Comparison

DiveCore vs DWZ

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 - Technical bottom bar: choose what it shows, including heading (HDG) - Minimal: 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

DWZ

This app facilitates classic chess matches between club players in Germany. Challenge opponents, schedule games, and digitally report results to track your progress. Improve your DWZ rating without attending tournaments.

Highlights
  • Challenge club players
  • Schedule matches
  • Digital result reporting
  • Track game progress
  • Improve DWZ rating
  • No tournament participation needed
Read full description

DWZ-Match ist die App für klassische Schachpartien zwischen Vereinsspielern in Deutschland. Du forderst andere Spieler direkt heraus, vereinbarst ein Match, meldest Ergebnisse digital und behältst den gesamten Ablauf bis zur Einreichung klar im Blick. Verbessere so deine DWZ, ohne an Turnieren teilzunehmen.

Screenshots

DiveCore4 screens
DWZ4 screens

Verdict

The call

The clearest difference is in-app purchases: DWZ at none against DiveCore's 3. DWZ also leads on iOS requirement (16.0 vs 18.0). DiveCore's advantage is update cadence (every 4 days vs every 3 weeks). On price, review sentiment, ads and monetization model 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. DWZ asks for nothing beyond the download.

UpkeepUpdate frequency

DiveCore ships an update every 4 days, DWZ every 3 weeks. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

Scorecard3 real differences · 5 level
DiveCore versus DWZ: the parameters behind the verdict, then further details
ParameterDiveCoreDWZ
PriceFreeFree
Positive reviews100.0% of reviews100.0% of reviews
Update frequencyEvery 4 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS18.016.0 — better
Further details — not scored
Size23 MB89 MB
Age rating12+4+
Developerjuseong kimDWZ-Match UG (haftungsbeschränkt)

Customer experience

DiveCore

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DWZ

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

DWZ

No in-app purchases

Questions

Is DiveCore free?
DiveCore is free to download, with in-app purchases available.
Is DWZ free?
DWZ is free to download, with no in-app purchases.
Do DiveCore or DWZ have ads?
Neither DiveCore nor DWZ shows ads.
Which is updated more often, DiveCore or DWZ?
DiveCore ships an update every 4 days, and DWZ every 3 weeks. Most recently, DiveCore was updated on October 8, 2026 and DWZ on October 2, 2026.

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