About these terms
These terms are the agreement between you and Crysto Ltd, the company that runs Zyvae (“we” or “us”). They cover the Zyvae app, this website and the waitlist. By creating an account or using Zyvae, you agree to them.
Our privacy policy explains how we handle your data. It is part of these terms.
If you got Zyvae from the App Store, your licence to use the app is Apple’s standard Licensed Application End User License Agreement, together with these terms. If the two conflict, these terms apply, except where the Apple agreement gives you more rights.
Who can use Zyvae
You must be 16 or over to use Zyvae. If the law where you live sets a higher age for agreeing to terms like these, you must meet that age too.
Your account
Give us accurate details when you sign up and keep your login safe. You are responsible for what happens on your account. If you think someone else has used it, email us straight away.
Not medical advice
Zyvae gives general wellness information. It is not a medical device and does not diagnose, treat or prevent any condition. Its scores, swaps and recipes are not a substitute for advice from a doctor, dietitian or other professional.
If you have an allergy, intolerance, eating disorder, pregnancy or any health condition, do not rely on Zyvae to decide what is safe to eat. Always check labels and ask a professional. If you think you are having a medical emergency, contact emergency services.
AI analysis and accuracy
Zyvae uses AI, provided by Anthropic, to recognise food in photos, menus and voice note text, and then scores the meal against your goal. You allow this on the AI analysis screen and can withdraw that permission in Account settings at any time.
AI can get things wrong. It can miss an ingredient, misjudge a portion or mistake one dish for another, so calories, nutrients and scores are estimates.
Check what Zyvae shows you, and edit it when it is wrong. Dietary labels such as vegan, halal or kosher are guides based on what the AI can see, not a certification.
Zyvae Pro and payments
Zyvae is free to use with some limits. Zyvae Pro is an auto-renewing subscription that unlocks more features. Before you pay, we show the price, billing period and what Pro includes, as the App Store provides them. Apple takes the payment, and we never see your card details.
- Payment is charged to your Apple ID when you confirm the purchase, or at the end of a free trial if you started one.
- Your subscription renews automatically unless you cancel it at least 24 hours before the end of the current period. Your account is charged for the renewal within 24 hours before the period ends.
- You can manage or cancel the subscription in your Apple account settings. If you cancel during a free trial, you aren’t charged.
- If we change the price, Apple will tell you first, as its rules require.
Cancelling and refunds
You can cancel at any time in your Apple account settings. Cancelling stops the next renewal, and Pro stays on until the end of the period you paid for.
Refunds for App Store purchases are handled by Apple through reportaproblem.apple.com. Nothing in these terms takes away rights you have by law.
Beta and waitlist
Joining the waitlist does not create an account or commit you to anything. We will only email you about Zyvae’s launch and access, and you can ask us to remove you at any time.
Beta versions of Zyvae, including TestFlight builds, may be unfinished and can change or break. We may give beta testers Pro features for free, and we may end that access when the beta ends.
Your content
Your meal photos, voice note text, logs and goals stay yours. You give us permission to store and process them only so we can run Zyvae for you, as the privacy policy describes. We do not use them to train AI models, and that permission ends when you delete them or your account.
Only upload content you have the right to share.
Using Zyvae fairly
Please do not
- break the law or anyone else’s rights while using Zyvae
- upload anything harmful, offensive or unrelated to food
- try to hack, overload, copy or reverse engineer Zyvae
- use bots or scripts to scan in bulk or get round usage limits
- resell Zyvae or share Pro access outside what your plan allows
Our content
The Zyvae name, logo, app, recipes, scoring system and website belong to Crysto Ltd. You can use them for your own personal use of Zyvae, but not copy or reuse them otherwise without our permission.
Changes to Zyvae
We are always improving Zyvae, so features may change, and now and then the app may be unavailable for maintenance. If a change takes away something important from Zyvae Pro, we will tell you in advance so you can cancel before your next renewal.
Closing your account
You can delete your account at any time in Profile, Account settings, Delete account, or by emailing theo@zyvae.app. This deletes your data as the privacy policy describes. Deleting your account does not cancel an App Store subscription, so cancel that in your Apple account settings too.
We may suspend or close an account that seriously or repeatedly breaks these terms. We will tell you why, unless the law stops us.
Our responsibility to you
We provide Zyvae with reasonable care and skill. We are responsible for loss you suffer that is a foreseeable result of us breaking these terms or being careless.
We are not responsible for
- decisions you make about your diet or health based on Zyvae’s results
- loss that was not foreseeable
- business losses, since Zyvae is for personal use
- problems caused by things outside our reasonable control
Nothing in these terms limits our responsibility for death or personal injury caused by our negligence, for fraud, or for anything else the law does not allow us to limit.
Law and disputes
If something goes wrong, please email us first and we will try to sort it out. These terms are governed by the law of England and Wales, and you can bring a claim in the courts of England and Wales. If you live in Scotland, Northern Ireland or the EU, you keep the protection of your local consumer law and can also bring a claim in your local courts.
Changes to these terms
We will update this page when things change and show the new date at the top. For big changes, we will tell you in the app or by email before they apply. If you do not agree, you can stop using Zyvae and delete your account.
Contact
Crysto Ltd
19 Barnard Road, London SW11 1QT
Company number 17341542, registered in England and Wales
theo@zyvae.app