Free
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About
Your dive logbook, free and without a subscription. Log your dives, identify what you see, and take everything you have dived with you.
BRING THE DIVES YOU ALREADY HAVE
Connect your dive computer over Bluetooth and pull them straight across. Coming from another app? Import your UDDF or CSV files and don't start from scratch. Dive with an Apple Watch? Your dives are already there.
DISCOVER MARINE LIFE
1,171 species with a profile, artwork and where to find them. Mark what you spot and grow your collection dive by dive.
LOG EVERY DIVE
Depth, bottom time, temperature, gas mix, gear and what you saw. Add your photos. And scan the stamp your dive centre pressed into your paper logbook to keep it with the dive, where it won't get lost.
FOLLOW YOUR JOURNEY
Your dives and the countries you have visited, on a world map. Your deepest dive, your total time underwater, your statistics.
SHARE IT
Turn a dive, a species or your whole logbook into a picture ready to send, with your dive centre's stamp on it.
TAKE ON CHALLENGES
Underwater quests, XP and levels as your experience grows.
YOURS, AND WITH YOU
• Free, no subscription and no in-app purchases
• Works with no signal: on the boat too
• Syncs across your devices through your iCloud
• Export your logbook as UDDF or CSV whenever you like
• In English, Spanish, French, German and Portuguese
Explore more. Discover more. Remember every dive.
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What's New in Nuddi
1.3.0
September 5, 2026
Everything you log, now something you can show. • Share a dive, a species or your whole logbook as a card — with your dive centre's stamp on it. • Scan the stamp your centre pressed into your paper logbook and keep it with the dive. • Export your logbook as UDDF or CSV. It's yours — take it anywhere. • Photos on a dive, and a map of everywhere you've dived. • Memories: what you were diving on this date in another year. • Logging a whole day of diving is now one dive after another, not one form at a time. • New species in the atlas.
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