Udeler Reborn is a local-only desktop application. We do not operate any backend servers, we do not track your usage, and we do not collect telemetry. Everything you do within the application stays on your machine.
When you provide a Udemy Access Token to log in, it is securely stored only on your local device. If you enable Vault Mode, this token is encrypted at rest using AES-256-GCM, tied securely to your OS-native credential keychain (Windows Credential Manager, macOS Keychain, or libsecret). It is never sent to any server other than Udemy's official API for authentication.
The application only connects to two external services:
Because Udeler Reborn is fully open-source, any user or security researcher can review the source code on GitHub to verify these claims. The application is completely transparent about the local network requests and disk storage operations it performs.