# Fathom: Freedive — Freedive training & dive log

> Freedive training & dive log (iPhone/iPad app by Brian Theuma.)

- Source: https://appshunter.io/ios/app/fathom-freedive/id6763048899 (this page in markdown: same URL + `.md`)
- Developer: [Brian Theuma](https://appshunter.io/developer/1503319986)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17 · 10 MB
- Languages: English
- Released: 2026-05-06
- Data updated: 2026-07-10
- User reviews in markdown: https://appshunter.io/ios/app/fathom-freedive/id6763048899/reviews.md

## What is Fathom?

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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Fathom: Freedive Pro Monthly | $2.99 | per month |
| Fathom: Freedive Pro Yearly | $19.99 | per year |



## Version history (last 4 releases)

### 1.0.3 — 2026-06-18

- fixed minor bugs
- updated support url in about section

### 1.0.2 — 2026-06-01

- minor improvements and bug fixes.

### 1.0.1 — 2026-05-06

• minor bug fixes

### 1.0 — 2026-05-06

No release notes.

## More apps by Brian Theuma

- [LightBoard](https://appshunter.io/ios/app/lightboard/id1503319987)
- [LearnIQ Periodic Table](https://appshunter.io/ios/app/learniq-periodic-table/id1547759725)

All apps by Brian Theuma: https://appshunter.io/developer/1503319986

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-10.*