These Terms of Use ("Terms") form a legal agreement between you and us and govern your use of the MainLine mobile application ("MainLine" or the "App"). By downloading, accessing, or using the App, you agree to these Terms. If you do not agree, do not use MainLine.
These Terms should be read together with our Privacy Policy, which describes how MainLine and its service providers handle information.
You must use MainLine in compliance with applicable laws and these Terms. If you use MainLine on behalf of an organization, you represent that you have authority to bind that organization to these Terms.
MainLine is licensed, not sold, to you. Subject to these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to install and use the App on devices you own or control for your personal, non-commercial use.
You may not, except as permitted by applicable law:
Your use of MainLine may also be subject to platform terms, including Apple App Store or Google Play rules.
MainLine uses third-party services, including Amplitude (analytics) and Google AdMob (ad delivery), to operate and improve the App and website. Information processed through these services may include your IP address, app/device/browser identifiers, app version, operating system, language, approximate location derived from IP address, website page views, outbound link clicks, in-app interaction events, and ad request/performance metadata.
MainLine currently requests ads on iOS without using Apple's Identifier for Advertisers (IDFA), and does not currently use IDFA-based cross-app tracking for ad delivery. By using MainLine, you acknowledge the collection and processing described in our Privacy Policy.
MainLine currently does not provide a separate in-app toggle to opt out of ad delivery, except where regional law requires a consent flow with additional choices.
MainLine Pro may be offered as an auto-renewable monthly or yearly subscription. Current pricing is displayed in the App at the time of purchase and may vary by platform, region, taxes, promotions, and local currency.
Subscriptions are billed through Apple or Google, depending on your device. Unless you cancel at least 24 hours before the end of the current billing period, your subscription will automatically renew and the applicable renewal charge will be applied by the platform to your Apple ID or Google Play account.
We may offer a free trial for MainLine Pro. If we do, the duration, eligibility, and any conditions will be shown in the App before you subscribe. Unless you cancel before the trial ends, the trial may automatically convert into a paid subscription and your platform account may be charged the applicable price.
You can manage or cancel your subscription at any time in your device account settings. Cancellation takes effect at the end of the current billing period, and deleting the App does not automatically cancel your subscription.
All purchases are processed by Apple or Google. Refund requests must be submitted directly to the platform that processed the transaction and are subject to that platform's refund rules. We do not control or process app store refunds ourselves.
We may change subscription pricing from time to time. If applicable law or platform rules require notice of a price change, that notice will be provided before the new price applies to your renewal.
You are responsible for the chess lines, notes, usernames, and other content you add to MainLine. You represent that you have the right to use any content you enter into the App.
You agree not to use MainLine in a way that:
MainLine may allow you to use or access third-party services such as Apple, Google, Google AdMob, Amplitude, Lichess, and Chess.com. Those services are operated independently from us, and your use of them is governed by their own terms, policies, and service availability.
We are not responsible for third-party services, including changes they make to their APIs, pricing, features, or terms that may affect how MainLine works.
The App and its content, features, branding, design, and software are owned by us or our licensors and are protected by applicable intellectual property laws. These Terms do not give you any ownership rights in MainLine or our trademarks.
Opening theory data used in MainLine may be sourced from publicly available databases, including Lichess, and is used in accordance with the applicable licenses and terms for those sources.
We may update, modify, suspend, or discontinue MainLine or any part of it at any time. Some features may change or become unavailable if a third-party service changes or removes the data or APIs MainLine relies on.
We may suspend or terminate your license to use MainLine if you violate these Terms. Upon termination, you must stop using the App.
MainLine is provided "as is" and "as available" without warranties of any kind, express or implied, including implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement. We do not guarantee that the App will be uninterrupted, error-free, secure, or available at all times.
To the fullest extent permitted by applicable law, we and our officers, employees, contractors, affiliates, and licensors will not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages arising out of or related to your use of MainLine.
To the fullest extent permitted by applicable law, our total liability for any claim arising out of or relating to MainLine will not exceed the amount you paid for the App or subscriptions during the 12 months before the event giving rise to the claim.
To the extent permitted by applicable law, these Terms are governed by the laws of the jurisdiction where we are based, without regard to conflict of law principles. Any dispute arising out of these Terms or your use of MainLine will be brought in the courts located in that jurisdiction, unless applicable consumer protection law requires otherwise.
We may update these Terms from time to time. If we do, we will post the updated version at this URL and update the effective date above. Your continued use of MainLine after the updated Terms become effective means you accept the revised Terms, to the extent permitted by applicable law.
If you have questions about these Terms, contact: