Terms and conditions

1. About Erin Health and these Terms

1.1 We are Erin Health Ltd (“Erin Health”, “we” or “us”), a company registered in England and Wales with company no. 16589696 and registered office at 32 Crieff Road, London, England, SW18 2EA.

1.2 You have been directed to this page because you have chosen to download, access and use the Erin Health mobile application software (the “App”). The App, along with the functions, digital content, resources, services and Outputs (defined below) provided through the App, are together referred to below as the “Resources”. This page sets out the terms and conditions (the “Terms”) on which: (i) we agree to make the Resources available to you; and (ii) you agree to access and use the Resources. The Terms were last modified on 14 December 2025.

2. These Terms are important — please read them

2.1 Under these Terms, we license you to use the Resources. It is important that you read these Terms before you start using the Resources because they explain, amongst other things: what you can expect from the Resources; how we may change the contract between us; how either of us may end the contract between us; and what you can do if you experience a problem when using the Resources.

2.2 Under data protection legislation, we are required to provide you with certain information including how we process your personal data and for what purposes, and your rights in relation to your personal data and how to exercise those rights. Comprehensive information about our processing of your personal data is set out in our Privacy Policy and Cookie Policy. When you accept these Terms on the App, you also confirm that you have read and understood our Privacy Policy and Cookie Policy.

2.3 If you're an Android user you should also read Google Play Store's terms and conditions and policies, and if you're an iOS user you should also read Apple App Store's terms and conditions and policies (together, the “Store Terms”). If there is any conflict or ambiguity between a provision in these Terms and a provision in the applicable Store Terms, then the provision in the applicable Store Terms shall have priority over the provision in these Terms.

3. Erin Health is here to help

3.1 If you need help with anything, including if you aren't happy with the Resources, have concerns relating to any illegal content on the Resources, have experienced problems using the Resources or think there is a mistake in these Terms, please take a look at our support resources available at erin.health or get in touch with us directly by contacting us.

3.2 We may also need to contact you from time to time. We'll do this by email, phone call and/or SMS (using the contact details you have provided to us) and/or in-App notifications, and in accordance with our Privacy Policy.

4. Joining Erin Health

4.1 Once you have accepted these Terms on the App, we will set up an account for you (your “Account”). We will ask you to input information about yourself into your Account, including your name, address, phone number, email address and information relating to your health (including symptoms and medical conditions) (your “Account Data”). Your Account Data will enable us to provide appropriate Resources to you. You agree to always provide us with complete and accurate Account Data and notify us promptly if any of your Account Data changes. We are under no obligation to check the accuracy of the Account Data that you provide to us, and we do not do so.

4.2 We are giving you personally the right to hold an Account with us and use the Resources, and you may only do so if you are a natural person, aged 18 years or over and resident in the United Kingdom. If you do not, or if you cease to, meet one or more of these requirements, then you cannot register for an Account or, if you already hold an Account, you must promptly take steps to delete it in accordance with clause 10 below.

4.3 You must not open, or attempt to open, more than one Account. If you open multiple Accounts, we reserve the right to close down your second and any subsequent accounts at our complete discretion and without notifying you first.

5. Your rights and obligations when using the Resources

5.1 When using the Resources, you are responsible for ensuring that: (i) they are suitable for you and meet your requirements; (ii) if you access your Account via a phone or other device not owned by you, you have the permission of the owner of that device to do so (you will be responsible for complying with these Terms, whether or not you own the relevant device); (iii) if you plan to sell any device on which the App is installed, you remove the App from that device (and log out of your Account) before the sale; (iv) your device, information technology, computer programs and platform are properly configured to access the Resources and you satisfy any applicable compatibility requirements; and (v) you do not transmit any material that is defamatory, offensive or otherwise objectionable.

5.2 You must not use the Resources: (i) in a way that could damage, disable, overburden, impair or compromise our systems or security or interfere with other users of the Resources; (ii) in any unlawful manner or for any unlawful purpose; (iii) to decipher, decompile, disassemble or reverse engineer any of the software comprising, or in any way contributing to, the Resources; (iv) to provide Resources to third parties or assist third parties in obtaining access to the Resources; or (v) to build a product, service, offering or following, whether for commercial purposes or otherwise (including a product or service which competes with the Resources or any part of them) on your own behalf or for a third party.

5.3 You must treat as confidential and you must not disclose to any third party: (i) your Account Data; and (ii) your log-in details (including your email address and password), which may only be used by you and not by any other person. You must take all reasonable steps to prevent unauthorised access to, or use of, your Account and the Resources. If you suspect or become aware of unauthorised use or any other breach of security, please notify us immediately.

5.4 You may: (i) access, download or stream a copy of the App onto one device and view, use and display the App for your personal purposes only; (ii) make one copy of the App solely for back-up purposes (provided this is permitted by any applicable Store Terms); and (iii) receive and use any free supplementary software code or update the App incorporating “patches” and corrections of errors, as we may provide to you.

6. Limitations of the Resources

6.1 We source much of the information used by and provided through the Resources from the International Headache Society and the British Association for the Study of Headache. We do not check this information and cannot verify or guarantee that it is complete, accurate, up to date, free of errors or based on factual and verified information and statistics.

6.2 We make the Resources available on an ‘as is’ basis, for general information only and, to the fullest extent permitted under applicable law, we disclaim any implied terms as to title, merchantability, fitness for a particular purpose and non-infringement. The Resources have not been developed to meet your individual requirements, and we do not warrant that they will do so.

6.3 Information obtained from, and recommendations given by, the Resources do not constitute information or advice (including medical advice) on which you can or should rely. You must obtain professional or specialist advice before taking, or refraining from, any action on the basis of information obtained from, or recommendations given by, the Resources. In particular, the Resources are not a substitute for seeking professional medical advice from a qualified medical practitioner. As between you and Erin Health, you are solely responsible for ensuring you receive the medical treatment that you need.

6.4 We cannot guarantee, and we do not warrant, that the Resources will be secure or free from bugs, viruses, etc. Accordingly, you agree not to hold us accountable for such bugs, viruses, etc. and undertake to source and use your own suitable virus protection software.

6.5 We cannot guarantee, and we do not warrant, that any or all of the Resources will always be accessible, available or uninterrupted. We may terminate, suspend, withdraw or restrict the availability of all or any part of the Resources with immediate effect and at our complete discretion, including for business and operational reasons. We will try to give you reasonable notice of any suspension or withdrawal.

7. You grant rights and provide information to us, so we can deliver the Resources to you

7.1 Your inputs and uploads into your Account and any other Resources (together, your “Inputs”), and the outputs generated (by you and us) from those Inputs (the “Outputs”), will be fully accessible by, and visible to, us. If they include personal data, we will only process that personal data in accordance with our Privacy Policy.

7.2 By accepting these Terms, you grant to us a non-exclusive, royalty-free, worldwide, perpetual and irrevocable licence (the “Licence”) to use the Inputs, the Outputs and your intellectual property rights (if any) subsisting in both to: (i) provide, facilitate and administer the Resources; (ii) generate, use and/or share, for any purpose whatsoever, aggregated and anonymised data derived from the Inputs and Outputs (for example, to see trends in headache frequency, severity, phenotype, disease triggers and relievers and demographic trends in headache); (iii) verify and record information and documentation that enables us to confirm that the Licensed Content is complete, accurate and current; and (iv) if we are required to do so by applicable laws or a court order, disclose your identity to third parties.

8. Ownership and protection of Erin Health Assets

8.1 We are the owner or the licensee of all intellectual property rights in: (i) the Resources; (ii) materials that we publish (or that are published on our behalf) on or through the Resources; and (iii) the software, domains, logos, brand names, business or company names, product identifications and proprietary marks contained within or made available through the Resources (together, the “Erin Health Assets”). The Erin Health Assets are protected by copyright and other intellectual property rights under laws and treaties around the world, and all such rights are reserved by us and our licensors. These Terms do not grant you any rights to, under or in our intellectual property rights.

8.2 You acknowledge and agree that you: (i) have no intellectual property rights in, or to, the Erin Health Assets (other than the right to use the Resources in accordance with these Terms); (ii) will not use the name “Erin Health” or any logo, brand name, business or company name, product identification or proprietary mark which is similar or identical to one used by, on or in connection with Erin Health, the Erin Health business or the Erin Health Assets; and (iii) will not remove or alter any logo, brand name, copyright notice or other proprietary mark contained in, displayed on, or comprising part of the Erin Health Assets.

8.3 You must not: (i) copy any element of the Erin Health Assets, except as part of the normal use of the Resources or where necessary for back-up or operational security; (ii) translate, merge, adapt, vary, alter or modify the whole or any part of the Erin Health Assets, nor permit them to be combined with or incorporated in any other programs (except as necessary to use the Resources on devices as permitted in these Terms); (iii) collect or harvest any information or data from the Erin Health Assets or reproduce, extract or otherwise communicate or make available to third parties any part of the Erin Health Assets; or (iv) disassemble, de-compile, reverse engineer or create derivative works from the whole or any part of the Erin Health Assets, except to the extent that such actions cannot be prohibited under applicable laws.

9. Changes to these Terms and the Resources

9.1 Changes to these Terms. We may need to change these Terms to, among other things, reflect changes in law or best practice. We will give you at least 30 days' notice of any change to these Terms by sending a message to your Account (the “Change Notice”). You will see the Change Notice when you next access your Account via the App, so you must regularly check your Account for Change Notices and other messages. If you wish to reject the notified changes, you must delete your Account within 30 days of the date of the Change Notice and, as a result: (i) your access to your Account via the Resources will be terminated; and (ii) we will no longer be able to provide you with the Resources.

9.2 Enhancements and updates. From time to time we may: (i) add new functionality to the Resources (we will not notify you when we do this); and/or (ii) automatically update and change the Resources to improve performance, enhance functionality, reflect changes to the operating system or address security issues. If you choose not to install recommended updates or if you opt out of automatic updates you may not be able to continue using the Resources.

10. How you and we can end our relationship

10.1 You understand and agree that we will monitor your usage of the Resources to allow us to determine whether a violation of these Terms has, or is, occurring. If you have (or if we have reasonable grounds to believe that you have) failed to comply with these Terms in a serious way (a “Breach”), or if we reasonably expect you to commit a Breach, we may (at our complete discretion): (i) notify you of this; (ii) disable or suspend your right to use the Resources; (iii) delete your Account or suspend your access to it; and/or (iv) if your Breach can be put right, give you a reasonable opportunity to do so. Provisions of these Terms that expressly or by their nature should survive termination will survive termination.

10.2 If we disable or suspend your right to use the Resources and/or your access to your Account under clause 10.1, then you must: (a) stop all activities authorised by these Terms; (b) delete or remove your Account and the Resources from all devices in your possession or immediately destroy all copies you have (and confirm to us that you have done this); and (c) do all other acts and things that we may reasonably request. Any suspension shall remain in force unless and until we are satisfied (acting reasonably and in good faith) that the actual or anticipated Breach has been prevented or remedied, at which point we will promptly notify you that the suspension has been lifted.

10.3 You may choose to delete your Account at any time and for any reason by following the instructions within the App. If you delete your Account: (a) your access to your Account via the App will be terminated immediately; and (b) you will no longer be able to use the App to receive the Resources. You may choose to cease using one or more, or all, Resources at any time whilst keeping your Account open, and you do not need to notify us of your intention to do so.

10.4 It is important that you download and save any of your information that you need from your Account before it is deleted. If we end your rights to use the Resources and delete your Account, or if you choose to delete your Account, then we will: (i) securely delete or destroy; or (ii) if directed in writing by you within 10 days of your Account being deleted, return and not retain all or any of the personal data about you that is in our possession or control. Sometimes we may be required by applicable law to retain documents or materials containing your personal data and, if this is the case, we will tell you and provide relevant details (unless the law prevents us from doing so).

11. Our responsibility for loss or damage suffered by you

11.1 We do not exclude or limit in any way our liability to you where it would be unlawful to do so (including liability for death or personal injury caused by our negligence). We are responsible to you for loss or damage that you suffer which is a foreseeable result of our breaking these Terms or our failing to use reasonable care and skill. Loss or damage is foreseeable if either it is obvious that it will happen or if, at the time you accepted these Terms, both we and you knew it might happen. Should you need to make a claim against us under or in connection with these Terms, that claim shall only be brought against us (and not against any employee, contractor, officer or other representative of Erin Health).

11.2 Subject to clause 11.1, we are not liable for any costs, expenses, liabilities, damages or losses: (i) that are not foreseeable; (ii) arising out of your use, or attempted use, of the Resources for purposes for which they are not intended; (iii) arising out of your failure to comply with any of your obligations under these Terms (or with applicable laws); or (iv) arising out of your Account and/or the Resources being inaccessible or unavailable to you, or interrupted.

11.3 If defective digital content that we have supplied damages a device or digital content belonging to you, we will either repair the damage or pay you compensation. However, we will not be liable for damage that you could have avoided by following our advice to apply an update offered to you free of charge, or for damage that was caused by you failing to correctly follow installation instructions or to have in place the minimum system requirements advised by us.

11.4 If our performance of our obligations under these Terms is prevented or delayed by: (i) your failure to provide us with complete and accurate Account Data or any other information or resources that we reasonably request; (ii) the failure or underperformance of any physical or virtual networks or facilities, including communications networks; (iii) your Breach; and/or (iv) any other circumstance not within our reasonable control, then (without prejudice to any other right or remedy we may have) we will not be in breach of these Terms and we will be allowed an extension of time to perform our obligations equal to the delay caused.

12. Other important legal terms

These Terms, their subject matter and their formation are governed by English law. You and we both agree that the courts of England and Wales will have exclusive jurisdiction, except that if you are a resident of Northern Ireland you may also bring proceedings in Northern Ireland, and if you are a resident of Scotland you may also bring proceedings in Scotland. Subject to any terms implied by law, these Terms represent the entire agreement and understanding between us regarding your use of the Resources, and supersede and extinguish all previous agreements, promises, assurances, warranties, representations and understandings between us, whether written or oral, relating to the subject matter.

We may transfer our rights and obligations under these Terms to another organisation. We will always tell you in writing if this happens and we will ensure that the transfer will not affect your rights under these Terms. You may only transfer your rights or your obligations under these Terms to another person if we agree to this in writing. These Terms form a contract between you and us, and no person other than you and us has a right to enforce these Terms. Each provision of these Terms operates separately; if any court or relevant authority decides that any of them are unlawful, the remaining provisions will remain in full force and effect. If we delay taking steps against you in respect of your breach of these Terms, that does not mean that you do not have to remedy that breach and it will not prevent us taking steps against you at a later date.