RD Tunnel Pro is a free VPN application for Android devices developed by aroub. It offers users online protection while browsing the web and allows for unlimited connection speeds. Similar to other VPN services, RD Tunnel Pro operates on an ad-supported business model, providing its features without requiring a subscription plan.

The app features a simple user interface with a one-tap operation. By pressing the Start button, the app automatically selects the best server based on the user's location. However, users also have the option to manually configure and choose their preferred server.

Once connected, RD Tunnel Pro displays useful information about the connection on the main screen. This includes upload and download speeds in kilobytes, the time since the connection was established, and icons for server, network (Wi-Fi or Mobile), and total VPN runtime.

The app offers benefits such as IP masking for anonymity and the ability to bypass region-specific restrictions on websites and services. While the ad-supported nature of the app is not overly intrusive, it is important to note that the company's data-handling policy is unclear. Users should exercise caution before using the app.