Precision instruments for serious divers.

Tools for Divers makes professional diving software. Each app does one thing with total accuracy — verified against published standards, built for the field, and owned entirely by you.

Dalton gas calculator showing seven professional dive tools Slate dive logbook dashboard showing career stats and trends
Slate app icon

Slate

Professional dive logbook for iPhone. BLE import from Shearwater, Suunto, Mares, Oceanic, and more. Career dashboard, depth profiles, full UDDF export. Six languages. No account required.

Download on the App Store
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Slate dashboard with career stats Slate dive detail with depth profile
Dalton app icon

Dalton

Gas calculator for air, nitrox, and trimix. Seven tools covering MOD, EAD, END, best mix, gas density, return rules, and SAC-based bottom time. Every formula shows its work. iOS and Android.

Download on the App Store Get it on Google Play
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Dalton seven-tool grid Dalton multi-gas dive profile advisor

Built like dive gear.

Inspectable

Every calculation publishes its formula and cites its source. Cross-referenced against PADI and TDI tables. You can verify it yourself.

Private by Design

No account. No telemetry. No cloud dependency. Your data stays on your device. Export is always free and unrestricted.

Purpose-Built

One app, one job, total coverage. Six languages with verified technical terminology. Professional instruments for divers who treat their software like equipment.