Privacy Policy
Your data belongs to you. Learn how we collect, use, and protect your information.
Last Updated: January 2, 2026
Introduction
Welcome to Nudge4u ("we," "our," or "us"). We are committed to protecting your privacy and ensuring you have a positive experience using our habit-building application. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use the Nudge4u mobile application (the "App").
Please read this Privacy Policy carefully. By using the App, you agree to the collection and use of information in accordance with this policy. If you do not agree with the terms of this Privacy Policy, please do not access the App.
Information We Collect
Personal Information You Provide
When you use Nudge4u, we may collect information that you provide directly to us, including:
Account Information: When you sign in using Apple ID or Google Sign-In, we receive your email address, display name (if provided), and a unique user identifier.
Habit Data: Information about the habits you create, including goals, schedules, workflow steps, and target times.
Session Logs: Records of your habit completion sessions, including dates, durations, and any notes you add.
Behavioral Profile: Your preferences determined during the calibration process (archetype, chronotype, blockers, triggers).
Biography/Narrative: Any personal narrative or story you add or edit within the app.
Friend Accountability Data: If you choose to use the Friend Accountability feature, we store invitation data, shared habit links, and partner connections that you explicitly create.
Information Collected Automatically
When you use the App, we may automatically collect certain information, including:
Device Information: Device type, operating system version, and unique device identifiers.
Usage Data: Features used, session times, and interaction patterns (only if you opt-in to analytics).
Health Data (Optional): With your explicit permission, we may access sleep and energy data from HealthKit to provide personalized insights. This data is processed locally on your device and is never transmitted to our servers.
How We Use Your Information
We use the information we collect to:
- 1
Provide and Maintain the App: To operate the core functionality of habit tracking, AI-powered nudges, and personalized coaching.
- 2
Personalize Your Experience: To tailor AI recommendations, workflow suggestions, and timing based on your behavioral profile and history.
- 3
Send Notifications: To deliver scheduled reminders and nudges you have configured for your habits.
- 4
Improve Our Services: To understand how users interact with the App and identify areas for improvement (only if you opt-in to analytics).
- 5
Provide Customer Support: To respond to your inquiries and resolve issues.
- 6
Process Subscriptions: To manage your Nudge4u Pro subscription through Apple's StoreKit.
- 7
Enable Friend Accountability: To facilitate mutual accountability between you and your chosen partners by sharing limited habit data (see below).
Data Storage and Security
Your data is stored securely using Google Firebase services, including:
Firebase Authentication: For secure account management.
Cloud Firestore: For storing your habits, logs, and profile data. Data is stored in Google Cloud infrastructure.
Vertex AI (Firebase AI Logic): For processing AI-powered features. AI prompts are processed via Google's global infrastructure. Your data is NOT used to train Google's AI models. Processing is governed by Google's Data Processing Addendum (DPA) and Standard Contractual Clauses (SCCs) to ensure GDPR-compliant international data transfers.
We implement industry-standard security measures to protect your data, including encryption in transit (TLS) and at rest. However, no method of transmission over the internet or electronic storage is 100% secure.
Third-Party Services
We use the following third-party services:
| Service | Purpose | Data Shared |
|---|---|---|
| Firebase (Google) | Authentication, Database, AI | Account data, Habits, Logs |
| PostHog | Analytics (opt-in only) | Anonymized usage events |
| Apple StoreKit | Subscription Management | Transaction IDs (no PII) |
| RevenueCat | Subscription Management | Transaction IDs, User ID |
Each third-party service is governed by its own privacy policy. We encourage you to review their policies.
Your Rights Under GDPR and CCPA
Depending on your location, you may have the following rights:
Right to Access
You can request a copy of all personal data we hold about you. Use the "Export My Data" feature in the App's Profile settings.
Right to Rectification
You can update your personal information at any time within the App (e.g., display name, biography).
Right to Erasure ("Right to be Forgotten")
You can permanently delete your account and all associated data using the "Delete Account" feature in the App's Profile settings. This action is irreversible.
Right to Data Portability
You can export your data in a machine-readable JSON format using the "Export My Data" feature.
Right to Object
You can opt out of analytics tracking at any time using the toggle in the App's Privacy settings.
Right to Restrict Processing
You may request that we limit how we use your data by contacting us directly.
To exercise any of these rights beyond what is available in-app, please contact us at privacy@nudge4u.com.
Data Retention
We retain your personal data for as long as your account is active or as needed to provide you services. If you delete your account, we will delete all your data from our systems within 30 days, except where we are required to retain data for legal or compliance purposes.
Children's Privacy
Nudge4u is not intended for use by children under the age of 13 (or 16 in the EEA). We do not knowingly collect personal information from children. If you are a parent or guardian and believe your child has provided us with personal information, please contact us immediately.
Analytics and Tracking
Nudge4u uses PostHog for analytics to understand app usage patterns. Analytics is disabled by default (privacy-first approach). You must explicitly opt-in via the toggle in the App's Privacy settings if you wish to help us improve the app.
When analytics is enabled, we collect:
Anonymized event data (e.g., "habit_created", "habit_completed")
No personally identifiable information (PII) is sent
No session recordings are ever captured
We do not use advertising-related tracking or share your data with advertisers.
Friend Accountability Feature
What It Is
The Friend Accountability feature allows you to invite a friend to share a habit with you. When you connect, you can see each other's progress (completion status and streaks) to stay motivated together.
Data Shared with Partners
When you accept or send a friend accountability invitation, the following data becomes visible to your partner:
| Data Shared | Purpose |
|---|---|
| Display Name | Identify you to your partner |
| Habit Name | Show which habit you're doing together |
| Current Streak | Mutual motivation |
| Last Completion Date | See if partner completed today |
Important: Your partner can only see the specific habit you chose to share. They cannot see your other habits, personal logs or notes, behavioral profile, or biography and any other account data.
Consent and Control
Explicit Consent: Sharing only happens when you explicitly accept an invitation or your partner accepts yours. No data is shared without this mutual agreement.
Revoke Access Anytime: You can unlink from your partner at any time using the "Unlink Partner" feature. This immediately revokes their access to your shared habit data.
Invitation Expiry: Invitations expire after 48 hours if not accepted.
Technical Security
Partner data access is enforced at the database level using Firebase Security Rules
Partners can only read (not modify) your habit data
All operations are authenticated and validated server-side
International Data Transfers
If you are accessing the App from outside the United States, please be aware that your data may be transferred to, stored, and processed in the United States where our servers are located. By using the App, you consent to this transfer.
For users in the European Economic Area (EEA), we rely on Standard Contractual Clauses approved by the European Commission to ensure adequate protection for your data.
Changes to This Privacy Policy
We may update this Privacy Policy from time to time. We will notify you of any material changes by:
Posting the new Privacy Policy on this page with an updated "Last Updated" date.
Sending you a notification within the App (for significant changes).
We encourage you to review this Privacy Policy periodically for any changes.
Contact Us
If you have any questions or concerns about this Privacy Policy or our data practices, please contact us at:
Address:
Nimblocity AI Labs LLP
12-116/1, Godamula Veedhi
Karamchedu, Andhra Pradesh 523168
India
Summary for Users
| What We Collect | Why | Your Control |
|---|---|---|
| Email, Name | Account creation | View in Profile |
| Habits, Logs | Core app functionality | Delete via Account Deletion |
| Behavioral Profile | Personalization | Edit in Calibration |
| Usage Events | Improve the app | Opt-out in Privacy Settings |
| HealthKit Data | Energy/Sleep insights | iOS Permissions |
| Partner Connections | Friend Accountability | Unlink anytime in Habit Details |
Your data belongs to you.
You can export it or delete it at any time.