Legal
Privacy Policy
Last updated: November 1, 2026
LUN is a women's health and fitness app that syncs training, nutrition, and wellbeing with your menstrual cycle. Because that means handling sensitive health information, this policy explains in plain terms what we collect, why, who we share it with, and the control you have over it.
Who we are
LUN is operated by LUN TECNOLOGIA LTDA (CNPJ 66.829.299/0001-08), located at R. 4 de Junho, 450 — Centro, Porangaba/SP — CEP 18260-005. For any privacy question, contact us at contato@heylun.app.
Information we collect
We collect only what the app needs to work for you:
- Account data: your name, email address, and date of birth.
- Health & cycle data: menstrual cycle dates, phase, symptoms, mood, and journal entries you choose to log.
- Fitness data: workouts, hydration, and — if you provide them — weight and height.
- AI coach conversations: the messages you send to the in-app AI coach, along with limited context (such as your current cycle phase and goal) used to tailor its responses.
- Subscription data: your purchase and subscription history, handled through the App Store and RevenueCat. We never receive or store your full payment card details.
How we use your information
We use your data to:
- generate and adapt your workouts, nutrition guidance, and recovery notes;
- place you in your cycle and personalize the experience to your phase;
- power the AI coach so it can answer with your context in mind;
- manage your subscription, free trial, and account;
- keep the app secure and fix problems.
We do not sell your personal data, and we do not use your health data for advertising. LUN has no ads.
Who we share it with
We share data only with the service providers that make LUN run. Each is bound to protect it and use it only to provide their service to us:
- Supabase — Database, authentication, and backend infrastructure. Privacy policy
- Anthropic — Powers the in-app AI coach (processes your chat messages). Privacy policy
- RevenueCat — Subscription management and purchase history. Privacy policy
- Apple — App distribution and payment processing (App Store). Privacy policy
We may also disclose information if required by law, or to protect the rights and safety of our users and the public.
Your AI coach conversations
When you message the AI coach, your text and limited context are sent to Anthropic to generate a reply, then returned to you. The AI coach provides educational wellness information only. It does not diagnose, treat, or replace professional medical care.
Your rights and choices
You are always in control of your data. From within the app you can:
- access and review the information you have provided;
- correct or update it;
- export your data;
- permanently delete your account and all associated data.
To exercise any of these rights, use the in-app controls or email us at contato@heylun.app. Depending on where you live, you may have additional rights under laws such as Brazil's LGPD or California's CCPA/CPRA, including the right to know, delete, and opt out of the sale of personal information — and LUN does not sell personal information.
Data retention
We keep your data for as long as your account is active. When you delete your account, we delete your personal data from our active systems, except where we are required to keep certain records to comply with legal obligations.
Data security
Your data is transmitted over encrypted connections and stored with our infrastructure provider under access controls. No method of transmission or storage is completely secure, but we take reasonable measures to protect your information.
Age requirement
LUN is intended for adults aged 18 and over. We do not knowingly collect data from anyone under 18. If you believe someone under that age has created an account, contact us and we will remove it.
Changes to this policy
We may update this policy as LUN evolves. When we make material changes, we will update the date at the top and, where appropriate, notify you in the app.