These terms are the agreement between you and Certus Golf for use of the Certus Golf app. They're written to be readable, but they are a real contract — please read them.
The short version
- Certus is a paid app. You buy it once on the App Store. No subscription, no in-app purchases, no advertising. Apple handles the payment and any refunds.
- Our numbers are estimates, not certified measurements. Distances, swing metrics, and strokes-gained figures are computed from video, GPS, and third-party course data. Treat them as good information, not as ground truth.
- Following the Rules of Golf is your responsibility. Tournament-Legal Mode is a helpful tool, not a ruling.
- Your data is yours. You can delete your content and your account at any time.
- We're a small operation. The app is provided "as is," and our liability is limited — see sections 14 and 15.
01Accepting these terms
By downloading, installing, or using the Certus Golf app (the "app"), you agree to these Terms of Use. If you don't agree, please don't use the app. Your use of the app is also governed by our Privacy Policy, which is incorporated into these terms by reference.
02Who can use Certus
You must be at least 13 years old to use Certus Golf. If you are under the age of majority where you live, you may only use the app with the involvement of a parent or guardian who agrees to these terms on your behalf. By using the app, you represent that you meet these requirements.
03Your account
Certus requires an account to sync your rounds and stats. You are responsible for keeping your sign-in credentials secure and for activity that occurs under your account. If you sign in with Apple, Apple's terms govern that sign-in method.
Please give us accurate information, and let us know promptly if you believe your account has been compromised. You can delete your account — and the data associated with it — from within the app at any time.
04Buying Certus
Certus Golf is a paid app. You buy it once from the App Store, and the transaction is handled entirely by Apple under Apple's terms — we never see or handle your payment details.
Refunds are Apple's to give. App Store purchases are subject to Apple's refund policy, and we can't issue, approve, or deny one. Refund requests go to Apple, normally through reportaproblem.apple.com.
We may change the app's price at any time. A price change never affects a purchase you've already made, and we don't offer retroactive credit if the price later drops.
Your purchase gives you the app as it exists when you buy it, plus whatever updates we choose to release. It is not a promise of any particular future feature, and features may change or be removed — see 13.
Certus has no in-app purchases and no subscription. If that ever changes, we'll update these terms and make the pricing clear before you're asked to buy anything.
05Your license to use the app
Subject to these terms, we grant you a personal, limited, non-exclusive, non-transferable, revocable license to use the Certus Golf app on Apple-branded devices that you own or control, for your own non-commercial use.
You may not: copy, modify, or create derivative works of the app; reverse-engineer, decompile, or disassemble it except where that restriction is prohibited by law; rent, lease, lend, sell, or sublicense it; or remove any proprietary notices. Any rights not expressly granted here are reserved.
06Your content
Your swing videos, round data, journal entries, notes, and everything else you create in the app are yours. We don't claim ownership of them.
To operate the features you ask for, you grant us a limited license to host, store, process, and transmit your content — solely to provide the app to you. For example: sending your round statistics to our backend to generate an AI coaching summary. This license ends when you delete the content or your account, except where we're required to retain something by law. As our Privacy Policy explains, your swing videos are processed on your device and are not uploaded to us.
You are responsible for the content you create — including making sure you have the right to record any person who appears in a video you capture.
07Accuracy — what Certus can and can't tell you
This is the section we most want you to actually read.
Certus produces estimates. Specifically:
- Swing measurements are derived from ordinary video using computer-vision models. They are approximations of your body's motion, not laboratory motion-capture. Their accuracy varies with camera angle, framing, lighting, clothing, and frame rate. The app surfaces trust indicators for exactly this reason — please heed them.
- GPS distances depend on your device's location accuracy and on third-party course-mapping data. They can be wrong.
- Course data — hole layouts, tee positions, green outlines, slope maps, ratings, and elevation — comes from third-party providers and may be outdated, incomplete, or incorrect for the course you're standing on.
- Strokes-gained, handicap-equivalent, and "plays-like" figures are statistical models built on your own inputs and on benchmark data. They are interpretive, not official. Nothing in Certus is an official handicap, and we are not a handicap-issuing authority.
- AI-generated coaching and round summaries are produced by language models and can be incomplete or simply wrong.
Do not rely on Certus where accuracy is critical — including for wagering, official competition scoring, official handicap calculation, or any decision with meaningful consequences. Always verify against the course's own markers, the committee's information, and your own judgment.
08The Rules of Golf & competition play
Certus includes features — such as green-slope reading, elevation-adjusted "plays-like" distances, and live weather — that are not permitted under the Rules of Golf during a stipulated round in many competitive settings.
We provide a Tournament-Legal Mode that hides those features. It is offered as a convenience and reflects our good-faith reading of the Rules; it is not a ruling, not legal advice, and not a guarantee of compliance. The Rules of Golf change, local rules and committee conditions vary by competition, and only the relevant committee can rule on what's permitted in your event.
You are solely responsible for knowing and complying with the Rules of Golf, any Local Rules, and the terms of any competition you enter. We are not responsible for penalties, disqualifications, or any other consequence arising from your use of the app during play.
09Not instruction, not medical advice
Certus is an analysis and information tool. It is not a substitute for a qualified golf instructor, and its coaching output is not personalized professional instruction.
It is also not medical advice. Golf is a physical activity and swing changes carry a risk of injury. Consult a physician or a qualified professional before acting on anything the app suggests, and stop if something hurts. You participate in golf and any related physical activity at your own risk.
10Third-party data & services
Certus incorporates data and services from third parties, including course and mapping providers, green-mapping data, handicap services, weather providers, and AI providers. Those providers' data is theirs, is subject to their own terms, and may be changed or withdrawn at any time — which may cause features to change or stop working.
We don't control third-party services and don't warrant their data. Some of that data is licensed to us and may not be extracted, redistributed, or reused outside the app. Attributions for these sources appear in the app under Legal & About.
11Acceptable use
Please don't:
- Use the app for any unlawful purpose, or to infringe anyone's rights.
- Record people without their knowledge where they have a reasonable expectation of privacy, or in violation of local recording laws.
- Interfere with, overload, or attempt to gain unauthorized access to our systems or accounts.
- Scrape, bulk-extract, or redistribute course data, green maps, or other licensed content from the app.
- Use the app to build a competing product, or resell access to it.
12Our intellectual property
The app — including its software, models, design, the Certus Golf name and mark, and all related content other than your own content and third-party data — is owned by us and protected by intellectual property laws. These terms don't transfer any of that to you.
13Termination
You may stop using Certus at any time by deleting your account and removing the app. We may suspend or terminate your access if you materially breach these terms, or if we need to for legal or security reasons. We may also discontinue the app or any feature; if we discontinue it entirely, we'll make a reasonable effort to give notice so you can export what matters to you.
Sections that by their nature should survive termination — including 06, 12, 14, 15, and 18 — survive.
14Disclaimers
To the fullest extent permitted by law, the app is provided "as is" and "as available," without warranties of any kind, whether express, implied, or statutory — including any implied warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement.
We do not warrant that the app will be uninterrupted, error-free, or secure; that defects will be corrected; or that the data, measurements, or recommendations it provides will be accurate or reliable. Some jurisdictions don't allow the exclusion of implied warranties, so some of the above may not apply to you.
15Limitation of liability
To the fullest extent permitted by law, Certus Golf and its owners will not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost profits, lost data, or personal injury, arising out of or relating to your use of the app — even if we've been advised of the possibility.
To the fullest extent permitted by law, our total aggregate liability arising out of or relating to the app or these terms will not exceed the greater of (a) the amount you paid for the app, or (b) fifty US dollars ($50). You acknowledge that the price of the app reflects this allocation of risk, and that these limitations are a fundamental basis of our agreement.
Some jurisdictions don't allow certain limitations of liability, so some of the above may not apply to you. Nothing in these terms limits liability that cannot be limited by law.
16App Store terms
These terms are between you and Certus Golf only — not with Apple. Apple is not responsible for the app or its content.
- Maintenance and support are our responsibility, not Apple's. Apple has no obligation to furnish any maintenance or support for the app.
- Warranty. To the maximum extent permitted by law, Apple has no warranty obligation with respect to the app. If the app fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price for the app to you; Apple has no other warranty obligation whatsoever, and any other claims are our responsibility.
- Product claims. We, not Apple, are responsible for addressing any claims relating to the app, including product liability, failure to conform to legal requirements, and consumer-protection claims.
- Intellectual property claims. We, not Apple, are responsible for the investigation, defense, settlement, and discharge of any third-party claim that the app infringes intellectual property rights.
- Legal compliance. You represent that you are not located in a country subject to a U.S. Government embargo or designated as "terrorist supporting," and that you are not on any U.S. Government list of prohibited or restricted parties.
- Third-party beneficiary. Apple and Apple's subsidiaries are third-party beneficiaries of these terms and, upon your acceptance, will have the right to enforce them against you.
- You must comply with applicable third-party terms of agreement when using the app.
17Changes to these terms
We may update these terms from time to time. When we do, we'll revise the "Last updated" date above, and for material changes we'll provide a more prominent notice where appropriate. Continuing to use the app after changes take effect means you accept the revised terms.
18Governing law
These terms are governed by the laws of the State of Ohio, United States, without regard to its conflict-of-laws rules. You and Certus Golf agree that the state and federal courts located in the State of Ohio will have exclusive jurisdiction over any dispute arising out of these terms, and you consent to personal jurisdiction there. If you are a consumer, nothing here deprives you of the protection of mandatory consumer-protection laws in your country of residence.
19Contact
Questions about these terms? Email us at info@certusgolf.com.
Certus Golf · certusgolf.com