1. Agreement
By creating an account or using the Vello mobile app ("Vello") you agree to these Terms. If you don't agree, don't use Vello. Vello is operated by Sentium Ltd (company number 16512683), registered in England and Wales.
2. What Vello is — and is not
Vello is a wellness and education tool. It helps you log, organise, and reflect on your own health data, and offers AI-generated discussion prompts you can take to your clinician.
Vello is not a medical device. It does not diagnose, treat, cure, or prevent any disease. It is not a replacement for professional medical advice, diagnosis, or treatment. Never delay seeking medical advice because of something Vello has shown you.
If you may be experiencing a medical emergency, call your local emergency services immediately (999 in the UK, 911 in the US, 112 in the EU).
3. Eligibility
Vello is intended for adults (18+) who can give informed consent to processing their own health data. You must provide a real email address and accurate information when relevant for Vello to be useful.
4. Your account
You are responsible for keeping your sign-in method secure (the email/OTP combination, and any passkey enrolled with Microsoft Entra). Notify us immediately if you suspect unauthorised access.
5. Acceptable use
Don't use Vello to:
- Upload data belonging to anyone other than yourself.
- Reverse-engineer, scrape, or attempt to extract our underlying AI models.
- Send abusive, illegal, or rights-infringing content via the Care AI.
- Bypass authentication, rate limits, or other technical protections.
6. AI-generated content
Care AI responses are generated by a language model (Azure OpenAI gpt-4o-mini) given the context you provide. The model can produce plausible-sounding but incorrect statements. Treat every response as a starting point for conversation with a qualified clinician — never as a definitive assessment.
7. Data and privacy
Use of Vello is governed by our Privacy Policy. In short: your data lives in Azure UK South, is encrypted at rest and in transit, is never sold, and can be deleted by you at any time from Settings.
8. Subscriptions and pricing
Vello is currently free during early access. If we introduce paid features in future, you will be notified in-app and never charged without explicit consent.
9. Disclaimers and limits of liability
Vello is provided "as is". To the maximum extent permitted by law, Sentium Ltd disclaims all warranties, express or implied. We are not liable for any health outcomes, decisions, or harms resulting from acting on (or failing to act on) information surfaced by Vello.
Nothing in these terms limits our liability for death or personal injury caused by negligence, fraud, or any other liability that cannot be excluded under English law.
10. Termination
You can end the agreement any time by deleting your account in Settings. We may suspend or terminate access for serious or repeated breaches of these Terms (notice given where reasonable).
11. Governing law
These Terms are governed by the laws of England and Wales. Disputes are subject to the exclusive jurisdiction of the English courts.
12. Contact
support@sentium.app
Sentium Ltd · London E17 3NU · United Kingdom · Company no. 16512683