MR Custom is an Android tool developed by RabDev that offers secure surfing capabilities through SSH and VPN. It allows users to customize request headers, access free VPN servers, change DNS settings, and share SSH/VPN connections via Hotspot or USB Tethering. The program enables users to export configurations easily and does not require rooting.

MR Custom is a user-friendly application that provides a range of features such as custom HTTP request headers, unlimited free VPN servers, and an all-in-one VPN client experience. With support for both SSH and VPN, including SNI (Server Name Indication), users can modify requests and access blocked websites behind firewalls effortlessly.