Subsurface for Mac

Product summary

Subsurface is a free, open-source dive-log application built to help divers keep a reliable record of their underwater activity. It provides an intuitive interface for logging essential dive details—such as site, depth, duration, and environmental conditions—making it suitable for hobbyists and professionals alike.

Compatibility and import capabilities

The program accepts data from a wide range of dive computers and file formats, so you can import logged dives directly from your device. That makes digitizing past dives and maintaining continuity between devices straightforward.

Main features and tools

• Customizable reports and exportable summaries to produce tailored logs and print-ready records.
• Built-in statistics and trend summaries that help you review experience and performance over time.
• Dive-planning utilities to model upcoming dives and calculate key parameters.
• A shared site-directory that lets users contribute and consult location notes and trip memories.

Collaboration, portability, and data access

Subsurface emphasizes data openness: saved logs can be shared with the community, synchronized across installations, and exported for backup or further analysis. This focus on portability and group sharing makes it easier to coordinate trips and preserve a comprehensive diving history.

Recommended alternative

If you want a different free option, consider QLPrettyPatch — a no-cost alternative that some users prefer for specific workflows or interface preferences.