Depth Guru is a mobile app that allows boaters to create customized maps of lake or ocean bottoms using their smartphone and sonar device. The app collects sonar data in real-time to automatically generate maps without internet access. These maps provide more accurate depth readings than traditional paper charts. Depth Guru plans to expand its app to more platforms, integrate social sharing features, and generate revenue through monthly subscriptions. The company is seeking €200K in funding to grow its user base to 3,000 paying customers in the US and reach €200K in turnover next year.