Below vs DiveCore

10,000+ curated dive sites, universal Bluetooth dive logging, and a growing marine-life catalog. Your dive log stays on your device. YOUR DIVE LOG Log every dive with full detail: depth, duration, temperature, gas mixes, SAC rate, visibility, conditions, photos, and notes. Import directly from your dive computer, or enter manually. On iOS 26 you can scan paper logbooks with the camera and import years of past dives in one pass. WORKS WITH 100+ COMPUTERS Bluetooth sync with Shearwater, Suunto, Oceanic, Mares, Aqualung, Scubapro, and 100+ other models via libdivecomputer. Garmin FIT files and Apple Watch dives are supported too. Migrating from MacDive or Subsurface? Below imports your history. BELOW PASSPORT Your diving, in one place: the countries you've dived in, your dive count and the year you started, your deepest dive and total bottom time. Photograph your certification cards front and back and keep them with you. DIVE SITES Browse and search 10,000+ curated dive sites worldwide — from the Great Barrier Reef to your local quarry. Each site has a written brief, depth range, water type, typical visibility, and the species you're likely to encounter. Available in 15 locales before you get in the water. SPECIES HUB A growing catalog of marine life — fish, sharks, rays, turtles, and 431 corals — with illustrations and identification tips. Tap a species in a site brief to jump straight to its profile. Keep field notes on what you've spotted and what you're still chasing. FISH ID GAME (free) A free study game for learning reef fish names and families. Flash-card and comparison rounds in three difficulties, with regional curricula. No paywall, no session limit, no account. YOUR GEAR Build kits from the gear you dive, store serial numbers, and let Below match equipment to the dives it made. Record purchase dates and service intervals for every piece. OFFLINE-FIRST Your dive log lives on your device. No internet required to review dives, stats, or cached site data. Sync between your own devices with iCloud, or leave it off. YOUR DATA UDDF, CSV, PDF, and Subsurface XML export — free. No account required. No lock-in. COLLECTIONS Group sites for upcoming trips. Save favorites, add notes, stay organized. BELOW UNLIMITED · US$19.99/year (or local price) Unlock the full depth profile chart for every dive — depth over time, gas switches, NDL, ceiling data, SAC rate, and deco analysis. Plus the full analytics deck: SAC Rate, SAC by Depth, SAC by Experience, Dives per Year, Dive Duration, Cumulative Bottom Time, Dive Lens, Conditions, Countries & Places, Marine Life, and Records & Milestones — each readable as records, spread, or trends, and scopeable to any year. Offline map downloads, unlimited gear and kits, and service history are included. Terms of Use: https://below.app/terms Privacy Policy: https://below.app/privacy

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 - Auto-recorded: water temp, gas mix, SAC, tank pressure, algorithm, no-fly time - 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.