Standard software tends to leave crumbs in AppData and Program Files . The portable version keeps all configuration files inside its own folder. When you delete the folder, it’s gone —no uninstaller needed.
Here’s the nuance: The official 3uTools website primarily offers the . However, the “portable” version you see on third-party archives (like PortableApps.com or major softpedia mirrors) is often the standard build repackaged to run without writing to the registry. 3utools portable version
3uTools relies on a service called 3uTools Service or Apple's MobileDeviceService . Standard software tends to leave crumbs in AppData