# Deepline: Apnea & Freedive — Breath-hold trainer & log

> Breath-hold trainer & log (iPhone/iPad app by Vitaly Vivchar.)

- Source: https://appshunter.io/ios/app/deepline-apnea-and-freedive/id6782933972 (this page in markdown: same URL + `.md`)
- Developer: [Vitaly Vivchar](https://appshunter.io/developer/1509055700)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 35 MB
- Languages: American English
- Released: 2026-06-29
- Data updated: 2026-07-03
- User reviews in markdown: https://appshunter.io/ios/app/deepline-apnea-and-freedive/id6782933972/reviews.md

## What is Deepline?

Find your breath. Deepline pairs a calm apnea trainer — CO2 and O2 tables plus box breathing — with a beautiful freediving logbook. Fully offline. The numbers are the heroes, and the water goes still when you hold.

Deepline is for freedivers, spearfishers and snorkelers — and for anyone who wants a quieter way to train their breath.

Train your breath hold
- CO2 and O2 apnea tables, auto-built from your personal max
- Box breathing for daily calm and pre-dive focus
- A still, high-contrast timer made for wet hands and bright sun
- The water stays motionless during every hold — nothing to distract you

Log every dive
- Depth, breath-hold time, discipline and conditions
- A GPS pin for every spot
- Your full freediving logbook, kept on your device

See your progress
- Watch your breath-hold time grow, session after session
- Personal records, kept simple

Calm by design
- A signature living-water interface, not another stopwatch
- No clutter, no noise, no emoji
- Works fully offline — no account, no sign-up, your data stays yours

How it works
1. Measure your baseline breath hold
2. Train with CO2 / O2 tables and box breathing
3. Log your dives and watch your progress deepen

Free to use. Your breath, your data, your line to the deep.


## Version history (last 1 release)

### 1.0.0 — 2026-06-30

No release notes.

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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 2026-07-03.*