# DiveCore: Dive Computer — Safer dives, smarter insights

> Apple Watch Ultra dive computer with AI analysis and dive logging. (iPhone/iPad app by juseong kim.)

- Source: https://appshunter.io/ios/app/divecore-dive-computer/id6758817797 (this page in markdown: same URL + `.md`)
- Developer: [juseong kim](https://appshunter.io/developer/1875156558)
- Category: Sports
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 18.0 · 16 MB
- Languages: Korean, Dutch, German (Germany), Russian, European Spanish, American English, Italian, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan) and 4 more
- Released: 2026-05-29
- Data updated: 2026-09-06
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/divecore-dive-computer/id6758817797/reviews.md

## What is DiveCore?

DiveCore — Dive Computer for Apple Watch Ultra

DiveCore turns your Apple Watch Ultra into a full-featured scuba dive computer, with a companion iPhone app for logging and AI-powered analysis. Built on the trusted Bühlmann ZHL-16C decompression model, it shows the information that matters underwater — clearly, and at a glance.

ON YOUR WRIST
• Real-time depth, dive time and water temperature
• No-decompression limit (NDL) and time-to-surface (TTS)
• Safety-stop guidance with a clear countdown
• Ascent-rate monitoring with haptic alarms
• Adjustable conservatism (Gradient Factors)
• Nitrox / enriched-air support
• Heart rate throughout your dive

AFTER THE DIVE
• Automatic dive logbook
• AI dive analysis with a performance score and personalized insights
• 3D replay of your dive route
• No-fly time guidance based on DAN/UHMS recommendations

DESIGNED FOR APPLE WATCH ULTRA
• A clean, high-contrast display you can read underwater
• Works fully offline — no phone or signal needed during a dive
• Syncs securely to iPhone and iCloud
• Integrates with Apple Health

FREE FOR A LIMITED TIME
All Pro features are free until the end of 2026 — no subscription required for now. Dive smarter, right from your wrist.

IMPORTANT SAFETY INFORMATION
DiveCore is a supplementary tool for trained, certified divers. It is not a substitute for proper training, dive tables or a backup dive computer. Always dive within the limits of your training and certification, follow your primary dive computer, and carry a redundant device. Diving carries inherent risks, including serious injury or death.

## Key features

- Bühlmann ZHL-16C decompression model
- Real-time NDL + decompression ceiling display
- Estimated dive route visualization
- No-fly timer with Live Activity
- On-device AI dive scoring
- Dive log with iCloud sync
- Underwater color correction

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| DiveCore Pro (Yearly) | $29.99 | per year |
| DiveCore Pro (Monthly) | $4.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| DiveCore Pro 1-Day Pass | $2.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/divecore-dive-computer/id6758817797/reviews.md

### 5/5 — 👍

*2026-05-31*

다이빙하면서 사용해보았는데 전체적으로 편의성이 정말 좋았습니다. 처음 실행했을 때부터 화면 구성이 깔끔하고 복잡하지 않아서 필요한 기능을 바로 찾을 수 있었어요. 메뉴 이동도 직관적이라 처음 사용하는 사람도 크게 어렵지 않게 사용할 수 있을 것 같습니다.

특히 다이빙할 때 확인해야 하는 정보들이 한눈에 보기 쉽게 정리되어 있어서 좋았습니다. 
시인성도 좋아서 다이빙 중 도움이 많이 될 것 같다는 느낌을 받았어요.

로그 기록 기능도 만족스러웠습니다. 다이빙 후 기록을 남기고 다시 확인하는 과정이 편리하고 정리가 깔끔하게 되어 있어서 로그북 관리하기 좋았습니다. 

전체적으로 실제 다이버 입장에서 필요한 기능들이 잘 담겨 있다는 느낌이 들었고, 디테일도 신경 써서 만든 앱이라는 인상을 받았습니다.

### 5/5 — 다이빙 컴퓨터로는 최고에요!

*2026-05-30*

오셔닉만 사용하다가 이거 처음 써보는데
가격도 저렴하고 워치에서 다이빙 인터페이스를 바꿀수있는게 신기합니다..!

인터페이스 변경이 조금 더 자유로우면 더 좋을거같아요

## Frequently asked questions about DiveCore

### What devices does DiveCore support?

DiveCore is designed for the Apple Watch Ultra (1st gen or later) and requires an iPhone with iOS 18+ for its companion app. An iCloud account and Apple Sign-In are also necessary.

### How does DiveCore analyze my dives?

DiveCore uses on-device AI to provide a dive score (0-100) based on Safety, Efficiency, Consistency, Condition, and Depth Management. It also offers a real-time Risk Index with automatic stress-zone detection.

### Can I track my dive route with DiveCore?

Yes, DiveCore estimates your underwater path using sensor fusion (compass, gyro, accelerometer, depth) and captures GPS at entry/exit. The iPhone app provides a 3D visualization and playback of your estimated dive route.

### What are the subscription options for DiveCore Pro?

DiveCore Pro offers monthly and yearly subscription plans. The monthly plan is $4.99/P1M, and the yearly plan is $29.99/P1Y, which includes a 7-day free trial.

### Does DiveCore have ads?

No, DiveCore does not contain advertisements. The app is free to download and use, with optional in-app purchases for advanced features through DiveCore Pro.

### How often is DiveCore updated?

The latest version of DiveCore is 1.1.1, last updated on 2026-06-06. Updates typically include new features, bug fixes, and performance improvements.

### Is DiveCore suitable for beginners?

DiveCore is an assistance tool and requires certified divers trained by qualified instructors. It should not be relied upon solely, and users should always dive with a buddy and follow conservative profiles.

### What dive data does DiveCore automatically record?

DiveCore automatically records water temperature, gas mix, SAC, tank pressure, decompression algorithm used, and no-fly time. It also syncs dive logs via iCloud.

## Version history (last 5 releases)

### 1.1.5 — 2026-09-04

- No-fly time now follows the DAN/UHMS guideline exactly: 12 h after a single no-decompression dive, 18 h after multiple dives per day or multi-day diving, 24 h after a decompression dive — fixes repetitive-dive no-fly times that were shown far longer than the guideline
- Rebuilt Dive Planner on the PADI Recreational Dive Planner (RDP): no-deco limits and pressure groups, repetitive dives (surface interval → residual nitrogen → adjusted no-deco limit), nitrox via Equivalent Air Depth, and RDP safety-stop / minimum-surface-interval / emergency-decompression rules — plan with the same numbers you were trained on
- On Apple Watch, a first-launch prompt lets you allow Health, Motion & Fitness, and Location ahead of time — no more permission sheets appearing under Water Lock during a dive
- The depth graph in iPhone dive details now shows the surface (0 m) at the top and deeper below, matching the Watch and the share card; the water-temperature line now lines up with its scale
- Planner sliders: scrolling that starts on a slider no longer jumps the value, and a tap sets the value directly

### 1.1.4 — 2026-07-09

afety and reliability improvements throughout:
• Critical ascent-rate and ceiling alarms stay clearly visible on screen — even during a safety stop.
• Improved safety-stop and decompression guidance with a more accurate ascent-rate readout.
• More reliable sync of your gas mix, gradient factors and settings between Apple Watch and iPhone.
• Dive logs now always record the exact configuration each dive actually ran with.
• More robust recovery after sensor loss or an underwater restart — your dive keeps computing.
• Clearer no-fly guidance (DAN/UHMS: 12 h minimum, 24 h recommended before flying).
• Consistent depth-limit and backup-computer reminders in all 14 languages.
• Many stability and battery optimizations.

Always dive within your training and carry a backup dive computer.

### 1.1.3 — 2026-06-19

v1.1.3 Update

  - Much more reliable iCloud backup & restore, now resilient on weak connections (e.g. out at sea) — if the connection drops, your logs are saved on the device and back up
  automatically once you're back online, and you can keep using the app while it backs up
  - The depth readout on the underwater screen now updates sub-second, smoothly and instantly
  - Improved depth-tracking accuracy through the shallow-to-deep transition
  - Strengthened safety alerts (including oxygen partial pressure / ppO2) and more conservative decompression
  - Dives now start reliably even on a slow descent or a brief hover
  - If your watch restarts mid-dive, your dive resumes seamlessly instead of ending
  - Stronger AI photo & video enhancement in Studio — more accurate automatic underwater color restoration, natural dehaze, improved upscaling, and consistent color correction
  across video
  - Add and edit notes and a buddy on a dive log after the dive
  - Many stability and UI improvements — tank labels, dive-report generation, video export status, No-Fly Live Activity, settings sync, and more

### 1.1.2 — 2026-06-16

v1.1.2 Update

  - More reliable iCloud backup and restore — your dive logs restore safely even after switching to a new device or reinstalling
  - The depth readout on the underwater screen now updates sub-second, smoothly and instantly
  - Improved depth-tracking accuracy through the shallow-to-deep transition
  - Strengthened safety alerts (including oxygen partial pressure / ppO2) and made decompression calculations more conservative
  - If your watch restarts mid-dive, your dive now resumes seamlessly instead of ending
  - Add and edit notes and a buddy on a dive log after the dive
  - Overall stability, HealthKit/location handling, and localization refinements

### 1.1.1 — 2026-06-06

v1.1 Update

- Screen stays on underwater: Water Lock now turns on automatically when you submerge, keeping the display on regardless of your Always-On setting
- New first-launch onboarding with a safety briefing and a quick guide to starting a dive
- Redesigned decompression display: a DECO badge next to your depth, plus separate NEXT STOP, STOP TIME, and TOTAL TTS for clarity
- Ascent rate now shown accurately in m/min, with improved safety-stop indication
- Deco violations now show a non-blocking warning instead of a 24-hour lockout (fixes a pop-up that could block the screen underwater)
- Safer default conservatism (Gradient Factors 40/80)
- Honest tank card: clearly indicates when no transmitter is connected
- Improved 3D underwater route visibility and smoother depth/compass readouts
- Fixed NDL sometimes showing infinite, and dive logs / max depth not appearing after a dive
- Start a dive directly with the Action Button
- General stability and UI improvements

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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 2026-09-06.*