Last updated: April 28, 2026
Nille is an app that helps parents and caregivers track their baby's daily activities — feedings, sleep, diaper changes, growth, health events, memos, and more. This policy explains what data we collect, how we store it, and who we share it with.
Nille is intended for use by parents, legal guardians, and authorized caregivers who are 18 years of age or older.
Account Information: When you create an account, we collect your email address, display name, and a securely hashed password. If you sign in with Apple or Google, we receive a unique identifier and, if you consent, your name and email.
Baby Data: Information you voluntarily enter about your baby, including name, birth date, gender, feedings, sleep sessions, diaper changes, growth measurements, health events, medications, memos, milestones, and uploaded documents.
Photos and Documents: Profile photos, memo photos, and medical documents you choose to upload are stored securely in our cloud storage.
Device Information: We collect device identifiers, device tokens (for push notifications), platform information, and basic usage analytics to operate and improve the app.
Subscription Information: If you purchase a premium subscription, purchase state and entitlement information is managed through the app store (Apple or Google) and RevenueCat.
Nille includes an optional baby-registry / wishlist feature. When you create a wishlist and toggle it to Public, we generate a unique share link (a long random token in the URL). Anyone with that link can view the wishlist contents — including your baby's display name, your message to gift-givers, and the items you've added — without needing a Nille account or any authentication. Treat the share link the way you would treat a password: only send it to people you intend to share with. You can switch the wishlist back to Private at any time, which immediately invalidates the public view.
The Nille app includes an AI assistant powered by Google Gemini that helps you log activities through natural language and answer questions about your baby's data. When you use this feature:
You can use Nille without the AI features — all manual tracking functions work independently.
Your data is stored using industry-standard security practices:
While we take reasonable measures to protect your data, no method of transmission or storage is 100% secure. We encourage you to use a strong, unique password and keep your account credentials confidential.
We use the following trusted service providers to operate Nille. Each processes data only as necessary to deliver their specific service and is bound by their own privacy commitments:
We do not sell, trade, or rent your personal information to third parties. We only share data with the providers listed above as required to operate the service, or when legally required (see Section 7).
We may disclose your information if required by law, subpoena, or valid legal process, or where we believe in good faith that disclosure is necessary to protect the rights, property, or safety of Nille, our users, or the public.
You have the right to:
To exercise any of these rights, contact us at the addresses in Section 12.
Where the General Data Protection Regulation applies to you (you are in the EU, UK, or another GDPR-aligned jurisdiction), we process your personal data on the following lawful bases:
If you are in California, our processing of your information is conducted under the comparable bases described in the CCPA (Section 14 below).
Nille is designed for adult parents, legal guardians, and authorized caregivers (18 or older) to track information about their babies and young children. We do not direct our services to children, and we do not knowingly collect personal information directly from children under 13.
All baby-related data in Nille is entered by the authorized adult account holder, who is responsible for that data. Babies and children do not create accounts, use the app directly, or interact with our services.
If you believe a child under 13 has independently created an account or provided personal information to Nille, please contact us at support@nille.app and we will promptly delete the information.
We retain your account and baby data for as long as your account is active. When you delete your account, your personal data and baby tracking records are removed from our active systems immediately. Encrypted backups containing those records are purged on a rolling 30-day cycle, after which the data is fully unrecoverable. We may retain a limited record of your subscription history where legally required for tax or accounting purposes.
Nille operates globally, and your data may be processed in countries other than your own. The processors and storage locations we rely on are:
For transfers from the European Economic Area, the United Kingdom, or Switzerland to processors located in the United States, we rely on one of the following safeguards required by the GDPR (Articles 44-49):
You can request a copy of the relevant transfer mechanism documentation by contacting us at support@nille.app.
If you have questions about this privacy policy or want to exercise any of your rights, please contact us:
General privacy inquiries: support@nille.app
Account or data deletion requests: support@nille.app
We may update this privacy policy from time to time to reflect changes in our practices or for legal, operational, or regulatory reasons. When we make material changes, we will notify you through the app, by email, or by updating the "Last updated" date at the top of this page. We encourage you to review this policy periodically.
This privacy policy is designed to comply with: