Tankenmaru SMART is a free Android app developed by SHIMANO INC. that provides wireless fish-finding capabilities. The app is compatible with the Tankenmaru SMART FISH FINDER and fishing boats equipped with the Tankenmaru fish finder device. The app allows users to detect fish and underwater topography, capturing and displaying the fish finder's video feed wirelessly on their mobile device.

The app's main features include displaying water depth, identifying fish and underwater topography, and an AcuFish feature for determining fish size (requires a compatible parent device). Additionally, the app offers fish group notifications through alarms and vibration, camera functionality, and fish counting. However, it does not offer wireless communication with electric reels.

Overall, Tankenmaru SMART is an excellent app for fishing enthusiasts looking to improve their catch rate. With its wireless fish-finding capabilities and user-friendly interface, it provides an easy-to-use solution for anyone looking to enhance their fishing experience.