Can the app read data from my dive computer?

Not in version one, and you should not try. Dive computers use proprietary Bluetooth protocols that differ per manufacturer, and reverse-engineering even one is a project on its own. Build excellent manual entry first — most divers transcribe from the computer screen anyway — and only look at imports once people are actually using it.

Is a digital dive log accepted for certification courses?

Most agencies accept a printed log with an instructor signature, which is why the PDF export and the on-screen signature field matter more than any other feature. Check the requirements of the agencies your users train with before promising anything, and keep the export layout close to the familiar paper format.

How to Build a Scuba Dive Log App with AI (2026)

What a scuba dive log app needs

Dive entries with depth, duration, and surface interval
Gas mix, weights, exposure suit, and equipment notes
Dive sites with map location and conditions history
Certification and equipment service reminders
Export a signed log as PDF for course sign-off

The screens

Screen	What it does
Logbook	Dives newest first with number, site, depth, and date
Log a Dive	Depth, time in and out, gas, weights, visibility, notes
Dive Detail	Full profile, conditions, buddy, and signature field
Sites	Saved sites with past dives and typical conditions
Profile	Certifications, total dives, equipment service dates

The data model

Dive: number, siteId, date, maxDepth, bottomTime, surfaceInterval, gasMix, weights, visibility, notes
Site: name, latitude, longitude, waterType, typicalDepth
Buddy: name, certLevel, signatureImage
Certification: agency, level, number, dateIssued
Equipment: type, serialNumber, lastServicedAt

The build prompt (copy this)

Paste this into ShipNative and it becomes a working React Native app with these screens, navigable in a live preview, in about two minutes:

“A scuba dive logbook. Divers log each dive with site, date, max depth, bottom time, surface interval, gas mix, weights, exposure suit, visibility, and free-text notes, and the app numbers dives automatically. A Sites screen saves dive sites with a map location and shows every past dive there with typical conditions. A dive detail screen holds a buddy name and a signature captured on screen for course sign-off, and can export the log as a PDF. Profile tracks certifications and equipment service dates with reminders. Screens: Logbook, Log a Dive, Dive Detail, Sites, Profile. Must work fully offline — dive boats have no signal.”

Then iterate with small, screen-specific prompts (“make the primary button bigger”, “add an empty state”), preview on your own phone, and export the full Expo project whenever you want. The full method: how to build an app with AI.

How it makes money

One-time unlock ($10-20) for PDF export and unlimited dives fits the audience better than a subscription — divers already own expensive gear and resent recurring fees for their own records. Be honest about the ceiling: this is a hobby-scale market, and dive computers already sync to their manufacturers apps, so your wedge is manual logging that is not locked to one brand of computer.

Implementation and the revenue math for every model: how to make money from an app. When you’re ready to ship: App Store and Google Play publishing guides.

Build it now

The prompt above is free to run at shipnative.dev — working scuba dive log app on your phone today, full code export, no credit card.

How to Build a Scuba Dive Log App with AI