Effective: July 23, 2026
Tool inputs and files
Calculator, text, wheel and file inputs are normally processed only in the current browser's memory. Selected images and PDFs are not uploaded to a USEOYO server or saved to an account, and the selection disappears when the tab is closed. You download generated results yourself.
Storage on your device
Theme, recent tools, wheel or recommendation lists and advertising privacy choice may be kept in local storage on the same device. You can remove this data through browser settings.
Hosting and usage analytics
The site is delivered through Cloudflare. IP address, request time, device or browser details and visited pages may be processed in Cloudflare logs or Web Analytics for security, delivery and service health. See the Cloudflare Privacy Policy.
Advertising and consent
USEOYO is designed to load the Google advertising script only after you allow advertising. Depending on your choice and applicable law, Google and its partners may use cookies, web beacons, IP addresses and usage information to serve and measure ads and prevent abuse. Learn more in Google's partner sites policy. Where a certified consent management platform is legally required, that process applies.
Your choices and contact
Use ‘Privacy choices’ in the footer to revisit the advertising choice. Every tool remains available when you choose essential functions only. For access, deletion or other privacy questions, contact yk.kwon@outlook.com.