Privacy Policy

CallMinder (Contacto)

Last Updated: February 6, 2026
Version: 2.0 (Default Dialer Update)

Introduction

CallMinder ("we," "our," or "the app") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application.

By using CallMinder, you agree to the collection and use of information in accordance with this policy. If you do not agree with our policies and practices, please do not use the app.

1. Information We Collect

1.1 Call Information

When you use CallMinder, we access and process the following call-related data:

• Phone Numbers: Numbers you call, receive calls from, or have in your call history (incoming, outgoing, missed, rejected, blocked)
• Call Duration: Length of each call in seconds
• Call Timestamps: Date and time when calls occurred
• Call Type: Classification of calls (incoming, outgoing, missed, voicemail, rejected, blocked, answered externally)
• SIM Card Information: Which SIM card was used for each call (for multi-SIM devices)

1.2 Contact Information

To enhance your calling experience, CallMinder accesses:

• Contact Names: Display names from your device address book
• Phone Numbers: Associated phone numbers for each contact
• Contact Photos: Photo URIs (references to photos, not the actual photo data)
• Contact IDs: Internal identifiers used by Android

Scope: The app reads all device contacts and maintains an in-memory cache of up to 1,000 contacts for quick lookup.

1.3 SMS Messages

When you use the quick reply feature during calls:

• Outgoing SMS: We send SMS messages on your behalf
• Message Content: Only predefined template messages (e.g., "Can't talk right now. I'll call you back," "I'm in a meeting")
• Recipient Numbers: Phone numbers you choose to send quick replies to

User Control: You must grant SMS permission and manually select when to send messages. We do not read or access your incoming SMS messages.

1.4 Device & Technical Information

Google Advertising ID

We collect your Google Advertising ID as required by our analytics SDK dependencies for app performance monitoring and crash reporting. We do not use this identifier for serving advertisements or personalized marketing.

Audio Settings

• Device ringtone preferences
• System audio settings (to manage call audio)
• Default ringtone URI (read-only access)

Phone State

• Real-time phone call state (ringing, active, idle)
• Phone account IDs (for SIM detection)

1.5 Error Tracking & Analytics Data (Sentry)

Automatically Collected Data:

• IP Addresses: Your device's IP address is automatically logged when errors are reported
• Device Information: Model, OS version, app version, device identifiers
• Error Logs: Stack traces and error messages (may include phone numbers or contact names if visible during the error)
• Crash Reports: Technical details about app crashes

Session Recordings:

We record user interactions in the following scenarios:

• 10% of normal app sessions (randomly selected)
• 100% of sessions where errors occur

Session recordings may capture:

• Screen taps, gestures, and navigation patterns
• Visual content displayed on screen (may include phone numbers, contact names, and call history)
• User interaction timing and patterns

2. How We Use Your Information

Call & Contact Management

• Display contact names with incoming and outgoing calls
• Enable T9 search functionality in the dialer
• Provide call history filtering, sorting, and search
• Generate call analytics and statistics
• Support features like call reminders, tags, and notes

Communication Features

• Send SMS quick replies during active calls
• Add new contacts to your address book
• Add phone numbers to existing contacts
• Manage incoming calls when app is set as default dialer
• Play custom ringtones for incoming calls

App Improvement & Error Tracking

• Monitor app performance and stability
• Debug technical issues using error logs
• Identify and fix crashes
• Improve user experience based on interaction patterns
• Respond to user feedback and feature requests

Note: Error tracking data sent to Sentry may contain phone numbers or contact names if they were visible on screen when an error occurred.

Voice Notes

• Record and store voice notes attached to calls (stored locally only)
• Note: We do not record phone calls. The RECORD_AUDIO permission is used exclusively for the voice notes feature.

3. Data Sharing & Third Parties

Sentry (Error Tracking Service)

We share limited technical and usage data with Sentry.io for error monitoring:

• Company: Sentry.io (Functional Software, Inc.)
• Server Location: Germany (o4510541538066432.ingest.de.sentry.io)
• Data Sent:
  • User IP addresses
  • Device identifiers and technical specifications
  • Error logs (may contain phone numbers or contact names)
  • Session recordings (screen interactions and visual content)
  • User feedback submitted through the app
• Purpose: Error monitoring, crash reporting, app performance improvement
• Data Retention: 90 days, then automatically deleted
• User Control: Opt-out via Settings → Privacy → Error Reporting
• Privacy Policy: https://sentry.io/privacy/
• Data Processing Agreement: GDPR-compliant DPA in place

Google Play Services

• Advertising ID: Collected via Google Play Services as required by our analytics SDK dependencies
• Purpose: App analytics and error tracking infrastructure (not for serving advertisements)
• User Control: You can reset your Advertising ID in Android Settings → Google → Ads
• Data Sharing: May be shared with Google as part of Play Services infrastructure

What We DO NOT Share

We do not sell, rent, or trade your personal information to third parties for marketing purposes.

4. Data Storage & Security

Local Storage

All core app data is stored locally on your device:

• Call logs, tags, notes, reminders: Stored using AsyncStorage (encrypted at Android OS level)
• Voice notes: Stored in device file system (private app directory)
• Contact cache: Maintained in device memory (up to 1,000 contacts, cleared when app closes)

External Data Transmission

The only data transmitted externally is error tracking and analytics data sent to Sentry.io:

• Transmission uses HTTPS encryption
• Sent to Germany-based servers (GDPR-compliant)
• Retained for 90 days, then automatically deleted
• Can be disabled via Settings → Privacy → Error Reporting

Security Measures

Technical Safeguards:

• IP Address Leak Prevention: Validates phone numbers to reject private IP address patterns (192.168.x.x, 10.x.x.x, 172.16.x.x)
• Phone Number Sanitization: Removes all special characters before initiating calls
• Emergency Call Bypass: Routes emergency numbers (911, 999, 112, etc.) directly through system dialer
• HTTPS Encryption: All external data transmission uses encrypted connections
• OS-Level Encryption: Local data storage uses Android's built-in encryption

Permission Validation:

• All sensitive permissions are requested at runtime with clear explanations
• We check permissions before accessing sensitive features
• Graceful feature degradation if permissions are denied

Read-Only Contact Access:

• We only read contact information; we never modify existing contacts
• Contact creation/editing uses Android's native contact screens (under your control)

5. Your Privacy Rights & Controls

Permission Management

You have full control over app permissions:

• Runtime Permissions: All sensitive permissions (calls, contacts, SMS, audio) are requested when first needed
• Revoke Permissions: Disable any permission in Android Settings → Apps → CallMinder → Permissions
• Granular Control: Enable only the permissions needed for features you want to use

Default Dialer Role (Optional)

Setting CallMinder as your default phone app is entirely optional:

SMS Quick Replies

• Requires SEND_SMS permission
• Only sends messages when you explicitly tap "Send"
• Uses predefined template messages (no free-form SMS sending)
• Permission can be revoked in Android settings

Error Tracking Opt-Out

You can disable error tracking and session recording:

1. Open CallMinder
2. Go to Settings → Privacy → Error Reporting
3. Toggle off "Error Reporting & Analytics"

When disabled:

• ✅ No error logs sent to Sentry
• ✅ No session recordings captured
• ✅ No IP addresses transmitted
• ⚠️ App stability monitoring disabled

Note: Disabling error tracking may make it harder for us to diagnose and fix bugs you encounter.

Data Deletion

• Local Data: Uninstalling the app permanently deletes all locally stored data (call logs, notes, tags, voice recordings)
• Sentry Data: Automatically deleted after 90 days of retention
• Request Deletion: Contact us at contactoapphelp@gmail.com to request immediate deletion of error tracking data

6. Children's Privacy

CallMinder is not directed to children under the age of 13. We do not knowingly collect personal information from children under 13.

• If we become aware that a child under 13 has provided us with personal information, we will delete such information immediately
• Parents or guardians who believe their child has provided information to us should contact us at contactoapphelp@gmail.com
• If you are under 13, please do not use CallMinder or provide any information through the app

7. International Data Transfers

Sentry Data (Germany)

Error tracking data is transmitted to Sentry.io servers located in Germany:

• Server Location: European Economic Area (EEA)
• Compliance: GDPR-compliant data processing agreements in place
• Data Protection: EU data protection standards apply
• Transfer Mechanism: Standard Contractual Clauses (SCCs) for international transfers

Google Play Services

Advertising ID and analytics data processed by Google may be transferred internationally according to Google's privacy policies:

• Google Privacy Policy: https://policies.google.com/privacy

8. Your Legal Rights

Under GDPR (European Union / EEA Users)

If you are located in the EU or EEA, you have the following rights:

• Right to Access: Request a copy of the personal data we hold about you (Sentry data only)
• Right to Rectification: Request correction of inaccurate or incomplete data
• Right to Erasure ("Right to be Forgotten"): Request deletion of your personal data
• Right to Restrict Processing: Request that we limit how we use your data
• Right to Data Portability: Request a copy of your data in a machine-readable format
• Right to Object: Object to our processing of your personal data
• Right to Withdraw Consent: Withdraw consent for data processing at any time (via Settings → Privacy → Error Reporting)

To exercise these rights, contact us at contactoapphelp@gmail.com with the subject line "GDPR Data Request."

Under CCPA (California Residents)

If you are a California resident, you have the following rights:

• Right to Know: Request information about personal data we collect, use, and disclose
• Right to Delete: Request deletion of your personal information
• Right to Opt-Out: Opt-out of the "sale" of personal information (note: we do not sell personal information)
• Right to Non-Discrimination: We will not discriminate against you for exercising your privacy rights

To exercise these rights, contact us at contactoapphelp@gmail.com with the subject line "CCPA Data Request."

For All Users

Regardless of location, you can:

• Revoke Permissions: In Android Settings → Apps → CallMinder → Permissions
• Opt-Out of Error Tracking: In Settings → Privacy → Error Reporting
• Delete Local Data: By uninstalling the app
• Reset Advertising ID: In Android Settings → Google → Ads
• Contact Us: For any privacy concerns or questions

9. Data Retention

Local Data (On Your Device)

• Call Logs, Tags, Notes, Voice Recordings: Retained until you delete them manually or uninstall the app
• Contact Cache: Cleared when app is closed (not permanently stored)

External Data (Sentry)

• Error Logs & Session Recordings: Retained for 90 days, then automatically deleted
• User Feedback: Retained for 90 days, then automatically deleted

Advertising ID

• Google Advertising ID: Processed by Google Play Services according to Google's retention policies

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, app features, or legal requirements.

How We Notify You:

• App Update Notes: Major changes will be highlighted in Google Play Store update descriptions
• In-App Notification: Significant privacy changes may trigger an in-app notice on first launch after update
• Effective Date: Always displayed at the top of this document ("Last Updated" date)

Your Acceptance:

• Continued use of CallMinder after privacy policy changes constitutes acceptance of the updated policy
• If you do not agree with changes, you should stop using the app and uninstall it

Policy Location:

• This policy is always available at: https://astromar96.github.io/contacto-privacy-policy/
• Also accessible within the app: More → Privacy Policy

11. Contact Information

12. Technical Details & Transparency

Permissions Summary

Here's a complete list of sensitive permissions CallMinder requests and why:

Permission	Purpose	When Requested
CALL_PHONE	Make phone calls directly from the app	First time you tap a number to call
ANSWER_PHONE_CALLS	Answer incoming calls programmatically	When you enable advanced call features
MANAGE_OWN_CALLS	Manage call states and display in-call UI	First call placed through app
READ_CALL_LOG	Access call history for display and analytics	App first launch
READ_PHONE_STATE	Monitor phone state changes	When dialer features are used
SEND_SMS	Send quick reply text messages	First time you use quick reply feature
READ_CONTACTS	Display contact names with phone numbers	App first launch
READ_EXTERNAL_STORAGE	Access system ringtones	First time ringtone feature is used
WRITE_EXTERNAL_STORAGE	Store voice notes	First time you record a voice note
RECORD_AUDIO	Record voice notes (NOT for call recording)	First time you record a voice note
MODIFY_AUDIO_SETTINGS	Control call audio and ringtones	During active calls
AD_ID	Access Advertising ID (for analytics SDK)	Automatically (no user prompt)

Session Recording Details

What IS Recorded:

• Button taps and gestures (location, timing)
• Screen navigation (which screens you visit)
• Visual content on screen (may include phone numbers and contact names if visible)
• App performance metrics (load times, responsiveness)

What IS NOT Recorded:

• Text you type (passwords, messages)
• Content outside the app (other apps, home screen, notifications)
• Audio from calls or voice notes
• Photos or media files
• SMS message content (except template previews)

Recording Rate:

• 10% of normal sessions (randomly selected)
• 100% of sessions where errors/crashes occur
• Can be disabled: Settings → Privacy → Error Reporting

Security & Compliance

• HTTPS Encryption: All external data transmission uses TLS 1.2 or higher
• GDPR Compliant: Data processing agreements in place with Sentry.io
• CCPA Compliant: We do not sell personal information
• COPPA Compliant: No data collection from children under 13
• Android Security: Local data encrypted at OS level (Android 6.0+)

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Privacy Policy Change Log

Version 2.0 - February 6, 2026 (Default Dialer Update)

Major Changes:

• ✅ Added default dialer role permissions and capabilities
• ✅ Disclosed Sentry error tracking with session recording (10%/100% capture rates)
• ✅ Added SMS quick reply functionality
• ✅ Disclosed Google Advertising ID collection (analytics SDK requirement)
• ✅ Added IP address leak prevention security measure
• ✅ Added user opt-out controls for error tracking
• ✅ Clarified that RECORD_AUDIO is for voice notes only (not call recording)
• ✅ Added 90-day data retention period for Sentry data
• ✅ Added SIM card information collection for multi-SIM support
• ✅ Enhanced security measures documentation

Version 1.0 - December 20, 2025

Initial Release:

• Basic call log access and display
• Contact name enrichment
• Local data storage
• Voice notes feature

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This privacy policy was generated to comply with GDPR, CCPA, COPPA, and Google Play Store requirements.
Last reviewed and updated: February 6, 2026