Reef is an offline-first scuba diving logbook. Log dives, track gear and certifications, view stats — all synced when you're back online.
Available in English, German, Spanish, French, Italian, Japanese, Korean, and Thai.
From your first open-water dive to your thousandth, Reef adapts to how you log.
Fast, simple dive logging — on the boat, in the dive shop, or back at the hotel. Photos and stats included.
Built for remote islands and weeks at sea with no signal. Everything works offline; syncs when you're back online.
Track many certifications, monitor gear service intervals, and keep a clean record across hundreds of dives.
Friendly first-dive wizard, gentle safety-stop prompts, and room to grow as your dive count climbs.
Reef works where other apps fail — on liveaboards, remote islands, and anywhere with no signal.
Every feature works without internet. Data syncs automatically when connectivity returns.
Attach photos to every dive. Stored locally first, backed up to the cloud automatically.
Track depth, bottom time, air consumption, and more with interactive charts and yearly breakdowns.
Keep track of your equipment, service intervals, and how many dives each piece of gear has seen.
Store all your diving certifications with expiry reminders so you never miss a renewal.
Pin your dive sites on an interactive map and see your diving adventures around the world.
Quick answers about pricing, offline use, languages, and exporting your dive log.
Start logging your dives today. Free for up to 25 dives — no credit card required.
