These Terms of Use govern the use of the Iséou app, operated by ICOSO CONSULTING SL ("Iséou"), Calle Juan de Herrera 18, 39002 Santander (Cantabria), Spain (EU). By registering or using Iséou, you accept these Terms and the Privacy Notice. These Terms are construed in accordance with the Consumer Defense Code (Law No. 8.078/1990 — CDC) and the Brazilian Internet Civil Framework (Law No. 12.965/2014 — Marco Civil); mandatory consumer-protection and data-protection provisions prevail over any contrary clause.
ELIGIBILITY
You must be at least 16 years old to use Iséou. By using it, you confirm that you have reached the required minimum age.
WHAT ISÉOU IS — AND IS NOT
Iséou is a lifestyle and wellness app for cycle tracking and self-knowledge. Iséou is NOT a medical device; it is NOT intended for diagnosis, treatment or contraception, and it does NOT replace the advice of a health professional. Predictions and indications are qualitative estimates, with no guarantee of accuracy. For any health matter, consult a health professional.
YOUR ACCOUNT AND SECURITY
Your health records are encrypted on your device (AES-256-GCM) before they are stored on our servers (the Privacy Policy describes which details are exempt and how the optional AI coaching processes data); in Maximum Privacy mode, we hold no copy of your key that we can open: on our servers it is stored only in encrypted form that just your password or signed-in device, or your Recovery Key, can unlock. You are responsible for keeping your password and, where applicable, your Recovery Key confidential. In Maximum Privacy mode, we CANNOT restore your access: if you lose your Recovery Key and also your password or access to your devices, the data is permanently lost.
SUBSCRIPTIONS AND PAYMENTS
Optional premium features are offered by subscription through Apple's App Store or Google Play. Billing, renewal and cancellation are managed in your store account, whose terms apply in addition to these. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period; you manage them in the relevant store's account settings. Payment is processed by Apple/Google — we do not receive bank or card data.
Right of withdrawal (CDC, art. 49): because this is a contract entered into at a distance, you may withdraw from the subscription within 7 days of contracting; where applicable, cancellation and refund also follow the procedures of the store (Apple/Google). Your consumer rights under the CDC are not restricted by these Terms.
ACCEPTABLE USE
You agree not to use Iséou in an abusive or unlawful manner or in a way that impairs its operation (e.g. automated scraping, circumventing security mechanisms, or overloading the services).
INTELLECTUAL PROPERTY
Iséou's software, design, texts and trademarks are protected. Your own content (e.g. journal entries) remains yours; you grant Iséou only the technical usage rights necessary to provide the service.
WARRANTY AND LIABILITY
Iséou is provided with reasonable care, but without guaranteeing uninterrupted availability or freedom from errors. Nothing in these Terms excludes or limits the supplier's strict liability for defects or for harm caused by the product or service (CDC, arts. 12–25), the statutory warranty (CDC, arts. 24 and 26), or any liability that the law does not permit to be excluded. Any limitation of liability applies only to the extent permitted by Brazilian law and never to the detriment of the mandatory provisions of the CDC.
CHANGES
We may modify these Terms. We will give advance notice of material changes; you may then delete your account if you do not agree with the new version. Continued use after the change takes effect constitutes acceptance.
TERMINATION
You may delete your account at any time in the settings. We may restrict or discontinue the service in the event of serious breaches.
GOVERNING LAW AND VENUE
These Terms are governed by Brazilian law as regards the mandatory provisions of consumer protection (CDC) and data protection (LGPD and Marco Civil). Nothing in these Terms waives your mandatory rights as a consumer or your right to bring an action in the courts of your own domicile, under art. 101, I, of the CDC.