DiveCore vs ShalloWeDive

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

Track your depth at a glance — right on your wrist, right underwater. ShalloWeDive is a real-time depth tracker built for shallow water — down to about 6 meters — using the Apple Watch depth sensor, with an iPhone companion for your dive logbook and dry-land breath-hold training. Snorkeling, freediving, spearfishing, or a mermaid set: see your depth, water temperature, heart rate, and dive time the moment you go under. No phone signal, no internet, no subscription — just your wrist and the water. Color-coded safety zones change as you descend — safe (teal), caution (yellow), danger (orange) — so you always know where you are without looking away from the water. How Far You Actually Swam Dynamic apnea is scored in distance, yet no dive computer measures it. Now your wrist does: the wall turns of a pool swim are counted from the watch's motion, and the rest screen shows the swim's distance — turns times the pool length plus the last partial length — marked "~" as the estimate it is. Correct it on your phone; the original stays beside your correction. The Clocks a Dive Computer Has — On Your Wrist, and Your Buddy's Static, dynamic, tables, interval, stopwatch and surface interval, all on the watch, all staying lit through Water Lock and wrist-down: - Static: taps before, at and after your target; the hold starts when your wrist goes under and ends on the Action button — or when your wrist comes out - Dynamic: the swim ends when you surface and the rest counts from that instant — shrinking-rest CO₂ sets or fixed-interval departures - Your phone's tables, run in the water: each hold a target, each rest from the moment you came up - As breath-holder or buddy: one program, timed by the water on one wrist and by a tap on the other; the phone shows both records side by side Breath-hold in water is done only with a trained buddy watching, never alone. Train Your Breath-Hold — On Dry Land The iPhone companion also coaches classic apnea tables, no watch required: - CO₂ table, O₂ table, or a single static hold — or build a table of your own - Every round runs a recovery first, then the hold, so you always start rested - Voice announcements pace each phase, even with the phone locked - Every session is recorded, round by round Dive Under Your Own Discipline Choose your discipline before the session and the watch applies its timing: Freedive — one deliberate descent per surfacing, with a surface rest timer between dives; Mermaid — a rehearsal set of short, shallow immersions inside a fixed window, with targets for depth, bottom time, and dive count. On Your Watch - Real-time depth and water temperature from the built-in depth sensor - Heart rate monitoring during every dive - Multi-dive session tracking with automatic dive counting - Descent and ascent times for every dive within the sensor's range - A dive logbook on your watch, saved between sessions The iPhone Companion Review your whole logbook on a bigger screen: - Dives group into outings, with search by site, buddy, tag, or note - Add the dive site, buddy, gear, notes, and a personal rating - Dives sync from your watch automatically — or all at once, on demand Your watch and iPhone connect directly, on-device — no account, no server, and your logbook leaves only when you share it. Beyond the Measurement Range The depth sensor is built for about 6 meters. Past that, "No Limit" mode silences the depth alerts and shows a calm "beyond range" readout — and the logbook records the dive honestly as "6 m+", with no invented maximum or split. Private by Design All data stays on your devices. No account. No server. No tracking. No ads. Diving requires an Apple Watch with a depth sensor (Ultra, Ultra 2, Series 10, or later); breath-hold training runs on any iPhone. The two sync directly, no internet needed. ShalloWeDive is a reference tool. It does not replace certified equipment, proper training, or safe diving practices. Always dive within your personal limits.