Tankenmaru SMART is a free iPhone app developed by SHIMANO INC. It is a wireless fish finder app that allows users to detect fish schools and underwater terrain, providing a clear view of what lies beneath the water's surface. This app can be used with fishing boats equipped with the Tankenmaru SMART FISH FINDER or those with the compatible Tankenmaru parent unit.

The Tankenmaru system revolutionizes fishing by wirelessly capturing fish finder images from the parent unit and displaying them on your smartphone. With Tankenmaru SMART, you can easily visualize water depths, track fish positions, and even determine the size of the fish using the AccuFish feature (only available with AccuFish compatible parent units).

The app also offers additional features such as fish alarm notifications, fish finder screen recording (video and screenshots), camera functionality, and fish count tracking. Please note that the app does not support wireless communication with electric reels.