This Privacy Policy describes how Sign It App ("we," "our," or "us") collects, uses, and protects your information when you use our mobile application (the "App"). We are committed to protecting your privacy and ensuring the security of your personal information.
Documents and Content
Documents you import, scan, or photograph using the App
Digital signatures you create using our drawing or keyboard tools
Custom stamps you create or upload
Text annotations you add to documents
Document names and organization preferences
Account and Usage Information
App usage patterns and feature interactions
In-app purchase and subscription information
Settings and preferences you configure
Error logs and crash reports (anonymized)
Device and Technical Information
Device type, operating system version, and unique device identifiers
App version and performance metrics
Camera and photo library access (only when you grant permission)
File system access for document import/export
Usage Analytics
Features used and frequency of use
Time spent in different sections of the App
Error logs and diagnostic information (anonymized)
Document Processing: To enable document editing, signing, and annotation features
Signature Management: To store and organize your digital signatures and stamps
File Operations: To import, export, and manage your documents
Sync and Backup: To maintain your data across app sessions (locally on your device)
Feature Development: To understand how features are used and improve functionality
Bug Fixes: To identify and resolve technical issues
Performance Optimization: To enhance app speed and reliability
Subscription Management: To process in-app purchases and manage subscription status
Customer Support: To respond to your questions and provide assistance
Legal Compliance: To comply with applicable laws and regulations
Your documents, signatures, and stamps are stored locally on your device using encrypted Core Data storage
No documents or signature content is transmitted to our servers unless you explicitly choose to share or export them
App preferences and usage tracking are stored locally using secure iOS UserDefaults
We do not store your documents or signatures on our servers
In-app purchase information is processed through Apple's App Store, subject to Apple's Privacy Policy
Optional analytics data may be transmitted to help improve the App (anonymized)
Encryption: All locally stored data is encrypted using iOS security frameworks
Access Controls: App data is protected by iOS app sandboxing
Secure Transmission: Any data transmitted uses industry-standard encryption (TLS/SSL)
Regular Updates: We regularly update security measures to address potential vulnerabilities
In-app purchase processing and subscription management
Subject to Apple's Privacy Policy
We do not receive your payment information directly
Anonymized usage statistics to improve app performance
No personally identifiable information is shared
You can opt-out of analytics in the App settings
View and Manage: Access all your signatures, stamps, and documents within the App
Delete: Remove any signatures, stamps, or documents at any time
Export: Save your documents to your preferred location or cloud service
Camera Permissions: Grant or revoke camera access for document scanning
Photo Library Access: Control access to your photo library for document import
Analytics: Opt-out of usage analytics in App settings
Subscription Control: Manage or cancel subscriptions through your Apple ID account
Data Deletion: Uninstalling the App removes all locally stored data
Purchase Restoration: Restore previous purchases on new devices
Our App is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us immediately.
Documents and Signatures: Retained locally on your device until you delete them
App Preferences: Retained until you uninstall the App or reset settings
Usage Analytics: Anonymized data may be retained for up to 2 years for improvement purposes
Purchase History: Managed by Apple through your Apple ID account
Since all document and signature data is stored locally on your device, there are no international transfers of your content. Any anonymized analytics data transmitted may be processed in various countries, but contains no personally identifiable information.
We may update this Privacy Policy from time to time to reflect changes in our practices or applicable laws. We will:
Notify you of significant changes through the App or App Store updates
Post the updated policy with a new "Last Updated" date
Continue to protect your information in accordance with the most current policy
For users in the European Union, our legal basis for processing your information includes:
Contract Performance: To provide the App services you've requested
Legitimate Interest: To improve the App and provide customer support
Consent: For optional features like analytics (which you can withdraw at any time)
If you are located in the EU, you have additional rights including:
Right to access your personal data
Right to rectify inaccurate data
Right to erase your data
Right to restrict processing
Right to data portability
Right to object to processing
Right to withdraw consent
California residents have additional rights under the California Consumer Privacy Act (CCPA):
Right to know what personal information is collected
Right to know whether personal information is sold or disclosed
Right to say no to the sale of personal information
Right to access personal information
Right to equal service and price
Note: We do not sell your personal information to third parties.
If you have questions about this Privacy Policy or our privacy practices, please contact us:
Email: nathanlinshuo@gmail.com
For EU users, you may also contact your local data protection authority if you have concerns about how we handle your data.
This Privacy Policy is designed to comply with:
General Data Protection Regulation (GDPR)
California Consumer Privacy Act (CCPA)
Apple App Store Guidelines
Children's Online Privacy Protection Act (COPPA)
Other applicable privacy laws and regulations
Document Signing Apps - Privacy Notice:
This App processes documents and signatures locally on your device. We do not have access to your document content, and your sensitive information remains under your control at all times.