RD Tunnel Pro is a free VPN application for mobile coming from rdtunnelpro Network. It is a VPN client that offers users online protection as they surf and browse through the web. It also allows for unlimited connection speeds letting them take full advantage of their internet service provider's maximum bandwidth. Similar to other services like HulaVPN - Fast Secure VPN or Hook VPN - Fast & Secure VPN RD Tunnel Pro operate on an ad-supported business model. This allows users to benefit from its features without having to pay for a subscription plan or the like.
When you first open the RD Tunnel Pro app you will be greeted with a simple user interface without much fluff. It boasts one-tap operation wherein you simply need to press the Start button and it will do the rest for you. It will automatically select the best server based on your current location but you can also manually configure it and choose your preferred one.

Once you're up and running RD Tunnel Pro displays some useful information about your connection from the main screen. Up top are icons showing your upload and download speeds measured in kilobytes and the time it's been running since you connected. Below them are three rectangular icons that contain info for Server Network (Wi-Fi or Mobile) and the Total Time the VPN has been running.

You get the usual benefits such as IP masking to keep you anonymous and hidden online as well as being able to bypass region-specific restrictions on sites and services. As mentioned earlier the service is ad-supported but thankfully it's not too intrusive. One thing to keep in mind before you give it a try is that the company's data-handling policy is unclear so proceed with caution.