Terms of use
Effective as of September 4, 2026
These terms govern the use of the eva.one website, the EVA One app and conversations with EVA over WhatsApp. By creating an account or using any of them, you agree to what is written here. Read the health section carefully: it defines what EVA can and cannot do for you.
EVA does not replace medical care
EVA is a tool for organizing and following habits and health information. It is not a medical device, it does not diagnose, it does not prescribe treatment and it does not change medication doses. The guidance it produces — including anything generated by artificial intelligence — supports self-care and may contain errors.
Decisions about your health must be made with a qualified professional. Never stop or adjust a treatment based on what EVA says. In an emergency, seek immediate care or call your local emergency service — EVA does not handle emergencies and does not monitor your messages in real time.
Who can use it
The service is intended for people aged 18 and over. By creating an account, you declare that you meet the minimum age and have legal capacity, and you undertake to provide truthful information — including the statement that you have a prescription and medical follow-up when you register medicines that require one.
Your account
You are responsible for keeping your credentials safe and for everything that happens in your account. The account is personal and non-transferable: do not share it. If you suspect unauthorized access, tell us immediately. We may close accounts that breach these terms, with notice whenever possible.
Plans, subscription and cancellation
EVA has free features and subscription features. When you subscribe inside the app, the purchase is processed by the App Store (Apple) or Google Play, depending on your device:
- The current price and period are shown by the store before you confirm. EVA never receives or stores your card details.
- The subscription renews automatically at the end of each period until you cancel.
- Cancellation is done in the store itself: on iPhone, in Settings → your name → Subscriptions; on Android, in the Google Play Store → Payments and subscriptions. Cancelling stops future charges and access continues until the end of the period already paid for.
- Refund requests follow the rules of the store where the purchase was made — EVA does not process those refunds.
- Deleting your EVA account does not cancel the store subscription: cancel in both places.
One-off purchases, such as marketplace protocols, are charged at the time of purchase and grant access to the content bought. We may change prices and what each plan includes; changes apply to subsequent periods, never retroactively.
Professionals and organizations
EVA lets you link your account to a health professional, physical educator or organization. These professionals are independent: they are not employees or agents of EVA, and the professional-patient relationship is between you and them. EVA provides the tool through which the information you authorize is shared; technical responsibility for the guidance given lies with the professional, subject to their own regulatory body.
You decide what to share, by category, and you can end the link whenever you want.
WhatsApp channel
Talking to EVA over WhatsApp is optional and requires linking your number inside the app. Messages exchanged there are part of the same conversation you see in the app. To stop receiving messages, reply "PARAR" (stop) at any time. WhatsApp is a third-party service subject to Meta's terms; data charges from your mobile plan are your responsibility.
Acceptable use
By using EVA, you agree not to:
- Use the service for unlawful purposes, or to give clinical guidance to others without being qualified to do so.
- Upload another person's data without their knowledge and authorization.
- Attempt to bypass limits, quotas, authentication or security mechanisms, or access other people's accounts.
- Scrape content automatically, reverse engineer the service or resell access.
- Publish, in the social area, content that is offensive, misleading, infringes third-party rights or promotes practices dangerous to health.
The content you upload
What you record in EVA remains yours. You grant us only the licence needed to operate the service: to store, process and display that content to you, to whoever you authorize, and to the providers that carry out processing on our behalf. When you publish something in the social area, that content is visible to the people you share it with, according to the settings you choose.
Availability and changes
We work to keep the service running, but it may be unavailable due to maintenance, failures or factors beyond our control. We may change, suspend or discontinue features. When a change is significant, we give reasonable prior notice through the app or by email.
Termination
You may close your account whenever you want, directly in the app, and data deletion follows what we describe on the deletion page. We may suspend or terminate access in case of breach of these terms, fraudulent use, risk to other people's security, or legal requirement.
Intellectual property
The EVA brand, logo, software, texts, images and content of the site and the app belong to EVA Tecnologia Ltda or its licensors. You receive a personal, limited, revocable and non-exclusive licence to use the service. Nothing in these terms transfers ownership. Third-party trademarks mentioned belong to their respective owners and are cited for identification only.
Limitation of liability
EVA is liable within the limits of Brazilian law, including the Consumer Protection Code. We are not liable for clinical decisions taken by you or by professionals based on information in the service, for unavailability of third-party services (stores, messaging providers, wearables), or for incorrect data you entered yourself. Nothing here excludes rights the law grants you as a consumer.
Applicable law and jurisdiction
These terms are governed by Brazilian law. The jurisdiction of the consumer's domicile is elected to resolve any dispute, unless the law provides otherwise.
Changes to these terms
We may update these terms. The current version is always published on this page, with the date at the top. If a change is significant, we notify you in the app or by email before it takes effect. Continuing to use the service after that means you accepted the new version.
Privacy and your data
How we handle your data is detailed in the Privacy policy. To erase your account and your data, the steps are in Account and data deletion.
Contact
These terms are offered by EVA Tecnologia Ltda, CNPJ 65.228.711/0001-63, Avenida Paulista, 2001, suite 1018 — Bela Vista, São Paulo/SP, 01311-931, Brazil. Questions? Write to suporte [arroba] eva.one.