Privacy Policy
Last updated: May 2026
What we collect
When you use Plus One Vision we collect anonymous test data including:
- Your test responses (slider positions, font sizes, calculated correction)
- The AI explanation generated for your result
- Your device type (phone, tablet, or desktop)
- The language you selected
- Your feedback responses if provided
We do not collect your name, email address, or any other personal information. No account is required to use Plus One Vision.
What we do not collect
We do not collect:
- Names, email addresses, or contact information
- Location data or IP addresses
- Payment information
- Any information that identifies you personally
Your test results are completely anonymous.
How we use your data
Anonymous test data is used to:
- Improve the accuracy of our reading glasses strength recommendations
- Understand how people use the tool across different languages and devices
- Develop future features
We do not sell your data to third parties. We do not use your data for advertising.
Data storage
Anonymous session data is stored securely using Supabase, a cloud database service. Data is retained for 12 months and then deleted.
Plus One Vision is operated from New York, United States.
Cookies
Plus One Vision does not use cookies.
We use localStorage — browser storage on your device — to temporarily store your test session. This data stays on your device and is not transmitted to us unless you complete the test.
No cookie consent banner is required.
Affiliate links
Plus One Vision participates in affiliate programs with reading glasses retailers. When you click a shop link and make a purchase, we may earn a small commission at no extra cost to you.
Third-party retailers may set their own cookies when you visit their site. Please refer to each retailer's privacy policy for details.
Your rights
If you are located in the European Union you have rights under GDPR including the right to access, correct, or delete your data.
Since we collect no personal information, there is no personal data to access, correct, or delete.
For any privacy questions contact us: hello@plusonevision.com
Changes to this policy
We may update this privacy policy from time to time. The date at the top of this page shows when it was last updated.