# ZDive — Dive Companion & Planner

> Professional dive companion and planner for Apple Watch and iOS. (iPhone/iPad app by ZYORK SOFTWARE LLC.)

- Source: https://appshunter.io/ios/app/zdive/id6742788878 (this page in markdown: same URL + `.md`)
- Developer: [ZYORK SOFTWARE LLC](https://appshunter.io/developer/1799979057)
- Category: Sports, Health & Fitness
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 17 MB
- Languages: American English, Arabic, Bangla, French (France), Hindi, Japanese, European Portuguese, Russian, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2025-09-16
- Data updated: 2026-08-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/zdive/id6742788878/reviews.md

## What is ZDive?

ZDive transforms your Apple Watch into a smart dive companion with comprehensive iOS analytics. Whether you're snorkeling in tropical waters or logging recreational scuba dives, ZDive provides the tools you need for safe and memorable underwater adventures.

APPLE WATCH — YOUR DIVE COMPANION

Real-time dive tracking with automatic water submersion detection on Apple Watch Ultra (manual controls on other models)
Rich sensor integration: depth, temperature, heart rate, compass, ambient pressure
Scuba and snorkeling modes with Digital Crown navigation
Industry-standard Bühlmann ZH-L16C decompression algorithm — the same model used by leading dive computers
Real-time NDL calculations and safety stop monitoring
Dive simulation mode: practice with realistic training scenarios
Crash-safe recording: in-progress dives are checkpointed and automatically recovered
GPS route tracking with breadcrumb trails
Altitude diving support with automatic calibration
Note: due to Apple's current API restrictions, live depth readings on Apple Watch are limited to about 6 meters. Deeper dives recorded with Apple's Depth app can be imported via HealthKit for full analysis.

iOS APP — ADVANCED ANALYTICS & PLANNING

Beautiful dive trends dashboard with period comparisons and personal records
Interactive dive profile charts and sensor data visualization
Diver profile with certifications and emergency contacts
Import historical dives from Apple Health — duplicates are detected automatically
Export dives in JSON and UDDF formats for other dive log software
COMPREHENSIVE DIVE PLANNING SUITE

Multi-Day Trip Planner with surface interval calculations
Gas Planning Calculator: SAC rates, Nitrox optimizer, and a Trimix reference calculator
Equipment Packing Lists with pre-built templates
No-Decompression Planner with altitude compensation
Interactive Decompression Tables: Bühlmann and PADI RDP
PROFESSIONAL BREATHING TRAINER

10 breathing techniques: box breathing, 4-7-8, diaphragmatic
Freediving-specific CO2 and O2 tolerance tables
Wim Hof Method and tactical breathing patterns
LIVE ACTIVITIES & WIDGETS

Real-time tissue loading on Lock Screen and Dynamic Island
No-fly time countdowns with maximum altitude restrictions
Surface interval tracking between dives
SAFETY & RELIABILITY

16-compartment tissue tracking with 6 conservatism levels
Configurable safety stops (3–6 m depth, 3–7 minutes)
Ascent rate monitoring with visual and haptic warnings
Sensor data validation to filter spikes and false readings
Automatic CloudKit backup and sync across devices
Offline functionality with background synchronization
SEAMLESS DATA MANAGEMENT

Fast Watch-to-iPhone sync with optimized compression
HealthKit integration for comprehensive health tracking
Manual and automatic sync options with bulk import/export
Try it instantly with a built-in demo dive — no gear required
MULTI-LANGUAGE SUPPORT
Available in English, Turkish, Chinese (Simplified), Russian, Spanish, Portuguese, Japanese, Arabic, French, Hindi, Bengali

SUPPORTED DEVICES

Apple Watch running watchOS 10.6 or later (Series 6 and later, SE, and Ultra)
Apple Watch Ultra recommended: automatic submersion detection and enhanced diving sensors
iPhone with iOS 17.6 or later, full iPad support for planning and analysis
ZDive is free to use and supported by ads.

Whether you're exploring coral reefs on a snorkel or logging recreational scuba dives, ZDive provides professional-grade planning and analysis tools in an intuitive interface.

Note: ZDive is intended for recreational use as a dive companion and tracker, not as a certified dive computer. Always dive with certified diving equipment and follow proper safety protocols. Never rely solely on consumer devices for critical diving decisions.

Join ZDive to enhance your underwater adventures. Dive deeper, plan smarter, and explore safely with ZDive.

## Key features

- Real-time dive tracking
- Decompression algorithms
- Dive planning suite
- Breathing trainer
- Live Activities & Widgets
- CloudKit backup and sync

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/zdive/id6742788878/reviews.md

### 5/5 — Easy to use

*2025-11-16*

Super clean and easy to use! ZDive makes tracking dives so simple, and the maps + stats are really cool. Perfect app for anyone who loves diving. Highly recommend!

### 5/5 — Excellent app for Divers

*2025-10-09*

Great app! Easy to use and perfect for tracking my dives.

## Frequently asked questions about ZDive

### What devices does ZDive support?

ZDive is designed for Apple Watch Series 6 and later (watchOS 7.6+) and is optimized for Apple Watch Ultra. The companion iOS app is available on iPhone and iPad.

### Does ZDive have ads?

No, ZDive is completely ad-free, allowing for an uninterrupted diving experience.

### How does ZDive handle dive planning?

ZDive offers a comprehensive suite including a multi-day trip planner with surface interval calculations, a gas planning calculator for various gas mixes, and no-decompression planners with altitude compensation.

### Can I import my old dive logs into ZDive?

Yes, you can import historical dives from Apple Health with automatic depth synthesis. ZDive also supports exporting dives in JSON and UDDF formats for compatibility with other dive software.

### What decompression algorithms does ZDive use?

ZDive utilizes industry-standard decompression algorithms, including Bühlmann ZH-L16C, and offers interactive decompression tables for Bühlmann and PADI RDP with zoom functionality.

### Does ZDive offer offline functionality?

Yes, ZDive provides offline functionality with background synchronization, ensuring your data is backed up and accessible even without a constant internet connection.

### What breathing techniques are included in ZDive?

ZDive features a professional breathing trainer with 10 specialized techniques for diving performance, including box breathing, 4-7-8, diaphragmatic exercises, CO2 and O2 tolerance tables for freediving, and Wim Hof Method patterns.

### How often is ZDive updated?

ZDive was last updated on September 29, 2025, with version 1.0.4, indicating regular development and support from the developer.

## Version history (last 5 releases)

### 1.0.5 — 2026-08-03

WHAT'S NEW
- Fresh new look: redesigned dashboard, dive log, planning tools, and settings
- Improved decompression engine accuracy, backed by a new safety test suite
- More reliable iPhone–Watch and iCloud sync
- Crash-safe recording: in-progress dives now auto-recover if the app is interrupted
- Better tissue loading tracking and Live Activity updates
- Localization improvements across all 11 languages
- Many stability and performance fixes on iOS and watchOS

### 1.0.4 — 2025-09-29

UI, localization and stability fixes for both iOS and WatchOS

### 1.0.3 — 2025-09-24

- Added a demo dive to highlight the app’s features
- Enhanced data synchronization performance
- Expanded UI, localization, and overall stability improvements

### 1.0.2 — 2025-09-21

- Added language support for Chinese, Russian, Spanish, Portuguese, Japanese, Arabic, French, Hindi, Bangla
- CMAS cerfication detail added into Diver Profile
- Onboarding
- UI & Stability updates

### 1.0.1 — 2025-09-18

- UI & Stability fixes
- NDL calculation fix for synced dive logs

## Apps similar to ZDive

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Below: Dive Log & Fish ID](https://appshunter.io/ios/app/below-dive-log-and-fish-id/id6756759745) | 5.0 (4) | Free | Sports |
| [Scuba Gas Calculator](https://appshunter.io/ios/app/scuba-gas-calculator/id6741871339) | — | $3.99 | Sports |
| [Blue Infinity Dive Watch](https://appshunter.io/ios/app/blue-infinity-dive-watch/id6738265239) | — | Free | Sports |
| [FreeDive Ultra](https://appshunter.io/ios/app/freedive-ultra/id6760556868) | 5.0 (3) | Free | Sports |
| [Dive Toolbox](https://appshunter.io/ios/app/dive-toolbox/id6759796903) | — | Free | Sports |
| [Spearfishing Tracker Dive Log](https://appshunter.io/ios/app/spearfishing-tracker-dive-log/id6757857991) | — | Free | Sports |

## More apps by ZYORK SOFTWARE LLC

- [Zikr Compass](https://appshunter.io/ios/app/zikr-compass/id6752348743)
- [DriveCast](https://appshunter.io/ios/app/drivecast/id6753315061)

All apps by ZYORK SOFTWARE LLC: https://appshunter.io/developer/1799979057

---

*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 2026-08-09.*