Sony REC Remote is a free iPhone application developed by Sony Corporation. Specifically designed for the IC recorder from Sony, this mobile app enables users to remotely control the IC recorder through Bluetooth technology. With REC Remote, users can effortlessly start/stop recordings, check and adjust recording volume levels, add track marks, and modify recording settings. It is recommended to consult the help guide to ensure compatibility with your devices. Please note that certain features may not be available on all devices, and some functions may be restricted based on regions or countries. To access all the features, it is advisable to keep REC Remote updated to the latest version.