Privacy Policy
Last Updated: December 30, 2025
1. Introduction
Tailwind Engineering LLC ("we," "us," or "our") operates the Asr mobile application (the "App"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our App.
By using Asr, you agree to the collection and use of information in accordance with this policy. If you do not agree with this policy, please do not use the App.
2. Information We Collect
2.1 Information You Provide
Account Information
Email address (required for email/password authentication)
Display name (optional)
Profile photo (optional)
Prayer Data
Prayer records and completion status
Prayer tracking history and timestamps
Recording method (manual or NFC)
Preferences and Settings
App theme and appearance preferences
Notification preferences and schedules
Prayer time calculation preferences
App blocking configuration
2.2 Information Collected Automatically
Location Data
We collect precise GPS coordinates (latitude/longitude) to calculate accurate Islamic prayer times for your location. We also collect your location name (city, region) obtained via reverse geocoding and timezone information derived from your location.
You control location access through your device settings. You may also manually set your location within the App.
Device Information
Device type and operating system version
Device identifier (iOS Vendor ID or Android ID)
App version
Usage Data
App interactions (screens viewed, features used)
Prayer tracking patterns and statistics
Session duration and frequency
Diagnostic Data
Crash reports and error logs
Performance metrics (launch time, responsiveness)
Push Notification Data
Firebase Cloud Messaging (FCM) tokens
Live Activity tokens (iOS)
Notification delivery status
2.3 Information from Third-Party Services
Authentication Services
If you sign in with Apple, we receive your name and email address (as you choose to share). If you sign in with Google, we receive your name, email address, and profile photo.
Subscription Services
We receive purchase and subscription status from the App Store or Google Play via RevenueCat.
3. How We Use Your Information
We use your information to:
Provide Core Functionality: Calculate accurate prayer times based on your location, track your prayer history, and deliver timely notifications
Personalize Your Experience: Apply your theme preferences, notification settings, and display preferences
Process Subscriptions: Manage your subscription status and provide access to premium features
Send Notifications: Deliver prayer reminders, morning briefs, and important service updates
Improve the App: Analyze usage patterns, identify bugs, and optimize performance
Provide Support: Respond to your inquiries and resolve issues
Ensure Security: Detect and prevent fraud, abuse, or unauthorized access
Comply with Law: Meet legal obligations and respond to lawful requests
4. Third-Party Services
We use the following third-party services to operate the App:
Firebase Authentication (Google LLC): Used for user account management. We share email, name, and authentication credentials.
Firebase Firestore (Google LLC): Used for data storage. We share prayer data, preferences, and account information.
Firebase Analytics (Google LLC): Used for usage analytics. We share user ID, app interactions, and device information.
Firebase Crashlytics (Google LLC): Used for crash reporting. We share user ID, crash logs, and device information.
Firebase Cloud Messaging (Google LLC): Used for push notifications. We share device tokens.
RevenueCat (RevenueCat Inc.): Used for subscription management. We share user ID and purchase status.
Apple Sign-In (Apple Inc.): Used for authentication. Name and email are shared based on your choices.
Google Sign-In (Google LLC): Used for authentication. We receive name, email, and profile photo.
These providers process data on our behalf under contractual obligations to protect your information. For details on their practices, please review:
Google Privacy Policy: https://policies.google.com/privacy
RevenueCat Privacy Policy: https://www.revenuecat.com/privacy
Apple Privacy Policy: https://www.apple.com/legal/privacy/
5. Information Sharing and Disclosure
We do not sell, trade, or rent your personal information to third parties.
We may share your information only in these circumstances:
Service Providers: With trusted third-party providers who assist in operating the App (as listed in Section 4), bound by contractual obligations to protect your data.
Legal Requirements: When required by law, court order, subpoena, or government regulation, or to protect our rights, property, safety, or that of our users.
Business Transfers: In connection with a merger, acquisition, bankruptcy, or sale of assets, your information may be transferred to the successor entity.
With Your Consent: For any purpose not described here, only with your explicit consent.
6. Data Security
We implement appropriate technical and organizational measures to protect your information, including:
Encryption of data in transit (TLS/SSL)
Secure authentication mechanisms
Access controls limiting employee access to personal data
Regular security assessments
Secure cloud infrastructure (Google Cloud Platform)
However, no method of electronic transmission or storage is completely secure. While we strive to protect your information, we cannot guarantee absolute security.
7. Data Retention
We retain your information as follows:
Account information: Retained until you delete your account.
Prayer history: Retained until you delete your account.
Preferences: Retained until you delete your account.
Usage analytics: Retained for up to 26 months.
Crash reports: Retained for up to 90 days.
When you delete your account, we will delete or anonymize your personal information within 30 days, except where retention is required by law.
8. Your Rights and Choices
All Users
You have the right to:
Access: Review the personal information we hold about you
Correction: Update or correct inaccurate information
Deletion: Delete your account and associated data
To exercise these rights:
Delete your account: Settings > Account > Delete Account
Manage location access: Your device settings
Manage notifications: Settings > Notifications
Other requests: Email us at tailwindengineering@gmail.com
European Users (GDPR)
If you are in the European Economic Area, you have additional rights including:
Right to restrict processing
Right to object to processing
Right to lodge a complaint with a supervisory authority
Our legal bases for processing include: contract performance, legitimate interests, consent, and legal obligations.
California Residents (CCPA/CPRA)
You have the right to:
Know what personal information is collected and how it's used
Delete your personal information
Opt out of the sale or sharing of personal information
Non-discrimination for exercising your rights
We do not sell or share personal information as defined under the CCPA/CPRA.
To submit a request, email tailwindengineering@gmail.com. We will verify your identity before processing requests.
9. Children's Privacy
Asr is not intended for children under 13 years of age (or 16 in the EEA). We do not knowingly collect personal information from children under these ages. If you believe we have inadvertently collected such information, please contact us immediately at tailwindengineering@gmail.com, and we will promptly delete it.
10. International Data Transfers
Your information may be transferred to and processed in the United States and other countries where our service providers operate. These countries may have different data protection laws than your country of residence.
For transfers from the EEA, UK, or Switzerland, we rely on:
Standard Contractual Clauses approved by the European Commission
Service providers' compliance with applicable data protection frameworks
11. Changes to This Policy
We may update this Privacy Policy periodically. When we make material changes, we will:
Post the updated policy within the App
Update the "Last Updated" date
Notify you via email or in-app notification for significant changes
Your continued use of Asr after changes constitutes acceptance of the updated policy. We encourage you to review this policy periodically.
12. Contact Us
If you have questions, concerns, or requests regarding this Privacy Policy or our privacy practices:
Email: tailwindengineering@gmail.com
Phone: (414) 375-5248