Privacy Policy
HelmKeeper · Last updated: June 2, 2026
This Privacy Policy explains how Double Check Advertising ("we," "us," or "our") collects, uses, and protects information when you use the HelmKeeper mobile application ("HelmKeeper" or the "App"). By using HelmKeeper, you agree to the practices described here.
1. Information We Collect
We collect only the information needed to provide HelmKeeper's features:
Account information. When you sign in with Sign in with Apple, we receive a unique identifier and, depending on your choice, your name and email address. If you select Apple's "Hide My Email," we receive a private relay address rather than your real email.
Boating data you provide. Information you enter into the App, including vessel details, maintenance and pre-departure checklists, float plans, insurance policy details, saved locations, submissions, and your in-app preferences.
Location data. With your permission, HelmKeeper accesses your device's GPS location to support features such as float plans, current-position weather, and saved locations. You can revoke location access at any time in your device settings; some features may not function without it.
Usage analytics. We use a third-party analytics service to understand how features are used so we can improve the App. This includes anonymized or pseudonymized data such as screens viewed, feature interactions, and basic device/technical information (device model, OS version, app version).
Purchases and subscriptions. Payments for subscriptions and one-time purchases (such as Lifetime access) are processed by Apple. We do not receive or store your payment card details. We receive limited transaction and subscription-status information — for example, whether you have an active subscription or own Lifetime access — needed to provide and maintain your access. Subscription management is handled through your Apple ID / App Store account.
2. How We Use Your Information
To provide, maintain, and operate HelmKeeper's features.
To store and sync your boating data to your account.
To retrieve relevant weather information for your location.
To verify and maintain your subscription or purchase status and provide the features you've paid for.
To understand usage patterns and improve the App.
To respond to support requests and communicate with you about the App.
3. Third-Party Services
HelmKeeper relies on the following services, each governed by its own privacy practices:
Apple — Sign in with Apple for authentication**, and the App Store / In-App Purchases for processing subscriptions and purchases.**
Supabase as our backend and database provider, which securely stores your account and boating data.
Our analytics provider for usage analytics.
NOAA / National Weather Service for weather data. Weather information is sourced from publicly available U.S. government data. HelmKeeper is not affiliated with, endorsed by, or sponsored by NOAA or the National Weather Service.
AI service providers (future). We may introduce AI-powered features. If and when you use one, the content you submit (such as your question and relevant in-app context) may be sent to a third-party AI provider to generate a response. We will update this Policy and our App Store privacy disclosures to reflect those practices before such a feature becomes available, and we will not sell this information.
4. How Your Information Is Shared
We do not sell your personal information. We share information only as needed to operate the App (with the service providers listed above), to comply with the law, or to protect our rights and the safety of users. Float plans and similar information are shared only with the recipients you choose.
5. Data Retention & Account Deletion
We retain your account and boating data for as long as your account is active. You can permanently delete your account at any time from within the App (Settings → Account → Delete account). Deleting your account removes your account record and cascades to delete your associated boating data from our systems. Once deleted, this data cannot be recovered. Note: deleting your account does not cancel an active subscription — manage or cancel subscriptions in your device's App Store settings.
6. Data Security
We use industry-standard safeguards, including encryption in transit, to protect your information. No method of transmission or storage is completely secure, and we cannot guarantee absolute security.
7. Children's Privacy
HelmKeeper is intended for users age 13 and older and is not directed to children under 13. While the App's content is rated suitable for all ages, you must be at least 13 to create an account and use the App. We do not knowingly collect personal information from children under 13. If you believe a child has provided us information, please contact us so we can remove it.
8. Your Rights & Choices
Access and update: View and edit your data within the App.
Delete: Permanently delete your account and data from within the App.
Location: Grant or revoke location permission in your device settings.
Depending on your jurisdiction, you may have additional rights. Contact us to exercise them.
9. Changes to This Policy
We may update this Privacy Policy from time to time. We will revise the "Last updated" date above and, where appropriate, notify you within the App. Continued use of HelmKeeper after changes take effect constitutes acceptance.
10. Contact Us
Questions about this Privacy Policy? Contact us at help@helmkeeper.com.
Terms of Service
HelmKeeper · Last updated: June 2, 2026
These Terms of Service ("Terms") govern your use of the HelmKeeper mobile application ("HelmKeeper" or the "App"), provided by Double Check Advertising ("we," "us," or "our"). By downloading, accessing, or using HelmKeeper, you agree to these Terms. If you do not agree, do not use the App.
IMPORTANT SAFETY NOTICE — PLEASE READ. HelmKeeper is an informational and organizational tool only. It is not a substitute for proper seamanship, formal boating education, professional judgment, official navigation charts, official weather forecasts, or emergency services. Emergency and safety content in the App (including, without limitation, guidance on situations such as fire, taking on water, man overboard, prop strike, prop entanglement, medical emergencies, steering failure, and capsizing) is provided for general informational purposes and may not apply to your specific vessel, conditions, or situation. In an emergency on the water, contact the U.S. Coast Guard on VHF Channel 16 or call 911 immediately. Always rely on official sources, your own training, and qualified professionals. You are solely responsible for the safe operation of your vessel.
1. Eligibility
You must be at least 13 years old to use HelmKeeper. By using the App, you represent that you meet this requirement and that the information you provide is accurate.
2. Your Account
You are responsible for maintaining the confidentiality of your account and for all activity that occurs under it. You agree to provide accurate information and to keep it up to date. You may delete your account at any time from within the App.
3. Subscriptions, Free Trial, and Purchases
HelmKeeper is free to download. After a free trial, continued use of the App requires a paid plan. We currently offer:
Monthly subscription — $3.99 per month (auto-renewable)
Annual subscription — $24.99 per year (auto-renewable)
Lifetime access — $69.99, a one-time purchase
New subscribers receive a 7-day free trial on the monthly and annual subscriptions. If you do not cancel before the trial ends, it automatically converts to a paid subscription at the price above. Lifetime access is a one-time, non-recurring purchase and does not include a free trial. Lifetime access grants the core HelmKeeper features included with a subscription, for as long as the HelmKeeper app and service remain available; it is tied to your Apple ID and may be shared only via Apple Family Sharing where enabled; otherwise non-transferable. Lifetime access does NOT include separately-priced add-ons, optional features, or consumable items (such as AI usage credits) that we may introduce in the future, which remain available for separate purchase. You may purchase Lifetime access at any time, including during a free trial. Because subscriptions and Lifetime access are separate products, buying Lifetime does not automatically cancel a subscription or free trial — to avoid being charged when a trial converts, cancel the subscription in your App Store account settings.
Founding lifetime offer. The one-time Lifetime purchase is a limited offer available to the first 10,000 purchasers. Once that limit is reached, the Lifetime option will be withdrawn from sale and will no longer be available. Lifetime access already purchased remains valid in accordance with these Terms.
All purchases are processed by Apple through your Apple ID. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period; your Apple ID is charged for renewal within 24 hours prior to the end of the period. You can manage or cancel your subscription at any time in your device's App Store account settings. Deleting the App does not cancel a subscription. Any unused portion of a free trial is forfeited when you purchase a subscription.
Prices are stated in U.S. dollars and may vary by region; we may change prices on a going-forward basis, with notice where required by law. Refunds for App Store purchases are handled by Apple under the App Store's policies; we generally cannot issue refunds directly.
We may add, change, or discontinue features, plans, and in-app purchases over time, including paid add-ons and consumable items (such as usage credits for certain features). Any new paid feature or item will be clearly identified, with its price and terms shown, before you purchase, and such add-ons or items are not included in Lifetime access (or any subscription) unless we expressly state otherwise. Consumable items are used up as you use the associated feature, are non-refundable except as required by law, may expire, and have no cash value.
4. Artificial Intelligence Features
Some current or future features may use artificial intelligence to generate text, summaries, or recommendations. AI-generated content may be inaccurate, incomplete, or outdated, is provided for general informational purposes only, and must not be relied upon for safety, navigation, weather, or emergency decisions. The Important Safety Notice above applies fully to any AI-powered features. If you use an AI-powered feature, the content you submit may be processed by third-party AI service providers to generate a response, as described in our Privacy Policy.
5. Use of the App
You agree to use HelmKeeper only for lawful purposes and in accordance with these Terms. You agree not to:
Use the App in any way that violates applicable laws or regulations;
Attempt to reverse engineer, interfere with, or disrupt the App or its underlying services;
Access another user's account or data without authorization;
Rely on the App as your sole source of safety, navigation, or weather information.
6. Weather & Third-Party Data
HelmKeeper displays weather and related data sourced from NOAA / the National Weather Service and other third parties. This data is provided "as is," may be delayed, incomplete, or inaccurate, and is not guaranteed. HelmKeeper is not affiliated with, endorsed by, or sponsored by NOAA or the National Weather Service. Always confirm conditions with official sources before making decisions on the water.
7. Intellectual Property
HelmKeeper and its original content, features, and functionality are owned by Double Check Advertising and are protected by intellectual property laws. The data you enter remains yours; you grant us a limited license to store and process it solely to provide the App's features.
8. Disclaimers of Warranty
THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE, ACCURATE, OR THAT ANY DATA (INCLUDING WEATHER**, AI-GENERATED,** OR SAFETY CONTENT) IS COMPLETE OR RELIABLE.
9. Limitation of Liability
TO THE FULLEST EXTENT PERMITTED BY LAW, DOUBLE CHECK ADVERTISING AND ITS OWNERS, EMPLOYEES, AND AGENTS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS, DATA, PROPERTY, PERSONAL INJURY, OR LOSS OF LIFE, ARISING OUT OF OR RELATING TO YOUR USE OF — OR INABILITY TO USE — THE APP, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. YOUR USE OF THE APP IS AT YOUR OWN RISK.
10. Indemnification
You agree to indemnify and hold harmless Double Check Advertising LLC from any claims, damages, losses, or expenses (including reasonable legal fees) arising out of your use of the App or your violation of these Terms.
11. Termination
We may suspend or terminate your access to the App at any time if you violate these Terms. You may stop using the App and delete your account at any time.
12. Governing Law
These Terms are governed by the laws of the State of Connecticut, United States, without regard to its conflict-of-laws principles.
13. Changes to These Terms
We may update these Terms from time to time. We will revise the "Last updated" date above and, where appropriate, notify you within the App. Continued use after changes take effect constitutes acceptance.
14. Contact Us
Questions about these Terms? Contact us at help@helmkeeper.com
© 2026 Double Check Advertising. All rights reserved.