Comparison

DiveCore vs Depth.

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DiveCore

This app transforms your Apple Watch Ultra into a professional dive computer. It uses on-device AI to analyze your dives, providing insights into safety, efficiency, and consistency. Features include real-time decompression modeling, estimated dive routes, and a no-fly timer.

Highlights
  • 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
Features
Read full description

DiveCore — A real dive computer for Apple Watch Ultra DiveCore harnesses your Apple Watch Ultra's water-resistant depth sensor, compass, and accelerometer to give divers everything they need right on their wrist. It pairs with the iPhone companion app in real time and uses on-device AI to help you improve your dive patterns. [ Core Features ] Dive Computer (Apple Watch Ultra) - Bühlmann ZHL-16C with adjustable Gradient Factors - Real-time 16-tissue compartment decompression model - No-decompression limit (NDL) and decompression ceiling - Automatic safety stop countdown (3 min @ 3-6 m) - Ascent rate alarm + haptic warnings - PPO2 oxygen limit alarm - Auto water lock - HealthKit workout session integration - 30Hz smooth digital compass Freediving Mode - Depth disciplines (CWT / CWTB / FIM), static apnea (STA), dynamic apnea (DYN / DNF) - Automatic dive detection for depth, manual timer with lap entry for pool disciplines - Dive count, max depth, surface interval, heart rate, and a per-session log - A session spans many dives: surfacing starts the rest timer, and you end the session yourself - Freedive mode runs no decompression model and no gas or NDL alarms - It cannot detect shallow-water blackout. Never freedive alone, and always dive with direct, trained supervision Estimated Dive Route - Surface GPS captured at entry and exit - Underwater path estimated from compass + gyro + accelerometer + depth changes - End-of-dive drift correction using exit GPS - 3D visualization on iPhone (depth profile walls, drag-to-rotate, pinch-to-zoom) - Insights: average speed, activity level, exploration pattern, current drift estimation This is not real underwater GPS tracking. It is a sensor-fusion estimate based on the diver's magnetic heading and motion, with both endpoints corrected by surface GPS fixes. No-Fly Timer (Live Activity) - DAN/UHMS guideline tiers (12h single no-deco / 18h repetitive or multi-day / 24h decompression), never shortened by a later dive - Lock-screen + Dynamic Island countdown AI Analysis (XAI — Explainable) - 100% on-device, no external API calls - Dive score (0-100) with breakdown (Safety, Efficiency, Consistency, Condition, Depth Management) - Real-time Risk Index and automatic stress zone detection - Personal baseline learning Dive Log + Share - iCloud automatic sync across devices - Auto-recorded: water temp, gas mix, SAC, tank pressure, algorithm, no-fly time - Infographic share card, 1080x1350 - Entry/exit coordinates open in Apple Maps DiveCore Studio (Photo Editor) - Underwater color correction, depth-based red channel restoration, AI dehaze - Dive log watermark Watch Display Customization - 6 readability-tested color presets - 3 configurable bottom-card slots and MAX ring field selection iPhone Companion - Detailed dive log with depth profile chart - PADI RDP dive planner, AI report, dive site location, statistics, iCloud backup [ Required Hardware ] - Apple Watch Ultra (1st generation or later) - iPhone with iOS 18+ - iCloud account + Apple Sign-In [ Accessibility ] - VoiceOver support and Dynamic Type - 14 languages [ Subscription Terms ] - DiveCore Pro (choose one; all unlock the full feature set): - Yearly: $29.99/year (KRW 44,000) - includes a 7-day free trial for new subscribers - Monthly: $4.99/month (KRW 7,700) - no free trial - 1-Day Pass: $2.99 (KRW 3,300) - 24-hour access, non-renewing (does not auto-renew) - Local currency may apply; prices are set per storefront. - Payment is charged to your Apple ID account at confirmation of purchase - Yearly and Monthly auto-renew unless cancelled at least 24 hours before the end of the current period - If not cancelled at least 24 hours before the trial ends, you will be charged automatically - Manage or cancel your subscription anytime in your device's App Store account settings - Terms of Use (EULA): https://furyus.dev/terms

About

Depth.

Features
Read full description

Depth. is your dive log for iPhone. Simple, fast and beautiful. LOG EVERY DIVE Location, depth, dive time, water temperature, visibility, equipment, weights and buddy all in one place. Dives are automatically saved to your account. MARINE SPECIES Save species you encounter during your dive. Depth. has an extensive catalog with photos and information about fish, coral and other underwater animals. BUDDY SYSTEM Send a dive directly to your buddy via their Depth ID. They will see your log appear in their timeline. AI ASSISTANT Ask questions about diving techniques, species or your equipment. The built-in AI assistant will help you further. EXPORT Download all your dives as JSON, CSV or XML compatible with other logbooks. IMPORT Do you dive via Diviac? Import all your existing dives with one tap. DESIGNED FOR DIVERS No subscriptions. No ads. Just a clean, quick logbook that you always have with you.

Screenshots

DiveCore4 screens
Depth.4 screens

Verdict

The call

The clearest difference is in-app purchases: Depth. at none against DiveCore's 3. Depth. also leads on iOS requirement (16.0 vs 18.0). DiveCore's advantage is update cadence (every 6 days vs every 5 weeks). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DiveCore sells 3 in-app purchases, starting at $4.99 per month. Depth. asks for nothing beyond the download.

UpkeepUpdate frequency

DiveCore ships an update every 6 days, Depth. every 5 weeks. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 5 level
DiveCore versus Depth.: the parameters behind the verdict, then further details
ParameterDiveCoreDepth.
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 6 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS18.016.0 — better
Further details — not scored
Size18 MB2 MB
Age rating12+4+
Developerjuseong kimJosephus Fransiscus Zegers

In-app purchases

3 purchases

DiveCore

Subscriptions2
  • DiveCore Pro (Monthly)$4.991 Month
  • DiveCore Pro (Yearly)7 Days trial$29.991 Year
One-time1
  • DiveCore Pro 1-Day Pass$2.99
None

Depth.

No in-app purchases

Questions

Is DiveCore free?
DiveCore is free to download, with in-app purchases available.
Is Depth. free?
Depth. is free to download, with no in-app purchases.
Do DiveCore or Depth. have ads?
Neither DiveCore nor Depth. shows ads.
Which is updated more often, DiveCore or Depth.?
DiveCore ships an update every 6 days, and Depth. every 5 weeks. Most recently, DiveCore was updated on September 21, 2026 and Depth. on September 9, 2026.

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