Dive smarter. Dive safer.
Thalos is your all-in-one scuba dive log, planner, and safety companion. Professional tools for every diver — from student to instructor.
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Dive Logbook
Log training and recreational dives with full version history, buddy signatures, and marine life sightings.
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510+ Dive Sites
Browse a curated library spanning 13 world regions — with GPS coordinates, conditions, and access notes.
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9 Dive Calculators
Gas planner, decompression planner (ZHL-16C), SAC rate, gas blending, weight calculator, and more.
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Emergency Mode
One-tap access to emergency contacts, dive site EAPs, and procedures — works fully offline.
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Instructor Module
Manage students, courses, skill sign-offs, paperwork, and training dives with digital signatures.
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Community
Discover dive classes, trips, and dive centers. Collaborate with buddies and share dive media.