Fathom: Freedive
Freedive training & dive log
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Fathom: Freedive is now on the App Store. Train with CO₂ and O₂ tables, log every dive across 8 disciplines, and track your personal bests.
Fathom is the freediving companion built for divers who take their training seriously.
Track breath holds, follow structured training tables, log every dive, and monitor your personal bests — all in one app, synced to iCloud.
TRAINING TABLES
Built-in CO₂ and O₂ tables with guided holds and timed rest periods. Each session runs automatically — you focus on the breath, not the clock. Build your own tables with the Custom Table Builder and save them as reusable presets with Fathom Pro.
BREATHWORK
Four guided breathwork techniques for dry training:
· Box breathing — pre-dive calm and nervous system reset
· Coherence breathing — surface recovery at 6 breaths per minute
· 4-7-8 breathing — deep relaxation between sessions
· Diaphragmatic breathing — the foundation of every effective breath-up
DIVE LOG
Log sessions across eight disciplines: Static (STA), Dynamic (DYN), Dynamic No Fins (DNF), Dynamic Bi-Fins (DYNB), Constant Weight (CWT), Constant Weight Bi-Fins (CWTB), Constant No Fins (CNF), and Free Immersion (FIM).
Record depth, distance, or hold time alongside water temperature, location, buddy context, equipment, RPE, mental state, and sleep quality. Log safety incidents — including LMC, blackout, and squeeze — with severity and notes. Your entire history syncs to iCloud automatically.
PERSONAL BESTS & GOALS
Set per-discipline training goals and track personal bests for STA, DYN, DNF, CWT, CNF, and FIM. Every new best is recorded the moment you log a dive that beats it.
FATHOM PRO
Upgrade to unlock:
· Custom training tables
· Save and reuse table presets
· Unlimited dive log entries
Fathom Pro is available as a monthly or annual subscription. Subscriptions are billed to your Apple ID account and auto-renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple ID account settings at any time.
Monthly: €2.99/month
Annual: €19.99/year (save 44%)
Terms of Use: https://fathomfreedive.app/terms
Privacy Policy: https://fathomfreedive.app/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New: Lock Screen widgets
Track your weekly dive progress, current streak, or time since your last session right from the Lock Screen or StandBy — no need to open the app.
Also includes under-the-hood reliability improvements.
The developer, Brian Theuma, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Brian Theuma
- Size
- 10.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17 or later.
- iPhone
Requires iOS 17 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
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Fathom: Freedive Pro Yearly $19.99
- Fathom: Freedive Pro Monthly $2.99
- Copyright
- © 2026 Brian Theuma