DiveCore vs ShalloWeDive

DiveCore — Dive Computer for Apple Watch Ultra DiveCore uses your Apple Watch Ultra's depth sensor, compass, and accelerometer to show your dive on your wrist. It syncs with the iPhone companion app and uses on-device AI to help you review your dives. [ 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, credited with shallow deco stop time) - 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 at entry and exit; underwater path estimated from compass, motion and depth, then drift-corrected with the exit fix - 3D route view on iPhone with insights (speed, activity, pattern, current drift) 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 itemized breakdown, stress zones and personal baseline Dive Log + Share - iCloud automatic sync across devices - Logs water temp, gas mix, algorithm, no-fly time; SAC and end pressure are estimated - Infographic share card; entry/exit points 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 (incl. heading), Minimal card slots and MAX ring field 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) - Prices may vary by storefront and currency. - 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 - Privacy Policy: https://furyus.dev/privacy IMPORTANT SAFETY INFORMATION DiveCore is a supplementary tool for trained, certified divers. It is not a replacement 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.

The freediver's logbook that listens, draws and remembers. On your wrist and your iPhone. ShalloWeDive turns an Apple Watch with a depth sensor into a freediver's dive computer for shallow water: live depth, water temperature, heart rate and dive time down to about 6 meters, no phone and no signal needed. And it turns your iPhone into the logbook a dive computer's app would give you: every dive drawn second by second, every day told in your own words. YOUR DAY, WRITTEN UP BY AN AI THAT SPEAKS FREEDIVING Tell the day's page how it went, the way you would tell a buddy. An AI tuned for freedivers writes your words into a clean record: site, buddy, weights, visibility, what you worked on. It understands the words of the sport as you mean them (CWT, FIM, DYN, equalisation, surface interval), asks one more question when something is missing, polishes a version you can post, and never makes things up: nothing you did not say goes into your logbook. Edit the record whenever you like. Launch promotion: three write-ups a day, free of charge, for as long as the promotion runs. No recording leaves your iPhone. EVERY DIVE, DRAWN The watch records each dive second by second and the phone draws it: the depth curve, descent and ascent speed, water temperature, time spent at the bottom, mean depth. A session page opens on the day's picture, its highlights, its figures and its dives numbered, the way a dive computer's app opens a session. When the watch had to restart mid-session, the day still reads as one; split it if you disagree. BEYOND 6 METERS, NOTHING IS MADE UP The wrist sensor reads to about 6 meters, and a deeper dive is logged as exactly that: "6 m+". Import the log of your dive computer and its deeper reading joins the same dive: the curve past 6 meters, the real maximum, the map of where you went in, always named as that instrument's. SHARE IT, EXPORT IT, KEEP IT - A dive card to post: number, depth, time and the curve as one image - A PDF logbook with every dive's picture, CSV for a spreadsheet, UDDF for other logbook apps, a full JSON backup - An optional cloud logbook with Sign in with Apple: the same records on every iPhone, safe when you replace one A DIVE COMPUTER ON YOUR WRIST - Depth, temperature and heart rate live, color-coded from teal to orange as you go deeper - Dive counting, descent and ascent times, a surface rest timer, depth and time alarms - Freedive or mermaid sets, each with its own timing - The clocks: static, dynamic with the distance counted from your wall turns, tables, interval, stopwatch; worn as the breath-holder or as the buddy - Everything stays lit through Water Lock and wrist-down TRAIN YOUR BREATH-HOLD ON DRY LAND CO₂ tables, O₂ tables, static holds or a table of your own, with a recovery before every hold and voice cues even with the phone locked. YOUR COURSE SHEET Keep a certification course on your phone (AIDA, Molchanovs, PADI, SSI, CMAS or your own) and record results, attempts, pass dates and instructors as it goes. Link an item to the record that shows it, and when the app brings a newer version of your level, see what changed and apply only what you choose. PRIVATE BY DESIGN Your logbook stays on your devices unless you choose otherwise. Words go out only with your permission, the cloud logbook is off until you sign in, and the watch talks to no server. The app can send its own diagnostic record, never your logbook, only over Wi-Fi while charging, and you can turn it off. No tracking, no ads. Diving needs an Apple Watch with a depth sensor (Ultra, Ultra 2, Series 10 or later). Breath-hold training and the logbook run on any iPhone. Speaking about the day needs iOS 26 and a connection. Breath-hold in water only with a trained buddy watching, never alone. ShalloWeDive is a reference tool, not a replacement for certified equipment, proper training or safe diving practices. Always dive within your limits.