Terms of use
Last updated 7 November 2026
About these terms
These terms are between you and Lumbus Technologies Limited (“Lumbus”, “we”, “us”), a company registered in England and Wales, number 16793515, with its registered office at 128 City Road, London EC1V 2NX, United Kingdom. They apply when you use the Lumby AI app or this website. By using Lumby you agree to them; if you don’t, please don’t use it.
How we handle your data is in our privacy policy. Nothing in these terms takes away your legal rights as a consumer.
What Lumby is
Lumby makes everyday apps for you from what you say: a medicines app, a budget, a journal, an alarm. Each app is kept on your phone, and you can change any part of it.
Lumby’s AI can write an app or change one, if you allow it. Without it, Lumby makes apps from its own starting points. Some features need an internet connection and an account, and some need a plan.
Your apps and records
What you make and record in Lumby is yours. It is kept on your phone, not by us, so we can’t bring it back if your phone is lost, reset or replaced. Use Export everything in Settings, or your phone’s own backup, to keep a copy. An app you share is the exception: see Sharing with other people.
When you ask the AI, you allow us to send what you type, and an app’s design when you change it, to the AI so that it can answer, as our privacy policy explains.
What the AI writes
The AI is part of Lumby, and we are responsible for it as we are for the rest of Lumby (see Our responsibility to you). Like any AI, it can get things wrong: Lumby checks what it writes, but please check an app before you rely on it.
Lumby is not a medical device. It does not give medical, financial, legal or other professional advice, and it does not check doses, interactions or what is safe for you. Follow the advice of your doctor, pharmacist or other professional.
Reminders depend on your phone: its notification settings, Focus or Do Not Disturb, battery saving, and whether it is switched on. Don’t rely on Lumby alone for anything where a missed reminder could harm you or someone else.
Sharing with other people
You can share an app so that other people join it, send someone a copy, and invite friends to Lumby. When you share, you are responsible for what you add, and so is everyone else for what they add.
There is no place in Lumby for anything abusive, hateful, sexual, threatening or unlawful, or for using a username or a shared app to harass, pretend to be someone else or send unwanted messages. You can block anyone, and report a person or a shared app from inside Lumby. We read every report within 24 hours, and remove what breaks these terms and the account that shared it.
An app you share is kept on our server, with what everyone in it adds, while it is shared. If you stop sharing it, everyone keeps their own copy. Extra asks from invites are for people new to Lumby, one set each; making accounts to collect them breaks these terms.
Using Lumby fairly
Please don’t use Lumby to:
- break the law, or help anyone else to;
- make anything meant to harm, harass or deceive other people;
- get around its limits, its safety checks or anyone’s account;
- copy, take apart or resell it, or reach its server other than through the app;
- overload it or disrupt it.
If an account is used in these ways, we may stop it from using the AI, or close it. Everything on your phone keeps working.
Your account
You need an account to use the AI and to share apps: you sign in with Apple, Google or a code by email. Lumby also makes a guest account if you send a report or buy a plan without signing in, which you can keep by signing in later. Keep access to the email address, or the Apple or Google account, you sign in with: it is how you get back into your account.
You can delete your account at any time, in Settings, then Account. A guest account that nobody uses for 90 days is deleted automatically.
Plans and payments
Some features need Lumby Plus. Before you buy, the app shows what a plan gives and its price, which the App Store or Google Play sets for your country.
- Plans are sold by Apple or Google, under their terms, and they take the payment.
- A subscription renews automatically until you cancel it in your App Store or Google Play subscriptions. Cancelling stops the next renewal, and your plan lasts to the end of the period you have paid for.
- A free trial, when one is offered, becomes a paid subscription when it ends, unless you cancel before then (on iPhone, at least 24 hours before).
- Refunds are handled by Apple or Google, under their rules.
- Deleting your Lumby account does not cancel a subscription. Cancel it in your store’s subscriptions first.
- How many times you can ask the AI depends on your plan, as the app shows: a number each month, or, on a plan with no monthly limit, a fair-use limit each day, which the app also shows. The limit each day keeps the AI quick and affordable for everyone. We may change what plans give, or their prices, with notice; where the store asks for your agreement to a higher price, it will ask you.
Changes to Lumby
We work to keep Lumby running well, but we can’t promise it will always be available or free of faults. We may change or stop features, and we may pause the AI for everyone while we put something right. Your apps keep working on your phone either way.
What belongs to us
Lumby, its software, its designs, its starting points, its words and its name belong to Lumbus or to those who license them to us. We give you a personal licence, which you can’t transfer, to use Lumby on phones you own or control, for your own use. Please don’t copy, change, share or sell it, except as the law allows.
Apple and Google
If you downloaded Lumby AI from Apple’s App Store, your licence to use the app is Apple’s standard licensed application end user licence agreement, and these terms apply alongside it. These terms are between you and Lumbus, not Apple, and Apple is not responsible for Lumby, for supporting it, or for any claim about it.
If you downloaded Lumby AI from Google Play, Google Play’s terms apply too.
You must also follow the terms of any other service you use with Lumby, such as your mobile network’s.
Our responsibility to you
If you are a consumer in the UK, you have legal rights when digital content or a service is faulty or not as described. Nothing in these terms affects them.
We are responsible for loss or damage you suffer that is a foreseeable result of our breaking these terms or of our failing to use reasonable care and skill. We are not responsible for loss or damage that is not foreseeable. Lumby is for personal use, so we are not responsible for any loss of business, profit or opportunity.
If something we supplied damages your phone or other digital content you own because we failed to use reasonable care and skill, we will either repair the damage or pay you fair compensation.
We do not exclude or limit our responsibility where it would be unlawful to do so, including for death or personal injury caused by our negligence, or for fraud.
Ending
You can stop using Lumby and delete your account at any time. We may suspend or close an account that seriously or repeatedly breaks these terms. If we decide to stop offering Lumby altogether, we will say so here and give you reasonable notice where we can.
The law and disputes
These terms are governed by the law of England and Wales. If you live in Scotland or Northern Ireland, you can also bring proceedings in your own courts. If something goes wrong, please write to us first: most problems can be put right quickly.
Changes to these terms
We may update these terms, for example when Lumby or the law changes. We will put the new terms here with a new date. If you keep using Lumby after a change, the new terms apply.
Contact us
Email lumby@getlumbus.com, or write to Lumbus Technologies Limited, 128 City Road, London EC1V 2NX, United Kingdom.