Dive Ledger
The Dive Companion.
Log every dive. Find your buddy underwater.
Log any dive in under a minute. Depth, gas, marine life, 30+ fields total. Track 375+ species, pin every site on a 3D globe, search your full history. Works offline. No account needed.
Works Without a Signal
No cell service at the dive site? Dive Ledger stores everything on your device the moment you enter it. Use the full app without signing up. Guest mode, no internet required. Sync to the cloud later if you want to.
Every dive becomes a story
Each dive becomes a rich entry with species sightings, conditions, location, and every detail that matters.
Blue Hole, Belize
USS Liberty, Bali
Great Barrier Reef
Silfra, Iceland
Thistlegorm, Egypt
Richelieu Rock, Thailand
Cenote Dos Ojos, Mexico
Manta Point, Komodo
Blue Hole, Belize
USS Liberty, Bali
Great Barrier Reef
Silfra, Iceland
Thistlegorm, Egypt
Richelieu Rock, Thailand
Cenote Dos Ojos, Mexico
Manta Point, Komodo
Blue Hole, Belize
USS Liberty, Bali
Great Barrier Reef
Silfra, Iceland
Thistlegorm, Egypt
Richelieu Rock, Thailand
Cenote Dos Ojos, Mexico
Manta Point, Komodo
Blue Hole, Belize
USS Liberty, Bali
Great Barrier Reef
Silfra, Iceland
Thistlegorm, Egypt
Richelieu Rock, Thailand
Cenote Dos Ojos, Mexico
Manta Point, Komodo
Browse 375+ Species Underwater
Spot something underwater? Browse a library of 170 marine species and 205 corals. Log sightings to your dive and build a personal life list that grows with every trip.
Share Your Dive Stories
Turn any dive into a shareable card. Stats, location, photos. Send it to your buddy or drop it on Instagram.
See Everywhere You've Been
Every dive gets GPS-tagged with a resolved address. Zoom into any site or filter by region. Your map fills in over time.
Everything you need to dive smarter
Certifications
Save your certs and their photos right in the app. No need to carry the card or worry about losing it.
Buddy System
Find divers on the app by email or add buddies manually. Tag them on every dive you share.
Photos & Video
Attach photos to any dive. Embed YouTube videos. Relive the dive, not just the data.
Gear Tracker
Log 9 gear types: suit, BCD, reg, computer, fins, mask, tank, weights, and other. Set defaults to pre-fill.
375+ Species
Browse 170 marine life species and 205 corals, sponges, and anemones, all with photos. Spot something underwater? Log it.
Personal Stats
Deepest dive, longest bottom time, average SAC rate. All tracked across your full history with site and date.
Depth Profiles
Draw your dive profile with waypoints. See depth and temperature plotted over time.
Your Units
Metric or imperial. Meters or feet, Celsius or Fahrenheit, bar or PSI. Auto-detected from your region.
Search & Archive
Find any dive by site, location, or notes. Archive old logs. Duplicate entries for repeat sites.
10 Dive Types
Cave, Drift, Ice, Night, Wall, Wreck, Shore, Boat, Deep, Reef. Tag every dive.
Share Cards
Turn any dive into a shareable image card. Post your stats to Instagram, WhatsApp, or anywhere.
SAC Rate
Your average SAC rate, auto-calculated from tank size, pressure drop, depth, and duration. Track air efficiency trends on your stats dashboard.
How Dive Ledger compares
| Feature | Paper | Other Apps | Dive Ledger |
|---|---|---|---|
| Data Points per Dive | Limited | Fewer | 30+ |
| Marine Life Library | Manual notes | Basic | 375 species |
| Dive Profiles | None | Basic | Interactive |
| Cloud Sync | None | Varies | Optional |
| Data Export | None | Varies | UDDF |
| Guest Mode | N/A | Rarely | Full access |
| Map & Globe | None | Basic | 3D Globe |
| Cost | Free | Varies | Free to start |
Privacy-first dive logging
Dive Ledger was built privacy-first. Your data lives on your device. Cloud sync is optional and in your control.
Offline-First Storage
All data stored on your device. Internet is optional.
Encrypted Sync
Photos encrypted on-device before upload. Your data stays private.
Full Data Export
Export your complete history in UDDF, CSV, JSON, or PDF. Your data, portable.
No Account Needed
Guest mode gives you every feature. Sign up only if you want cloud sync.
FAQ
No. Dive Ledger offers a full guest mode where you can log dives, track gear, and use all features without creating an account. If you want cloud sync and backup, you can optionally sign up at any time.
Yes. Dive Ledger is built offline-first, so your dive logs are stored locally on your device and fully accessible without internet. Cloud sync is optional and runs in the background when connectivity is available.
Your data is stored locally on your device first. When cloud sync is enabled, photos are encrypted on-device before upload, and all data is encrypted in transit. You can export or delete your data at any time.