Last Updated: October 23, 2025
Introduction
Thank you for using Percentage & Tip Calculator ("the Extension"). This privacy policy explains how we handle your information when you use our Chrome extension.
Short Version
We don't collect, store, transmit, or share any of your personal data. Period.
Data Collection
What We DON'T Collect
We do not collect, store, or transmit:
- Personal information (name, email, phone, etc.)
- Financial information or transaction data
- Calculation data or history (unless you enable local history)
- Browsing history or web activity
- Location data
- Cookies or tracking identifiers
- Analytics or usage statistics
- Any data whatsoever
What We DO Store (Locally Only)
The Extension stores the following data locally in your browser only using Chrome's Storage API:
1. User Settings:
- Currency symbol preference (e.g., $, €, £)
- Decimal places setting (0-4)
- Default tip percentage
- Theme preference (light/dark/auto)
- History toggle setting (on/off)
2. Calculation History (Optional - only if you enable it):
- Your recent calculations
- Timestamps of calculations
- Stored locally for your convenience
Important: This data:
- Stays on your device
- Never leaves your browser
- Is not accessible to us or anyone else
- Can be deleted at any time by clearing your browser data
- Syncs only through Chrome's built-in sync (if you're signed into Chrome)
Data Transmission
The Extension makes ZERO network requests.
- No data is sent to our servers (we don't even have servers)
- No data is sent to third parties
- No external API calls
- No tracking pixels or beacons
- No advertisements or ad networks
- The extension works completely offline
Permissions Explained
Storage Permission
Why we need it: To save your preferences (currency, decimal places, theme, etc.) so you don't have to reconfigure the extension every time you use it.
What we do with it: We only use Chrome's local storage to save your settings on your device.
What we DON'T do with it:
- We don't access any other data in your browser
- We don't read your cookies, history, or passwords
- We don't sync data to external servers
Chrome Sync
If you are signed into Chrome with sync enabled, Chrome itself may sync your extension settings and history across your devices. This is handled entirely by Google Chrome, not by us. We have no access to this synced data.
To learn more about Chrome Sync: https://support.google.com/chrome/answer/185277
Third-Party Services
We use ZERO third-party services.
- No analytics (Google Analytics, etc.)
- No crash reporting
- No advertising networks
- No social media integrations
- No external libraries that phone home
- Nothing
Children's Privacy
The Extension does not knowingly collect any information from anyone, including children under 13. Since we don't collect any data at all, the Extension is safe for users of all ages.
Data Security
Since we don't collect, store, or transmit any data:
- There's no data to be breached
- There's no data to be stolen
- There's no data to be misused
Your settings are stored locally using Chrome's secure storage API, which is protected by Chrome's built-in security features.
Your Rights
You have the right to:
Delete Your Data:
- Go to Settings tab → Click "Reset to Defaults"
- Or uninstall the extension
- Or clear Chrome's extension data
Export Your Data:
- Your data is already on your device only
- No export needed since nothing is stored externally
Opt-Out of Data Collection:
- There's nothing to opt out of - we don't collect data
Changes to This Privacy Policy
If we ever change this privacy policy, we will:
- Update the "Last Updated" date at the top
- Post the new policy in the extension's Chrome Web Store listing
- If significant changes are made, we'll update the extension version and notify users
We don't anticipate changes since our policy is simple: we don't collect anything.
Open Source
The Extension's code is based on an open-source calculator project available at: https://github.com/Prounckk/calc
You can review the code yourself to verify our privacy claims.
Contact Us
If you have any questions about this privacy policy or the Extension:
- GitHub Issues: https://github.com/Prounckk/calc/issues
- Website: https://calculatorspercentage.com
Compliance
GDPR Compliance (EU)
Since we don't collect personal data, GDPR doesn't apply. However, if it did, users would have full control over their locally-stored data.
CCPA Compliance (California)
We don't sell personal information because we don't collect any personal information.
Other Privacy Laws
Our practice of not collecting any data ensures compliance with virtually all privacy regulations worldwide.
Summary
In Plain English:
- We don't know who you are
- We don't know what you calculate
- We don't know when you use the extension
- We don't track anything
- We don't collect anything
- We don't share anything (because there's nothing to share)
Your calculations and settings stay on your device, period.
The Bottom Line
We built this extension to be useful, not to collect data. We respect your privacy because we believe privacy is a fundamental right.
Version: 1.0.0