Fathom Dive Log
Offline Scuba Dive Logbook
$3.99 · Designed for iPad. Not verified for macOS.
Track every dive with depth profiles, dive numbering, and gas mix logs. Smart statistics reveal diving patterns. Perfect for recreational and tech divers.
FATHOM DIVE LOG - YOUR PERSONAL DIVE JOURNAL
A focused, offline-first logbook for scuba divers. Record every dive and watch your underwater history unfold across years.
RECORD
Log the essentials — dive number, date, location, max depth, bottom time, water temperature, buddy, and notes. Eight built-in dive types (Reef, Wreck, Night, Drift, Wall, Deep, Cave, Boat) keep entries organized. A clean form fills out quickly between dives.
REVIEW
Each dive comes with a depth profile chart — a graph of how the dive unfolded over time. See what you did in the water at a glance, from descent to surface.
TRACK
Lifetime stats track total dives, deepest dive, total underwater time, and how many of each dive type you've logged. Numbers update automatically — no manual recalculation.
WORKS ANYWHERE
Fully offline. No account, no sign-in, no cloud sync, no ads. The app works on a rocking boat with no signal. All data stays on your device, in your control.
PRIVACY FIRST
No analytics, no trackers, no telemetry. Just a quiet logbook.
PAY ONCE, OWN FOREVER
No subscriptions, no in-app purchases, no recurring fees. Pay once and the logbook is yours.
UNIVERSAL APP
Designed for both iPhone and iPad.
Note: Fathom Dive Log is a personal logbook. It does not compute decompression schedules, render ascent-rate alarms, or replace your dive computer. Always dive within your certification limits.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 剑挥 吴, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 剑挥 吴
- Size
- 34.7 MB
- Category
- Sports
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Fathom Dive Log
