Privacy Policy
Last updated: March 22, 2026
Aligner PowerTools ("the Extension") is a Chrome browser extension that adds efficiency tools to aligner treatment planning software. This privacy policy explains what data the Extension collects, how it is used, and your rights.
Data We Collect
- Email address — collected during license activation to associate your subscription and send your license key.
- License key — stored locally on your device and validated periodically with our server.
- Usage analytics — we collect anonymous session data including: time spent per case, number of comment lines written, which tool buttons were used, and session timestamps. This data is associated with your license key, not your personal identity.
- Case identifiers — case IDs and patient IDs from the treatment planning URL are recorded with session analytics to help you track your own usage in the Stats tab. We do not access or store any patient health information, treatment plans, or clinical data.
- Device identifier — a randomly generated device ID is stored locally to manage the multi-device limit (up to 3 devices per license).
Data We Do NOT Collect
- Patient names, health records, or treatment plan details
- Browsing history outside of the treatment planning site
- Passwords or authentication credentials
- Financial or payment information (payments are processed by Stripe)
- Location data
How We Use Your Data
- To validate your license and manage your subscription
- To provide usage statistics in the Stats tab within the Extension
- To improve the Extension based on aggregate usage patterns
- To send you your license key and important account communications
Data Storage & Sync
User preferences (button order, keyboard shortcuts, custom templates, and settings) are stored using Chrome's built-in sync storage, which automatically syncs across your devices when you are signed into Chrome. License keys and device identifiers are stored locally on each device.
Session analytics are transmitted to our server over HTTPS and stored in a secure database hosted on Railway.
Third-Party Services
- Stripe — for payment processing (when applicable)
- Resend — for sending license key emails
- Railway — for server hosting and database
We do not sell, rent, or share your personal data with any third parties for marketing or advertising purposes.
Data Retention
Session analytics data is retained for the duration of your active subscription. If you cancel your subscription, your data will be deleted within 90 days of cancellation. You may request deletion of your data at any time by contacting us.
Your Rights
You may request access to, correction of, or deletion of your personal data at any time by contacting us at the email address below.
Contact
If you have questions about this privacy policy, please contact us by replying to any email from Aligner PowerTools, or reach out to the developer directly.