features. openrouter.ai/terms
• •Cloudflare: hosts installers, workers, and this website. cloudflare.com/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 and sends is spelled out on the privacy page. By using Promote you agree to the data handling described there. The short version: your games, analyses, and Coach conversations stay on your machine; a once-a-day anonymous ping is on by default and can be turned off in Settings.

Paid features and refunds

Promote's paid tiers are not yet live. When they go live, the price shown at checkout is the price you pay. Subscription terms, renewal behavior, and any promotional pricing will be disclosed on the purchase screen before you're charged.

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 is a local-first app, so the engine, puzzles, and game analyses keep working even if our servers are down. Features that need the cloud (Coach, new-key provisioning, auto-update) may be temporarily unavailable. We don't promise uptime. The app will also keep working with your existing OpenRouter key if ours becomes unreachable.

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. Uninstall the app, delete your data (Settings → Factory Reset wipes everything locally), and that's it. We can suspend or terminate access to hosted features 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.