4divers
Digital Dive Logbook & Buddies
Free · Designed for iPad. Not verified for macOS.
The ultimate digital dive logbook! Log dives in seconds, auto-import certifications, connect with buddies, and discover worldwide sites.
Log the dive, not just the data. Welcome to 4divers, the beautiful, fast, and intuitive digital logbook designed for scuba divers who want a seamless way to record their underwater stories.
Whether you are a recreational beginner, a technical deep diver tracking complex gas mixes, a professional Divemaster, or a passionate freediver—4divers replaces clunky paper logs and rigid spreadsheets with a stunning, streamlined experience. Best of all, we are completely agency-agnostic, meaning your history belongs to you, not a single training organization.
Key Features Built For Divers:
The Ultimate Dive Logbook (Core Experience)
- 60-Second Logging: Built for quick, one-handed use while at a dive site or on a liveaboard. Open the app and log a dive instantly.
- Deep Data Tracking: Record dive site, date, depth, duration, water temperature, visibility, entry/water type, gear setups, weights, cylinders, gas mixes (Air/Nitrox), and personal notes.
- At-a-Glance Dive Cards: Review past dives instantly with clean, intuitive visual chips showcasing key metrics.
- Lifetime Stats Dashboard: Track your total dive count, cumulative hours underwater, and maximum depth ever achieved.
Smart Certification Manager
- Instant Auto-Import: Search and import your verified PADI, SSI, or SDI/TDI certifications by name.
- Digital Cert Wallet: Display your cards in a beautiful UI featuring official agency logos and immersive underwater designs.
- Manual Backups: Upload photos of physical cards from any agency worldwide (NAUI, CMAS, etc.) so you always have proof of training.
- All Levels Welcome: Full support from Open Water up to Instructor, Technical, and Freediver specialties.
Buddies & Social Layer
- Log Your Crew: Tag exactly who you dived with on every single entry.
- Shared History: See a running tally of how many total dives you’ve completed with each buddy over time.
- Frictionless Connection: Add friends instantly using personal QR codes or quick invite links via WhatsApp and SMS.
Dive Site & Center Discovery
- Global Search: Browse thousands of worldwide dive sites by name, city, or country.
- Smart Filters: Filter locations by experience level, marine life, and geography, or use the "Been Here" filter for spots you've already logged.
- Find Local Shops: Locate nearby PADI 5-Star facilities, SSI centers, or independent operators sourced from global directories.
Why Choose 4divers?
- Agency Agnostic: We proudly support all divers, regardless of where or how you certified.
- Frictionless Onboarding: Sign in instantly with Google—no separate passwords to memorize.
- Custom Preferences: Toggle between metric and imperial units, and customize exactly which fields appear on your log forms.
- Privacy First: Your location and profile data are protected. No data sold, no cross-app tracking.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Yanir Calisar, 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 Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yanir Calisar
- Size
- 2.1 MB
- Category
- Sports
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Age Rating
4+
- 4+
- Copyright
- © 2026 4divers