All Pro features are FREE until the end of 2026! Dive smarter and safer with Apple Watch Ultra — no subscription needed for now.
DiveCore — Dive Computer for Apple Watch Ultra
DiveCore turns your Apple Watch Ultra into a full-featured scuba dive computer, with a companion iPhone app for logging and AI-powered analysis. Built on the trusted Bühlmann ZHL-16C decompression model, it shows the information that matters underwater — clearly, and at a glance.
ON YOUR WRIST
• Real-time depth, dive time and water temperature
• No-decompression limit (NDL) and time-to-surface (TTS)
• Safety-stop guidance with a clear countdown
• Ascent-rate monitoring with haptic alarms
• Adjustable conservatism (Gradient Factors)
• Nitrox / enriched-air support
• Heart rate throughout your dive
AFTER THE DIVE
• Automatic dive logbook
• AI dive analysis with a performance score and personalized insights
• 3D replay of your dive route
• No-fly time guidance based on DAN/UHMS recommendations
DESIGNED FOR APPLE WATCH ULTRA
• A clean, high-contrast display you can read underwater
• Works fully offline — no phone or signal needed during a dive
• Syncs securely to iPhone and iCloud
• Integrates with Apple Health
FREE FOR A LIMITED TIME
All Pro features are free until the end of 2026 — no subscription required for now. Dive smarter, right from your wrist.
IMPORTANT SAFETY INFORMATION
DiveCore is a supplementary tool for trained, certified divers. It is not a substitute for proper training, dive tables or a backup dive computer. Always dive within the limits of your training and certification, follow your primary dive computer, and carry a redundant device. Diving carries inherent risks, including serious injury or death.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
afety and reliability improvements throughout:
• Critical ascent-rate and ceiling alarms stay clearly visible on screen — even during a safety stop.
• Improved safety-stop and decompression guidance with a more accurate ascent-rate readout.
• More reliable sync of your gas mix, gradient factors and settings between Apple Watch and iPhone.
• Dive logs now always record the exact configuration each dive actually ran with.
• More robust recovery after sensor loss or an underwater restart — your dive keeps computing.
• Clearer no-fly guidance (DAN/UHMS: 12 h minimum, 24 h recommended before flying).
• Consistent depth-limit and backup-computer reminders in all 14 languages.
• Many stability and battery optimizations.
Always dive within your training and carry a backup dive computer.
Version 1.1.4
The developer, juseong kim, 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 Linked to You
The following data may be collected but it is not linked to your identity:
Health & Fitness
Location
Identifiers
Usage Data
Diagnostics
Other Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More