ShalloWeDive

New: guided breath-hold tables on your iPhone — spoken cues, your own announcement points, every session recorded. Still no subscription, no account.

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, paired with an iPhone companion for your dive logbook and dry-land breath-hold training. Whether you're snorkeling, freediving, spearfishing, rehearsing a mermaid set, or just playing in the ocean, 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 — from safe (teal) through caution (yellow) to danger (orange) — so you always know where you are at a glance, without looking away from the water.

New: Train Your Breath-Hold — On Dry Land The iPhone companion now 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 — add your own announcement points, reorder them, and keep listening with the phone locked
• Every session is recorded, round by round, in your training history Training is designed for dry land only. Never practice breath-holds in water alone.

Dive Under Your Own Discipline Breath-hold disciplines don't share a shape, so they don't share one set of rules. Choose yours before the session, and the watch applies the timing that belongs to it:

• Freedive — one deliberate descent per surfacing, with a surface rest timer between dives
• Mermaid — a rehearsal set of many short, shallow immersions inside a fixed window Set your rehearsal window and your targets for depth, bottom time, and dive count, and the watch tells you when the window is over.

On Your Watch

• Real-time depth and water temperature from the built-in depth sensor
• Heart rate monitoring during every dive
• Your choice of alert style — Rapid or Deep haptics — applied to every dive alert
• Freediving-standard surface rest timer between dives
• Multi-dive session tracking with automatic dive counting
• Descent and ascent time analysis for each dive
• A dive logbook on your watch, saved between sessions
• Look back at earlier dives during a multi-dive session, without ending it

The iPhone Companion Review your whole logbook on a bigger screen and make each dive count:

• Dives group into outings, with search by site, buddy, tag, or note
• Add the dive site, buddy, gear, notes, and a personal rating
• Browse years of dives with smooth paging — at home, on the big screen
• Dives sync from your watch automatically, with a manual "Sync all to phone" whenever you want

Your watch and iPhone connect directly, on-device — no account, no server, and your logbook never leaves your devices.

Beyond the Measurement Range The depth sensor is built for shallow water down to about 6 meters. If you choose to dive past that range, "No Limit" mode silences the depth alerts, and the watch shows a calm "beyond range" readout instead of a false alarm — honest feedback, never noise.

Private by Design All data stays on your devices. No account. No server. No tracking. No ads.

Requires an Apple Watch with a depth sensor (Ultra, Ultra 2, Series 10, or later) for diving. Breath-hold training runs on any iPhone — no watch required. The two sync directly, with no internet connection needed.

ShalloWeDive is a reference tool for shallow water activities. It does not replace certified diving equipment, proper training, or safe diving practices. Always dive within your personal limits.