Last updated: 9/24/2025
Keystone collects information to provide better services to our users. We collect information in the following ways:
When you sign in to Keystone, we collect your email address, name, and profile picture from your Google or Apple account. This information is used to create and maintain your user account.
We collect and store the expense information you enter into the app, including amounts, categories, descriptions, and dates. This data is necessary to provide the core functionality of expense tracking.
We may collect information about how you use the app, including which features you access and how often you use the service.
We use the information we collect to:
• Provide, maintain, and improve our services
• Process and sync your expense data across devices
• Authenticate your identity and maintain account security
• Provide customer support and respond to your requests
• Send you important updates about the service
We do not sell, trade, or otherwise transfer your personal information to third parties. We may share your information only in the following circumstances:
• With your explicit consent
• To comply with legal obligations or law enforcement requests
• To protect the rights, property, or safety of Keystone, our users, or others
• In connection with a merger, acquisition, or sale of assets (with notice to you)
We implement appropriate security measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction. Your data is stored securely using Firebase's infrastructure, which includes:
• Encryption in transit and at rest
• Regular security assessments and updates
• Access controls and authentication mechanisms
• Regular backups and disaster recovery procedures
We retain your personal information for as long as your account is active or as needed to provide you services. You may delete your account at any time through the app settings, which will remove your personal data from our systems within 30 days, except where we are required to retain it for legal purposes.
You have the following rights regarding your personal information:
• Access and update your account information at any time
• Export your expense data from the app
• Delete your account and associated data
• Request correction of inaccurate information
• Opt out of non-essential communications
Keystone integrates with the following third-party services:
For authentication purposes. Please review their respective privacy policies for information about how they handle your data.
For data storage, authentication, and app functionality. Firebase's privacy policy can be found at https://firebase.google.com/support/privacy.
Keystone is not intended for use by children under the age of 13. 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 so we can delete such information.
Your information may be transferred to and processed in countries other than your country of residence. These countries may have data protection laws that are different from the laws of your country. However, we ensure that your data receives an adequate level of protection through appropriate safeguards.
We may update this Privacy Policy from time to time. We will notify you of any significant changes by posting the new Privacy Policy in the app and updating the "Last updated" date. Your continued use of Keystone after such modifications constitutes your acknowledgment and acceptance of the updated Privacy Policy.
If you have any questions about this Privacy Policy or our privacy practices, please contact us at:
Email: [email protected]
Or through the app's support feature in Settings
This privacy policy is effective as of the date listed above and applies to all users of the Keystone expense tracking application.