# Privacy Policy for Calculator Pro
**Last Updated: March 25, 2026**
AppsBird ("we," "our," or "us") operates the Calculator Pro mobile application (the "App"). This page informs you of our policies regarding the collection, use, and disclosure of personal data when you use our App and the choices you have associated with that data.
## 1. Information Collection and Use
We collect and process certain information to provide and improve our App. All data is handled securely and in accordance with applicable privacy laws.
### 1.1 Types of Data Collected
#### Usage Data
We may collect information on how the App is accessed and used. This may include information such as your device's Internet Protocol address (e.g., IP address), device type, operating system version, app configuration, time and date of your use of the App, and other diagnostic data.
#### Voice Input
Voice inputs are processed through Google Speech Recognition (Android) or Apple Speech (iOS) depending on your platform. This audio data is transmitted to these services only to convert speech to text within the App. We do not store or retain your voice recordings. The voice data is processed in real-time and discarded immediately after conversion.
#### AI Math Solving
When you use the AI Math Solver feature, your mathematical queries are sent to our secure backend servers powered by Google's Generative AI. These requests are anonymous and are used only to provide answers to your queries. We do not store your math problems or associate them with your identity.
#### Device Sensors
The App uses your device's motion sensors (accelerometer) to detect shake gestures for clearing the calculator display. This sensor data is processed entirely on your device and is never transmitted or stored.
### 1.2 Account Information (Optional)
If you choose to sign in with Google to access premium features and sync your data across devices, we collect:
- **Email Address:** Used for account identification and authentication
- **Display Name:** Used for personalization within the App
- **Profile Photo:** Used for account display in the App
- **User ID:** An anonymous identifier provided by Firebase Authentication for cloud synchronization
**You are not required to sign in to use the basic features of the App.** Signing in is optional and only necessary for premium features and cross-device synchronization.
### 1.3 Cloud Data Storage
For users who sign in with Google, the following data is stored securely in Google Cloud Firestore:
- **User Preferences:** Your chosen theme, color scheme, and app settings
- **Referral Data:** Your unique referral code and referral relationships
- **Credits and Rewards:** Earned credits from referrals and ad-free pass usage
- **Purchase History:** Records of your premium subscriptions and in-app purchases (managed by RevenueCat)
All cloud data is encrypted in transit using HTTPS and stored securely in Google Cloud infrastructure.
### 1.4 Referral Program
Our referral program allows users to earn credits by inviting others. We collect:
- **Referral Codes:** Unique codes generated for each user
- **Credits Balance:** Number of credits earned and remaining
- **Referral Relationships:** Anonymous tracking of referrer-referee connections (no personal information is shared between users)
This data is used solely to manage the referral program and reward users with ad-free passes.
### 1.5 In-App Credits and Ad-Free Passes
We track:
- **Ad-Free Pass Credits:** Earned through referrals or purchases
- **Usage History:** When credits are activated and their expiration dates
- **Remaining Balance:** Current available credits
## 2. Third-Party Services
We use third-party services that may collect information used to identify you:
### 2.1 Google Play Services / Apple App Store
For app distribution, updates, and in-app purchases.
### 2.2 Google Mobile Ads (AdMob)
For displaying advertisements to free users. AdMob may collect:
- Device identifiers (Advertising ID)
- IP address
- Device information
- App usage data
AdMob uses this information to show personalized ads. You can opt out of personalized advertising in your device settings.
### 2.3 RevenueCat
For managing premium subscriptions and in-app purchases. RevenueCat collects:
- Purchase history
- Subscription status
- Anonymous user identifiers
### 2.4 Firebase Services
We use multiple Firebase services:
- **Firebase Authentication:** For secure Google Sign-In
- **Cloud Firestore:** For storing user preferences and data
- **Firebase Analytics:** For understanding app usage patterns and improving performance
- **Firebase Crashlytics:** For crash reporting and stability improvements. When a crash occur, Crashlytics collects non-personally identifiable information such as device state, unique device identifiers, hardware model, operating system version, and stack traces. This data is used solely for debugging and is not shared with third parties for tracking. For more information, please review the [Google Privacy Policy](https://policies.google.com/privacy).
- **Firebase Remote Config:** For delivering app configuration updates
Firebase may collect device information, app usage data, and crash logs.
### 2.5 Google Generative AI
For AI-powered math problem solving. Queries are sent anonymously and are not stored or associated with your identity.
## 3. How We Use Your Data
We use the collected data for the following purposes:
- **To provide and maintain the App:** Ensuring core functionality works correctly
- **To provide premium features:** Syncing data across devices for signed-in users
- **To manage subscriptions:** Processing and validating premium purchases
- **To improve the App:** Analyzing usage patterns and fixing bugs
- **To provide customer support:** Responding to your inquiries and issues
- **To manage the referral program:** Tracking and rewarding successful referrals
- **To display advertisements:** Showing relevant ads to free users (can be removed with premium subscription)
## 4. Data Sharing and Disclosure
We do not sell, trade, or rent your personal information to third parties. We may share your data only in the following circumstances:
- **With service providers:** Third-party companies that help us operate the App (Google, RevenueCat, AdMob)
- **For legal compliance:** If required by law or to protect our rights
- **With your consent:** When you explicitly authorize us to share your information
## 5. Data Retention
- **Account Data:** Retained as long as your account is active. Deleted within 30 days of account deletion.
- **Usage Analytics:** Retained for up to 2 years for improvement purposes
- **Crash Logs:** Retained for up to 90 days
- **Voice Input:** Not stored; processed in real-time and immediately discarded
- **Referral Data:** Retained as long as your account is active
## 6. Your Data Rights
You have the right to:
- **Access your data:** Request a copy of the data we hold about you
- **Correct your data:** Update inaccurate or incomplete information
- **Delete your data:** Request deletion of your account and associated data through the app settings
- **Opt-out of personalized ads:** Disable ad personalization in your device settings
- **Withdraw consent:** Stop using features that require data collection
### Account Deletion
You can delete your account at any time by:
1. Opening the App
2. Going to Settings
3. Selecting "Delete Account"
4. Confirming your choice
Upon deletion, all your personal data will be permanently removed from our servers within 30 days.
## 7. Data Security
The security of your data is important to us. We implement industry-standard security measures including:
- **Encryption in transit:** All data transmitted between your device and our servers uses HTTPS
- **Encryption at rest:** Cloud data is encrypted in Google Cloud infrastructure
- **Access controls:** Limited access to personal data by authorized personnel only
- **Regular security audits:** Ongoing monitoring and improvement of security practices
However, no method of transmission over the Internet or electronic storage is 100% secure. While we strive to use commercially acceptable means to protect your data, we cannot guarantee its absolute security.
## 8. Children's Privacy
Our App does not address anyone under the age of 13. We do not knowingly collect personally identifiable information from children under 13. If you are a parent or guardian and you are aware that your child has provided us with personal data, please contact us. If we become aware that we have collected personal data from children without verification of parental consent, we take steps to remove that information from our servers.
## 9. International Data Transfers
Your information may be transferred to and maintained on servers located outside of your state, province, country, or other governmental jurisdiction where data protection laws may differ. By using the App, you consent to such transfers.
## 10. Changes to This Privacy Policy
We may update our Privacy Policy from time to time. We will notify you of any changes by:
- Posting the new Privacy Policy on this page
- Updating the "Last Updated" date
- Notifying you via the App (for material changes)
You are advised to review this Privacy Policy periodically for any changes. Changes to this Privacy Policy are effective when they are posted on this page.
## 11. Contact Us
If you have any questions about this Privacy Policy, please contact us:
- **By email:** Toolsbird95@gmail.com
- **By visiting our website:** https://sites.google.com/view/calculatorprolegal/privacy-policy
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**Your privacy matters to us. Thank you for trusting Calculator Pro.**