This app displays sea depth or land altitudes with a simple tap. It's ideal for travelers on cruises or hiking adventures, and can optionally track your journey.

248+ iOS apps & games curated and reviewed
Every iPhone needs a few good depth finder free apps and games. We benchmark 248+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | Jun 2026 | |
| 2 | Free | 4.5★ (652) | Yes | Yes | Aug 2026 | |
| 3 | Free | 2.9★ (2.3K) | No | Yes | Aug 2026 | |
| 4 | Free | 4.7★ (14K) | No | Yes | Aug 2026 | |
| 5 | Free | 4.7★ (31K) | Yes | Yes | Aug 2026 | |
| 6 | Free | 2.9★ (35) | No | No | May 2026 | |
| 7 | Free | — | No | No | Jun 2026 | |
| 8 | Free | 3.0★ (1) | No | No | Aug 2026 |

This app displays sea depth or land altitudes with a simple tap. It's ideal for travelers on cruises or hiking adventures, and can optionally track your journey.






This app provides detailed lake depth and bottom hardness maps to help anglers locate prime fishing spots. It also offers community features for sharing catches and tips, weather forecasts, and offline map access. Enhance your fishing experience with real-time sonar data when paired with compatible devices.






Access detailed nautical charts and advanced boating features offline on your mobile device. Plan trips with dock-to-dock guidance, check weather and tides, and connect with a community of boaters. Ideal for cruising, fishing, sailing, and diving.


This app provides official, weekly updated nautical charts for marine navigation. It allows for offline map downloads, GPS track recording, and integration with onboard instruments. Enhance your boating safety and experience with advanced features like weather forecasts and AIS collision detection.


This app helps anglers find the best times and locations to fish by providing detailed forecasts for tides, moon phases, weather, and marine conditions. It offers interactive maps to discover and save fishing spots, track routes, and access offline nautical charts, along with a catch logbook and fishing regulations.


This application transforms your smartphone or tablet into a high-performance sonar system. It connects wirelessly to a dedicated transmitter, offering detailed underwater views and essential fishing data. Explore its features in demo mode or with a compatible transmitter.




This app transforms your iPhone into a powerful sensor platform, streaming LiDAR depth, RGB camera, IMU, and GPS data to your computer. It's designed for robotics development and research, offering both Wi-Fi and USB connection options for seamless integration with ROS 2.












This comprehensive dive toolbox offers planning and safety features for recreational, Nitrox, TEC, and CCR divers. It includes a digital logbook with Bluetooth connectivity for various dive computers, extensive import/export options, and tools for underwater media editing.











