Last updated: 7 September 2026

1. Who we are

Glucogaze (“Glucogaze”, “we”, “us”, “our”) is a non-commercial personal project operated by a private individual under the name Glucogaze, based in Manchester, England. You can reach us at legal@glucogaze.com.

“The Service” in these terms means this website, the Glucogaze account and dashboard, the APIs that our devices talk to, and the Glucogaze firmware — together with any documentation and support we happen to provide.

2. Accepting these terms

By visiting this site, creating an account, running our firmware or otherwise using the Service, you agree to these Terms of Service. Please read them carefully. If you do not agree to all of them, you must not use the Service.

Two further documents form part of this agreement and you should read them alongside it: our Disclaimers, which cover safety and the limits of what Glucogaze can do, and our Privacy Policy, which covers your personal data. Where the Disclaimers and these terms overlap, both apply; if they genuinely conflict, the Disclaimers take precedence on matters of safety.

3. Who may use Glucogaze

You must be at least 18 years old to create a Glucogaze account. Glucogaze handles health data, and we are not set up to obtain or verify parental consent for account holders who are children.

A parent or guardian may of course hold an account and use it to follow a child’s glucose — see section 7. If you are under 18 and want to use Glucogaze for your own data, please ask a parent or guardian to hold the account.

Glucogaze is offered from the United Kingdom and written for UK users. You may use it from elsewhere, but you are responsible for complying with any local law that applies to you, and we make no representation that the Service is appropriate or available in any particular jurisdiction.

Glucogaze is for personal and family use only. It must not be used in any professional, clinical, care or institutional setting — for example by a care home, school, nursery, clinic, hospital or employer — as part of looking after patients, residents, pupils or staff. It has none of the safeguards, validation or support that such use would need.

4. Glucogaze is free

The Service is provided free of charge. We do not sell it, we do not charge subscriptions for it, we do not sell advertising on it, and we do not sell your data. We do not sell, supply or distribute hardware.

Because nothing is paid for, nothing here is a consumer sale of goods, digital content supplied for a price, or a supply of services for consideration. There is no price to refund. If we ever introduce a paid element, we will publish separate terms for it and ask you to agree to them before you pay anything.

We are not a trader. The Service is not offered in the course of any business, trade or profession; it is a hobby project that one person has chosen to share, and we make no money from it. The exclusions and limits in these terms are set with that in mind — nobody is being paid to carry the risks of your use of it.

5. Not a medical device

6. Your account

You are responsible for the security of your account: for keeping your password and any sign-in method confidential, for everything done through your account, and for telling us promptly at legal@glucogaze.com if you believe it has been compromised.

You agree to give accurate account information and to keep it up to date, and not to share your account with anyone else or to access an account that is not yours.

Devices you pair with your account hold their own credentials. If you lose a device, or give one away, revoke it from your dashboard — that immediately and permanently stops it receiving your data.

7. People you look after

Glucogaze lets one account follow more than one person. If you add anyone other than yourself, you confirm that:

• you have the authority to do so — either because you hold parental responsibility for them, or because they have given you their informed, explicit and freely-given consent;
• you have told them, in a way they can understand, what Glucogaze is, that it is unofficial and unregulated, and what data of theirs it will hold; and
• you will remove them from your account promptly if that authority or consent is withdrawn.

You remain responsible for how you use their data and for the physical placement of any screen showing it — a display in a shared room reveals health information to everyone who walks past.

If you add someone without the authority or consent described above, the consequences — including any complaint or claim that person brings — are your responsibility, not ours. See section 19.

8. Your data sources

Glucogaze reads glucose data from third-party services you connect, such as FreeStyle LibreLink Up or a Nightscout site. We are not affiliated with, endorsed by or supported by any of those providers, and some of the interfaces we use are unofficial or undocumented.

By connecting a source you confirm that:

• the account and credentials are yours to use, or you are authorised to use them on behalf of the person whose data they are;
• you have read and will comply with that provider’s own terms of service, and you accept that connecting Glucogaze may breach them and may cause that provider to restrict or close your account with them — and that any such consequence, including losing your account or the data you hold with that provider, is yours to bear; and
• you accept that we cannot control what that provider does, and that they may change, restrict or withdraw access at any time and without notice.

If that happens, the Service may be reduced, interrupted or permanently unable to show your data. That is an inherent characteristic of an unofficial integration and is not a defect, a failure, or a breach of any obligation we owe you. We will make reasonable efforts to restore compatibility where we can, but we do not promise that we will succeed or that we will keep trying.

We store source credentials encrypted, and we use them only to fetch your own data — see the Privacy Policy. You can disconnect a source at any time, and you should also change the password at the provider if you want to be certain.

9. Hardware and firmware

We do not sell, supply, distribute or import hardware, and we have no relationship with the manufacturers or sellers of any device Glucogaze runs on. You buy your own device from a third party. Your rights over that purchase — including any warranty, guarantee or right of return — are between you and that seller, and we are not a party to them.

The Glucogaze firmware is provided free of charge, as is, for you to install at your own risk. Installing it can permanently disable a device and will usually void the manufacturer’s warranty. You are responsible for choosing a suitable device, installing the firmware correctly, and for the electrical and fire safety of what you build, power and site — including any lithium-ion cell. See the Disclaimers for the detail.

Firmware updates are offered, not imposed. We may stop publishing updates, or stop supporting a device type, at any time. A device whose firmware we no longer support may stop working with the Service.

10. Availability and changes

We do not promise that the Service will be available, uninterrupted, timely, secure or error-free. It runs on free and low-cost infrastructure, it depends on third parties, and it is maintained by one person in their spare time.

We may change, suspend, limit or discontinue the Service or any part of it — including features you rely on — at any time, with or without notice. Where we can reasonably give notice of a change that will significantly affect you, we will try to. We will not be liable to you or to anyone else for any modification, suspension or discontinuation.

That includes shutting the Service down for good. If we do, we will try to give notice and a window in which to export your data, but we do not promise either. We do not promise to keep backups or to recover data that is lost, corrupted or deleted, for any reason. If there is anything you would miss, export it regularly — Settings lets you do that at any time.

11. Acceptable use

You must not use the Service:

• for any unlawful purpose, or to break any law that applies to you;
• to access, or attempt to access, any account, data or system that is not yours — including other users’ data;
• to upload or transmit malware, or anything designed to damage, disable or impair the Service or any related system;
• to probe, scan, or circumvent authentication, rate limiting or any other security feature, except as expressly permitted under section 22 (responsible disclosure);
• to scrape, crawl, spider or harvest data from the Service, or to place unreasonable load on it — including by polling our APIs or a provider’s APIs more often than the Service does itself;
• to impersonate anyone, to submit false information, or to misrepresent your connection with any person;
• to resell, sublicense or commercially exploit the Service, or to offer it to others as a paid or monitored service; or
• to harass, abuse, threaten or defame anyone, or to infringe anyone’s rights.

You must also not present Glucogaze to anyone else as a medical device, as a monitoring service, or as something that can be relied on for treatment decisions.

12. Intellectual property

The Service, its design, its content and the Glucogaze name and logo belong to us or to our licensors, and are protected by intellectual property law. Except as these terms or an open-source licence allow, you may not copy, modify, distribute, sell or create derivative works from the Service.

Some components are made available under open-source licences, which take precedence over this section to the extent they conflict. Third-party names and marks are the property of their owners and are used only to describe compatibility. See the Legal page.

13. Your content and feedback

You keep ownership of the data and content you put into the Service. You grant us only the limited permission needed to run it for you — to store your data, to fetch it from the sources you connect, and to send it to the devices you have paired.

If you send us feedback, bug reports or suggestions, you agree we may use them without restriction, without obligation of confidence, and without owing you payment or attribution. Please do not send us anything you consider confidential.

14. Privacy

Your personal data is handled as described in our Privacy Policy, which explains what we collect, our lawful bases for using health data, who processes it for us, how long we keep it and what rights you have.

15. Beta testing

Glucogaze is currently in closed beta. Beta features are experimental and are likely to be less stable than described anywhere else: they may fail, behave unexpectedly, be withdrawn, or lose data. Beta participation is free, is voluntary, creates no employment, agency or partnership relationship, and can be ended by either of us at any time.

Taking part does not entitle you to any payment, hardware, reward or continued access. Any hardware you buy to take part is yours, bought from a third party at your own cost and risk.

16. Ending this agreement

You may stop using the Service at any time, and you can delete your account from your settings — that erases your account and the data attached to it, as described in the Privacy Policy.

We may suspend or terminate your access, with or without notice, if you breach these terms or the Disclaimers, if we reasonably believe your use puts other users, our providers or us at risk, or if we discontinue the Service. Where it is reasonable to do so we will tell you first and give you a chance to put things right.

Sections that by their nature should survive termination — including sections 12, 13, 17, 18, 19, 21 and 23 — continue to apply afterwards.

17. No warranties

The Service and everything provided through it are supplied “as is” and “as available”, without representation, warranty or condition of any kind, whether express or implied. To the fullest extent permitted by law we exclude all implied terms, including any implied terms as to satisfactory quality, fitness for a particular purpose, accuracy, availability, or non-infringement.

In particular, we do not warrant that:

• the Service will be available, uninterrupted, timely, secure or error-free;
• any reading, trend, statistic or alert shown will be accurate, current, complete or delivered at all;
• any defect will be corrected, or any lost connection restored; or
• the Service will remain compatible with any third-party provider, device or firmware.

Anything we say in documentation, support replies, release notes or anywhere else is offered on the same basis. It is not advice, and it is not a representation you should rely on.

This section does not affect any statutory rights you have that cannot lawfully be excluded or restricted.

18. Our liability to you

Nothing in these terms limits or excludes our liability for:

• death or personal injury caused by our negligence;
• fraud or fraudulent misrepresentation;
• any other liability that cannot lawfully be limited or excluded, including your non-excludable rights as a consumer.

Subject to that, and to the fullest extent permitted by law: we provide the Service free of charge for your personal, non-commercial use, and we are not liable to you for any loss or damage arising from your use of, or inability to use, it. This includes, without limitation, indirect or consequential loss, loss of profit, revenue, savings, business or opportunity, loss or corruption of data, and loss arising from any reading being late, missing, wrong, or from any alert not being delivered.

Where liability cannot be excluded but can be limited, our total liability to you for all claims connected with the Service, taken together, is limited to the total amount you have paid us for the Service. While the Service is free, that amount is nothing.

We are not liable for the acts, omissions, availability, accuracy or terms of any third party — including CGM providers, Nightscout instances, hardware manufacturers and sellers, or our own infrastructure suppliers — nor for any loss caused by your failure to keep approved devices and their alarms in use.

You accept that we have told you, prominently and repeatedly, not to rely on the Service for any health, safety or treatment purpose. If you rely on it anyway, you do so against our instructions and at your own risk, and any loss that follows is a loss you could have avoided by following them. We will rely on this if a claim is ever made.

You use the Service at your own risk, and you remain responsible for managing your health using approved devices and professional advice.

19. Your liability to us

If you use the Service in breach of these terms — for example by misusing our APIs, breaking the acceptable use rules, using it in a professional or institutional setting, adding a person without the authority section 7 requires, or using someone else’s credentials without authority — you are responsible for the reasonable losses, costs and claims we suffer as a direct result. That includes any claim brought against us by the person whose data you added or by the provider whose terms you broke.

This does not make you responsible for losses that were not a reasonably foreseeable result of your breach, and it does not affect your statutory rights.

20. Changes to these terms

We may update these terms from time to time — for example to reflect changes to the Service, to our providers, or to the law. The version on this page is always the current one, and the date at the top tells you when it last changed.

If a change materially affects your rights, we will make reasonable efforts to tell you before it takes effect, by email or by a notice in the Service. Continuing to use the Service after a change takes effect means you accept it. If you do not accept it, stop using the Service and delete your account.

21. General

Whole agreement. These terms, together with the Disclaimers and the Privacy Policy, are the whole agreement between us about the Service and replace anything said or written before.

Severability. If any provision is found unlawful, void or unenforceable, it is severed to the minimum extent necessary and the rest continues in force.

No waiver. If we do not enforce a right straight away, we have not given it up.

Transfer. You may not transfer your rights under these terms without our consent. We may transfer ours if the Service changes hands, provided your rights are not harmed.

Third parties. Nobody other than you and us has any right to enforce these terms under the Contracts (Rights of Third Parties) Act 1999.

Events outside our control. We are not liable for failures caused by events outside our reasonable control, including provider outages, internet or power failures, and acts of the third parties the Service depends on.

22. Complaints, and reporting a security problem

If something has gone wrong, please tell us at legal@glucogaze.com and we will do our best to put it right. Complaints about how we handle personal data are covered in the Privacy Policy, which also explains your right to complain to the Information Commissioner’s Office.

If you believe you have found a security vulnerability, please report it privately to legal@glucogaze.com and give us a reasonable chance to fix it before disclosing it. We will not pursue you for good-faith research that stays within your own account, does not access anyone else’s data, does not degrade the Service for others, and stops at the first sign of a real vulnerability.

23. Governing law and jurisdiction

These terms and any dispute arising out of them or the Service are governed by the law of England and Wales, and the courts of England and Wales have exclusive jurisdiction.

If you are a consumer resident elsewhere in the United Kingdom, you keep the benefit of any mandatory protections of the law of your home nation, and you may bring proceedings in the courts of Scotland or Northern Ireland as applicable. If you are a consumer resident outside the United Kingdom, nothing here deprives you of any protection given to you by mandatory rules of the law of your country of residence.