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Terms of Use
Last updated: October 10, 2026 · Version: 1.10
👉 In short:
- YOLKI is a technology platform for the longevity and well-being of dogs and cats, operated by Coflint OÜ, in Tallinn, Estonia.
- YOLKI has a free plan and paid features, and displays no advertising. The Solo plan is free; the Duo plan is a paid subscription, and the monthly Duo starts with 14 days free for anyone who has never subscribed; the veterinary consultation by video is charged per appointment or per package — with prices and conditions displayed in the app before you confirm. If we ever start displaying advertising, we will notify you and update these Terms beforehand.
- Remote veterinary guidance by video is provided by independent partner veterinarians and clinics, registered with the CRMV. It is not for emergencies and does not replace an in-person consultation. The AI assistant provides guidance based on the data you enter, without analysing photos, and does not diagnose or prescribe.
- Use is restricted to people aged 18 or over. You accept these Terms by ticking the acceptance checkbox during sign-up; AI-personalised content depends on a second, optional checkbox.
- You can delete your account and your data inside the app or through a web channel. As a Brazilian consumer, you may bring proceedings against Coflint in the courts of your own domicile.
1. Who offers YOLKI
The party responsible for the app and for the processing of your data is Coflint OÜ.
- Legal name: Coflint OÜ (a company incorporated in Estonia).
- Registry code (registrikood): 17294431.
- Registered office: Sepapaja tn 6, 15551 Tallinn, Harju maakond, Estonia.
- Contact and support e-mail: [email protected]. Website: https://yolki.pet.
Coflint OÜ is an Estonian company (European Union). We have no company, branch or CNPJ (Brazilian corporate taxpayer registration) in Brazil — we merely make YOLKI available to the Brazilian public. Even so, because we offer the app to people in Brazil, we comply with the Lei Geral de Proteção de Dados (LGPD — Brazil's General Data Protection Law, Law No. 13.709/2018), in addition to the applicable European rules. Wherever these Terms say "we", "Coflint" or "YOLKI", they refer to Coflint OÜ.
2. How you accept these Terms
You accept these Terms by ticking the acceptance checkbox during sign-up — without it, there is no access to the app.
- At the end of the sign-up flow there are two separate checkboxes, and neither of them comes pre-ticked.
- Acceptance (mandatory): by ticking it, you declare, at the same time, that: you are 18 years of age or older; you have read and accept these Terms of Use; and you have read and accept the Privacy Policy.
- AI-personalised content (optional): a second checkbox by which you authorise the use of artificial intelligence to personalise content for you and your pet (section 7 and the Privacy Policy). You can use YOLKI without ticking it, and you can enable or disable this option later, in the app settings.
- If you do not agree, do not tick the acceptance checkbox and do not use YOLKI.
👉 In short: a deliberate click counts as signing the contract ("clickwrap" model).
3. Minimum age: 18
YOLKI is exclusively for people aged 18 or over.
- When you sign up, you declare that you are 18 years of age or older (in the acceptance box itself). Use by persons under 18 is prohibited.
- If we identify that a user is a minor, we may suspend or terminate the account.
4. Definitions
- YOLKI: the pet longevity and well-being app operated by Coflint OÜ.
- Coflint OÜ ("Coflint"): the company that offers the technology platform and controls the data.
- User or pet owner (tutor): you, a person aged 18 or over who uses the app, normally responsible for one or more pets.
- Partner veterinarians and clinics: independent veterinary professionals and clinics, in Brazil, registered with the CRMV (Conselho Regional de Medicina Veterinária — Brazil's regional veterinary medicine council) and registered on the platform as providers of the veterinary act (the remote veterinary guidance).
- Remote veterinary guidance (teleorientação): veterinary guidance provided remotely, by video, by those partner professionals/clinics.
- AI assistant: the app's assistant, which generates educational guidance based on the data you enter about your pet. It does not analyse photos.
- User content: what you submit to the app — for example, text and, in remote veterinary guidance, photos of your pet.
5. What YOLKI is (and each party's role)
YOLKI is a technology platform for the well-being of dogs and cats — it is not a clinic and does not perform veterinary acts.
- Coflint provides and maintains the app, the technology and the user experience.
- The veterinary act (remote veterinary guidance by video) is provided by independent partner veterinarians and clinics, registered with the CRMV — they are responsible for the care provided. At the time of the consultation, you are informed which professional or clinic you will be speaking to.
- Coflint intermediates the contracting of that consultation and charges you the corresponding amount, in its capacity as a technology platform, passing on to the partner veterinarian or clinic the fee agreed with them (section 9). Coflint does not perform the veterinary act and does not interfere with the clinical conduct of the professional.
- The video call for consultations uses the infrastructure of a third-party provider.
👉 In short: we connect you to the service; the clinical guidance comes from the partner clinic.
6. Remote veterinary guidance: what to expect (and what not to expect)
Remote veterinary guidance is remote support — it is not an emergency room and does not replace taking your pet to a veterinarian.
- The video appointment is provided by the partner clinic and is guidance in nature.
- It is not emergency care. In urgent or serious cases, seek in-person veterinary care immediately.
- Remote veterinary guidance does not replace physical examination, complementary tests or in-person treatment. Where necessary, the appropriate guidance is precisely to seek in-person care.
7. AI assistant: it guides, but it does not diagnose
The AI assistant gives general, educational guidance — it is not a veterinarian.
- The assistant and the AI-personalised content only work if you authorise them, through the optional sign-up checkbox (section 2), with a reinforced notice before the first conversation. You can disable this option at any time in the settings — the app keeps working, with generic content.
- The AI answers questions and generates guidance based on the data you enter about you and about your pet (species, breed, age, weight, etc.). The AI does not analyse photos of your pet.
- The AI does not diagnose, does not prescribe medicines or treatments and does not replace assessment by a veterinarian.
- Content generated by the AI is informational and educational in nature and may contain inaccuracies. Decisions about your pet's health must be based on professional assessment.
- You can report an inappropriate answer or content directly in the app; our team reviews the reports.
8. Ancillary features: education and PetMatch
- Gamified education provides learning content about pet care. Part of this content (for example, the Discoveries) is generated with artificial intelligence — personalised for you and your pet when you authorise AI (section 7), or in a generic version when you do not.
- This content is informational and educational in nature, may contain inaccuracies and does not replace veterinary guidance.
- PetMatch is a quiz that suggests breeds based on your answers. The recommendations are indicative, with no guarantee that they suit your specific circumstances.
9. Free plan, paid features and advertising
YOLKI has a free plan, paid features and displays no advertising.
- The Solo plan is free and remains available. The Duo plan is a paid subscription, and the veterinary consultation by video is charged per appointment or per package. Every price is shown in the app before you confirm.
- Paid features: the Duo subscription (monthly or annual), which unlocks additional features and the member price for consultations; a one-off veterinary consultation by video; and a package of consultations. Prices and conditions are displayed in the app before you sign up.
- In what capacity we charge: the veterinary consultation by video is provided by the partner veterinarian or clinic (section 5), and Coflint charges you the price of that consultation in its capacity as a technology platform intermediating the contracting, passing on to the professional or clinic the fee agreed with them. The price to the user and the commercial policy — including packages, discounts and promotions — are set by Coflint.
- Free trial: the monthly Duo plan includes a 14-day free trial for anyone who has never subscribed to Duo. When the trial ends, the subscription is charged and renews every month until you cancel. Cancel in your store's subscription settings before the 14 days end and you won't be charged. The annual plan has no free trial.
- Subscription and renewal: the subscription renews automatically at the end of each contracted period, until you cancel. You can cancel at any time in the app store's subscription settings; the cancellation takes effect at the end of the period already paid for.
- Billing: handled by Apple's or Google's in-app purchase system and, where the store rules permit, by other payment methods indicated in the app. Those providers are the ones who process the payment and receive the card details — Coflint has no access to your card data.
- Advertising: today YOLKI displays no advertising. If we ever start displaying it, we will notify you and update these Terms and the Privacy Policy beforehand — and we undertake here and now that the advertisements will be contextual, not personalised on the basis of your profile, without individual targeting and without cross-app tracking, including where they are displayed before content (pre-roll).
Every consultation you purchase or receive — including gifted, partner-coupon or campaign consultations — can be used for up to 12 (twelve) months from the date it was added to your account. The date of the next consultation to expire is shown in the app, on your profile and on the scheduling screen. A consultation scheduled within the validity period remains valid even if it takes place after that date. If a consultation paid for with credit is cancelled, the credit is returned to your account with its original expiration date — and, if that date has already passed, with an extra 30 (thirty) days to use it.
Because this is a contract entered into away from business premises, you may withdraw from the subscription or the purchase within 7 (seven) days of entering into it, with a refund of the amounts paid, under art. 49 of the CDC. You may cancel the subscription at any time; cancellation stops future renewals. Where the purchase was made through the app store, the refund also follows the rules of the respective store.
10. Account and social login
- Sign-up and authentication are carried out via Google and Apple.
- You are responsible for keeping your credentials confidential and for all activity on your account.
- Notify us immediately at [email protected] if you suspect unauthorised use.
11. Your content remains yours
- Ownership of user content (text, photos of the pet) remains with you.
- You grant Coflint a limited, non-exclusive licence to host, process and display that content only to the extent necessary to operate YOLKI and provide its features.
- This licence lasts for as long as it is necessary to provide the service, terminates when your account is deleted (save for legally required retention) and respects the purpose limitations and your rights under the LGPD.
12. How we handle your data in the AI
- Data is sent to the AI service for the assistant and personalised content only with your authorisation (sections 2 and 7). With it, we send data from your profile (such as your name and, if you have provided them, age, gender and approximate location), structured data about the pet and the text you write — without photos — applying the principle of data minimisation.
- In teleguidance, the consultation transcript is used to generate, with AI, the consultation summary, as part of that service — details in section 9 of the Privacy Policy.
- Processing uses OpenAI's AI models offered by Microsoft through the Azure OpenAI service, running on cloud infrastructure in the European Union. This content is not used to train third-party models.
- Further details — including the auxiliary search and maps services used in generating content, and international transfers — are set out in the Privacy Policy.
13. Privacy and your rights (LGPD)
- The processing of your personal data is described in detail in the Privacy Policy, which forms part of these Terms.
- You have the data subject rights set out in art. 18 of the LGPD — among them: confirmation and access, correction, anonymisation, portability, deletion and information about data sharing.
- Data Protection Officer (DPO), under art. 41 of the LGPD: Franz Kunz — [email protected].
14. International transfer of data
- Depending on the service, your data is processed by suppliers in Brazil, the European Union and the United States — the breakdown by service is in the Privacy Policy. Brazil and the European Union mutually recognise each other as adequate, which allows data to flow between them.
- AI processing takes place in the European Union (Microsoft Azure OpenAI, in Sweden). Further details in the Privacy Policy.
15. Deletion of account and data
- Inside the app: there is an option to delete your account and your data.
- Via the web: you can also request deletion by e-mail at [email protected], without having to reinstall the app.
- After the request, we delete the data within the statutory time limits, except for information that the law requires us to retain. Deleting the account ends your access to YOLKI's features.
Having an ongoing Duo subscription does not prevent the deletion of your account: your right to erasure remains fully available. But deleting the account does not cancel the subscription — it was taken out with the app store and, for as long as automatic renewal is not cancelled there, the store will keep charging you.
To stop the charges, cancel the subscription in the subscription settings of your Apple (App Store) or Google (Google Play) account. We recommend cancelling before deleting the account.
16. App stores (Apple and Google)
- Use of the app must comply with the rules of the App Store (Apple) and Google Play (Google).
- These Terms are entered into between you and Coflint — not with Apple or Google. Apple and Google are not responsible for the app or its content.
- Maintenance and support for YOLKI are provided by Coflint, through [email protected]. Apple has no obligation whatsoever to furnish maintenance or support in relation to the app.
- Complaints relating to the app — including as to product liability, legal or regulatory compliance and consumer rights — must be directed to Coflint, not to Apple. If the app fails in a way that entitles you to a refund of a purchase made in the App Store, Apple may refund the price paid; Apple has no other warranty obligations in respect of the app.
- If a third party alleges that the app infringes intellectual property rights, responsibility for investigating, defending and resolving the allegation lies with Coflint, not with Apple.
- You represent that you are not located in a country subject to a U.S. government embargo, nor listed on any U.S. government list of restricted or prohibited parties.
- Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them to the extent applicable to them. To the extent relevant, the store's standard end-user licence agreement (EULA) prevails over these Terms.
17. Limitation of liability
Technical responsibility for the veterinary act lies with the partner veterinarian/clinic; failures of third-party infrastructure (video call, cloud, payment method) are the responsibility of the respective providers.
Towards you, as a consumer, under arts. 7º, sole paragraph, and 25, §1º, of the CDC, the members of the supply chain are jointly and severally liable; Coflint does not exempt itself from that joint and several liability, without prejudice to its right of recourse against the party directly responsible. In any event, Coflint is liable for failures in the operation of the platform it runs, under art. 14 of the CDC.
The AI and the ancillary features are informational in nature, and Coflint does not guarantee any results from them. Nothing in this clause sets aside the mandatory rules of the CDC or liabilities that the law does not allow to be limited.
18. Consumer service
- Support and complaints: [email protected].
- We respond to requests in clear, accessible language, within the time limits set out in the CDC.
19. Governing law and jurisdiction
These Terms are governed by the law of Estonia/the European Union. The public policy rules of the CDC and of Brazilian consumer protection legislation are reserved and prevail whenever they are applicable and more protective of the Brazilian consumer.
For the Brazilian consumer, the courts of their own domicile are the elected forum. We do not impose a foreign jurisdiction.
20. Effective date and version
- Effective date of this version: October 10, 2026. Version: 1.10.
- First version in force since: April 19, 2026.
21. Intellectual property
- The YOLKI brand, the software, the design and the app's content belong to Coflint (or are licensed to it).
- It is prohibited to copy, reproduce, modify, distribute, decompile, reverse engineer or exploit these elements without authorisation, except in the cases expressly permitted by law.
22. Conduct and acceptable use
It is prohibited to:
- use the app for unlawful, fraudulent or abusive purposes;
- attempt to compromise the security, integrity or operation of the app;
- submit offensive or unlawful content, or content that infringes third-party rights;
- use bots, scripts or other automated means to access the app, extract data (scraping) or overload the platform;
- use the AI assistant to generate or spread unlawful, offensive or misleading content;
- access areas, data or systems without authorisation.
We may remove content that breaches this section — for example, an inappropriate profile photo, including after a report by a veterinarian.
You are responsible for the truthfulness and currency of the information you provide in the app — the guidance and content are based on what you tell us about yourself and about your pet.
23. Suspension and termination by Coflint
- Coflint may suspend or terminate access, in whole or in part, in the event of breach of these Terms, use by a person under 18, fraud or a security risk.
- Where possible and appropriate, we will inform you of the measure.
- Ongoing subscription: in the event of suspension or termination for a proven breach, there is no pro-rata refund of the period already paid for, and Coflint makes no new charges from the measure onwards, ceasing to make the paid features available. This does not set aside the right of withdrawal in section 9 or the mandatory rules of the CDC.
- The subscription was taken out with the app store, and only you can cancel it — in the subscription settings of your Apple (App Store) or Google (Google Play) account. Coflint cannot cancel it on your behalf: for as long as automatic renewal is not cancelled in the store, the store will keep charging.
24. Changes to these Terms
- Coflint may amend these Terms, indicating a new version and a new date; material changes will be notified to you by appropriate means (for example, in the app itself).
- For changes that reduce your rights or increase your obligations, we will ask for your renewed acceptance; you may refuse and close your account at no cost. For neutral changes or improvements, continued use after the notification means agreement.
25. Infrastructure and sub-processors
- We use technology partners to operate the app, with cloud hosting in Brazil, the European Union and the United States, depending on the service.
- The full list of processors and sub-processors is described in the Privacy Policy.
26. Availability and warranties
Coflint endeavours to keep YOLKI working, but, as this is a service provided over the internet and dependent on third parties — app stores, infrastructure providers and connectivity providers —, it does not guarantee uninterrupted availability or the absence of maintenance and interruptions caused by factors beyond its control. Coflint is not liable for acts of God or force majeure (art. 393 of the Código Civil — the Brazilian Civil Code).
This does not set aside the statutory warranty of adequacy of the service provided for in art. 24 of the CDC, nor liability for defects and faults in the platform.
27. Pet social network (future feature)
- We are planning a pet social network. This feature is not available yet; on launch, we will communicate the specific terms applicable to it.
28. General provisions
- Severability: if any clause is held invalid, the remaining ones remain valid.
- Assignment: Coflint may assign the rights and obligations under these Terms to third parties, without prejudice to your rights as a consumer; in that case, we will notify you, and you may close your account at no cost.
- Communications: we may communicate with you through the app, by e-mail or through other indicated channels.
- Language: for the Brazilian consumer, the Portuguese version prevails over translations.