CaptainCalc: Marine Navigator

AlazSmartSystems

In-app purchases

About this app

CaptainCalc is the maritime toolkit built for ship captains, deck officers, and professional seafarers who need reliable tools at sea.

Whether you're working through celestial navigation calculations, checking vessel stability, planning a voyage, or running quick nautical calculations, CaptainCalc brings everything together in one focused maritime app.

★ CELESTIAL NAVIGATION
Calculate sun, moon, and star sights with precision. CaptainCalc provides celestial navigation tools designed for practical use aboard ship — no internet required.

★ SHIP STABILITY TOOLS
Access stability calculations and operational tools that support your daily stability workflow. Built for deck officers and captains managing vessel stability at sea.

★ VOYAGE PLANNING
Plan and organize voyages with dedicated voyage planning tools. Track progress, log key data, and keep your passage plan accessible throughout the journey.

★ NAUTICAL CALCULATORS
Fast marine calculators covering the most common computations seafarers need onboard. Save time and reduce manual calculation errors.

★ GPS TRACKING & POSITION
GPS-based position tracking to support situational awareness at sea. Monitor your position and log location data directly within the app.

★ ONBOARD RECORDS & LOGS
Keep operational records, history logs, and reference data organized and accessible. Ideal for captains and officers maintaining daily records aboard ship.

Built for professional maritime use:
• Ship captains and vessel commanders
• Deck officers and navigation officers
• Maritime cadets and nautical students
• Professional seafarers needing reliable onboard tools

CaptainCalc is designed to work under operational pressure — clear, fast, and focused on what matters at sea. No bloat, no distractions. Just the maritime tools you need, when you need them.

Subscription & Free Access:
Core features are available on the free tier. Advanced maritime tools may require a subscription. Free trials available through Google Play for eligible users.

Offline Use:
CaptainCalc is built for life at sea. Core tools work without an internet connection, so you can rely on the app even when connectivity is limited offshore.

Important:
CaptainCalc is designed to assist professional maritime work. It is not a substitute for certified navigation procedures, official onboard documentation, company instructions, or applicable regulations. Users remain responsible for all operational decisions.

What’s new

Improved export safety for audit and record CSV files. Refined Quick Calculator card layout, polished Settings text, and reduced small UI startup delays. Includes stability and reliability improvements for a smoother CaptainCalc experience.