ScubaPlan vs ShalloWeDive

ScubaPlan – Your diving logbook and community Take your dives to the next level with ScubaPlan, the ultimate app to plan, log and manage your dives in a safe and professional way. Designed by and for divers of all levels, ScubaPlan simplifies your pre-dive preparation by offering precise calculations, smart features, and everything you need to dive with confidence. [On your iPhone] · Edit and share photos and videos of your dives with the ScubaPlan community. · Plan your dives with accurate calculations for Air, Nitrox, or Trimix (MOD, EAD, PPO2...). · Import your dives from dive computers by brands like CRESSI, MARES, SUUNTO, and more. · Manage your gear and create custom gear sets for different types of dives. · Calculate your ideal weight based on body type, experience, and equipment. · Add locations to your dives manually or at the time of planning (no background tracking). · Check current weather conditions for more accurate dive planning. · Sign in with Apple anonymously, without sharing your email or personal data. · Sync your data across Apple devices with end-to-end encryption: only you hold the key. · Suggest or vote for new features directly within the app. [On your Apple Watch Ultra] We’re working on getting the official permission to access depth sensors up to 40 m on Apple Watch Ultra. For now, the app works up to 6 m depth. · Use ScubaPlan as a backup dive computer. · Log your dives with key data like duration, max depth, temperature, and charts. · Monitor your 3-minute safety stop at 5 meters. · Use the built-in compass throughout your dive. · Get planned depth alerts (not available due to sensor restrictions). ScubaPlan is completely free for all divers! Enjoy unlimited dive plans, share your underwater photos in the community, and import your dives from popular dive computers like Cressi — all at no cost. If you find ScubaPlan valuable, you can support its development through voluntary contributions to help us keep it private, independent, and built for divers like you. Privacy Policy: https://www.arturocarreterocalvo.com/scubaplan/scubaplan-privacy-policy-en.html Terms of Use: https://www.arturocarreterocalvo.com/scubaplan/scubaplan-terms-en.html

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.