Great Depths vs Sea Depth

Turn your iOS device into a digital depth finder. Great Depths offers coverage of the entire US coast, the Great Lakes, Lake Champlain and more... Know exactly where you are on the water and cruise to your port of call directly and safely. Sail with Great Depths for iPhone and iPad. Great Depths offers digital depth readouts, live tide data and NOAA RNC nautical charts in 60 bargain-priced packages. Digital depth readouts are automatically adjusted based on current tide/lake level and are updated as you move or viewed anywhere with the touch of a finger. -- The handy mileage menu calculates distance between any two points instantly. -- Purchases are automatically synced across all your iOS devices and downloaded packages are stored locally on your devices so you don’t have to rely on cell service. -- Best of all, Great Depths is FREE and never has adds! You can download the app and preview the available charts packages without spending a dime. Chart coverage includes the entire coast of the contiguous USA, the Great Lakes, Lake Champlain, the Erie, Oswego and Champlain Canals, Lake Mead, Lake Oswego, Lake Pend Oreille, Lake Okeechobee, Lake Winnebago, Franklin D. Roosevelt Lake, Lake Cayuga, Lake Seneca Lakes, Wake Island and more....

SeaDepth delivers professional-grade bathymetric charts for anglers looking to add a new level of detail and insight offshore. Built using high-resolution survey data and advanced shaded-relief techniques, SeaDepth reveals underwater structure, contours, and terrain that traditional charts often fail to show. The result is a clearer, more intuitive view of the seafloor - helping anglers and captains better understand offshore environments before and during time on the water. In addition to detailed depth visualization, SeaDepth offers optional data overlays, intelligent contour labeling, waypoint interoperability, and analytical tools that enhance situational awareness offshore. Key Features • High-resolution shaded-relief bathymetry • Detailed, clearly labeled depth contours • Intelligent contour interval scaling by depth range • Pipeline overlay (Gulf of America) • Bottom composition overlays highlighting seafloor characteristics • GPX waypoint import and export for interoperability with other platforms • Drift Test tool to observe drift direction and speed over time • Offline chart access for use beyond cellular coverage • Smooth zooming and panning optimized for offshore use Depth Contours with Intelligent Labeling SeaDepth uses a graduated contour labeling scheme designed to provide maximum detail where it matters most, while maintaining clarity and performance in deeper  depths: • 1-foot contour intervals from 1 to 500 feet • 10-foot contour intervals from 500 to 2,500 feet • 80-foot contour intervals from 2,500 feet to abyssal depths This approach delivers high-resolution insight in shallow and mid-depth areas while avoiding visual clutter in deepwater environments. Overlay Intelligence SeaDepth allows users to enable optional overlay layers such as pipelines and bottom composition data in supported regions, including the Gulf of America. These overlays provide additional context and help users interpret bottom features and structural edges with greater confidence. All available overlay layers are included at no additional charge. Waypoint Management (GPX Support) SeaDepth supports importing and exporting waypoints using the GPX file format, making it easy to move data between SeaDepth and other compatible marine devices, charting software, or planning tools. This allows users to maintain consistent waypoint libraries across platforms. SeaDrift-Drift Test Feature The built-in Drift Test feature helps users evaluate drift behavior by tracking movement over time. This is especially useful when assessing current and wind influence to have more productive drifts. Built for Offshore Reliability Charts, overlays, and waypoint data are stored locally on the device, allowing SeaDepth to function reliably offshore where connectivity may be limited or unavailable. Performance and usability are optimized for real-world offshore conditions. Disclaimer SeaDepth is intended as a supplemental planning and visualization tool only. It is not a substitute for official nautical charts, onboard navigation systems, or prudent seamanship. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/