Nib Echo ("we", "us", or "our") is a handwriting note-taking application dedicated to providing users with a smooth and convenient experience for capturing handwritten notes.

This Privacy Policy explains how we collect, use, store, and protect your personal information when you use Nib Echo. Please read this policy carefully before using our services. If you do not agree with any part of this policy, please stop using the application.

The types of information we collect include:

(1) Information You Provide

• Notes you create and edit within the app (including handwriting strokes and text input)
• Information you submit when contacting us for support or feedback
• Personalized preferences you set (such as theme colors, pen settings)

(2) Device Information

• Device model and operating system version
• Screen resolution and orientation
• App version number
• Device identifiers (such as Android ID)

(3) Usage Information

• App launch time and usage duration
• Feature usage (such as number of notes opened, tools used)
• Crash logs and performance data

Nib Echo uses Google AdMob as our primary advertising service provider to support the continuous development and operation of the app.

Information Collected by AdMob:

• Device identifiers (for ad personalization)
• Advertising interaction records (clicks, views)
• Approximate location information (for localized ads)
• App usage behavior (for ad optimization)

How AdMob Uses Your Data:

Google AdMob uses collected information to serve personalized advertisements in accordance with its privacy policy. Google's Privacy Policy is available at:

https://policies.google.com/privacy

Advertising Identifier:

Per Google Play policy, we may collect and use the Android Advertising ID (AAID). You can reset or limit the use of this identifier in your device settings.

Information we collect is used for the following purposes:

• Service Delivery: Save your handwritten notes and ensure data is not lost
• Personalized Experience: Customize app interface and tools based on your preferences
• Ad Optimization: Display more relevant and higher-quality in-app advertisements
• Problem Diagnosis: Analyze crash logs to quickly resolve issues
• Product Improvement: Understand feature usage patterns to optimize product experience
• Legal Compliance: Comply with applicable laws and regulations

We do not sell your personal information to any third party. Exceptions include:

• Service Providers: Sharing necessary information with third parties that help us operate our business, such as cloud storage services like Firebase and crash analytics services like Firebase Crashlytics
• Advertising Partners: Sharing device identifiers and advertising IDs with Google AdMob for ad delivery
• Legal Requirements: We may provide relevant information when required by law or government authorities
• User Consent: Information sharing only after obtaining your explicit consent

We take data security seriously and implement the following measures to protect your information:

• Notes stored locally use the app's private directory, inaccessible to other applications
• Network transmission uses HTTPS encryption protocol
• Regular app updates to fix security vulnerabilities
• Strict internal access controls on data

Please note that no method of internet transmission or electronic storage is 100% secure. We will do our best to protect your data.

Depending on your jurisdiction, you may have the following rights:

• Right of Access: Learn what information we have collected about you
• Right of Rectification: Correct inaccurate personal information
• Right of Erasure: Request deletion of your personal information
• Right to Restrict Processing: Request limitations on how we use your information
• Right to Data Portability: Obtain a machine-readable copy of your data
• Right to Object: Object to our use of your information for direct marketing

To exercise any of the above rights, please contact us using the information at the bottom of this page.

Nib Echo is open to users aged 13 and above, but we take children's privacy protection seriously:

• Our services do not address anyone under the age of 13. We do not knowingly collect personally identifiable information from children under 13
• If parents discover that their child has provided personal information during use, please contact us for deletion
• Parents should supervise children's app usage to ensure safety

We may update this Privacy Policy from time to time. When changes are made, we will:

• Post a prominent update notice within the app
• Update the "Last Updated" date at the top of this page
• Notify you in advance for significant changes

Please review this policy periodically to stay informed. Continued use of the app constitutes your agreement to the updated policy.

If you have any questions, comments, or suggestions about this Privacy Policy, please contact us:

We will respond to your inquiries as soon as possible. Typically, we process requests within 7 business days.