These apply when you use the Rilver app or this website. They are written to be read, not to be impenetrable.
Last updated
19 August 2026
Provided by
Noah Gwynn
Rilver is not a medical device
It changes how text is displayed on your screen. It does not diagnose, screen for, treat or correct any condition, and no result it produces is a clinical finding. It is not a substitute for an eye examination or for professional advice.
What the service is
Rilver takes text from sources you choose (newsletters in a mail folder you nominate, links you paste, pages you photograph) and displays it in colours and typography you have set or measured. It can also read articles aloud.
The colour test finds the background you report as easiest to read on the device you take it on. It is a preference measurement, not a diagnosis, and the evidence base for coloured overlays is genuinely mixed. It may conclude that colour makes no difference for you.
Your account
You must be 18 or over to hold an account.
One person per account. Do not share your sign-in link.
Keep your email account secure, since anyone who can read your mail can request a sign-in link.
You keep whatever rights you already have in the mail, links and pages you bring into Rilver. You give permission only to process them in order to show them to you: fetch, extract, format, narrate and store them for that purpose.
You are responsible for having the right to use what you import. Do not use Rilver to get around a paywall, to copy material you have no right to, or to import anything unlawful.
Fair use
Narration and article imports cost real money per use, so a subscription carries a usage allowance and the app shows you where you are against it. We may limit or suspend use that is automated, abusive, or plainly outside what one person reads.
Do not attempt to break, overload, reverse-engineer or gain unauthorised access to the service.
Subscriptions
Where Rilver is sold as a subscription, it is billed by Apple or Google through your app store account, not by us directly. Payment is taken when you confirm, and renews automatically unless you cancel at least 24 hours before the period ends.
Cancel through your app store account. Deleting the app does not cancel a subscription. Refunds are handled by the store under its own policy.
What a subscription costs, what it includes, and how long any free trial runs are shown in the app and on the App Store before you are asked to pay. Prices differ by country, and the store shows yours in your own currency.
The stores are not party to this agreement. These terms are between you and us, not with Apple or Google. Neither has any obligation to provide support or maintenance for Rilver, and neither is responsible for it. Apple and its subsidiaries are third-party beneficiaries of these terms and may enforce them against you as a user of an app obtained through the App Store.
Availability
Rilver depends on services run by other people: mail providers, speech synthesis, and the network. It will sometimes be unavailable, and features may change or be withdrawn. Where a change materially reduces what you have paid for, you will be told in advance.
Liability
The service is provided as it is. To the extent the law allows, we are not liable for indirect or consequential loss, for loss of data you have another copy of, or for anything arising from relying on Rilver as medical advice, which it is not.
Nothing here limits liability for death or personal injury caused by negligence, for fraud, or for anything else that cannot lawfully be limited. If you are a consumer, your statutory rights are unaffected.
Ending it
You can stop using Rilver and delete your account at any time. We may suspend or close an account that breaches these terms, and will say why unless we are prevented from doing so.
Changes, law and contact
These terms may change. The date at the top changes with them, and material changes are notified in the app before they take effect.
These terms are governed by the law of England and Wales, and its courts have jurisdiction. If you are a consumer, none of that takes away the protection you have under the law of the country you live in.