Work · alternatives · 2026

24 alternatives to CaptainCalc

Offline maritime calculators for ship operations

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Skipper▲65

   Marine Logbook for Sailing and Boating (iOS app)

   2014 · apps.apple.com · its alternatives →

2. 2
   Captain▲191

   A Docker menu bar app for Mac

   2017 · getcaptain.co · its alternatives →

3. 3
   Nautical Calculator▲70

   Solve many of the marine navigation equations & conversions

   2021 · play.google.com · its alternatives →

4. 4
   TechniCalc▲66

   A smart calculator for a smart phone

   2020 · jacobdoescode.com · its alternatives →

5. 5
   MarineTraffic Voyage Planner▲4

   Voyage Planner is a tool for sea route distance calculation

   2016 · marinetraffic.com · its alternatives →

6. 6
   get-aboard▲142

   Convert your onboarding process into interactive roadmaps

   2024 · its alternatives →

7. 7FT
   For the boaters among us, my small company made an iOS app▲65

   2013 · tryskipper.com · its alternatives →

8. 8
   Ship▲96

   Fast, native issue tracking for software projects

   2016 · realartists.com · its alternatives →

9. 9
   skipperr.io▲86

   Maritime hiring platform connecting talents

   2024 · its alternatives →

10. 10
    Captain▲17

    Navigate knowledge at scale - an Agentic alternative to RAG

    2025 · captain.dev · its alternatives →

11. 11
    MarineTraffic▲7

    Very cool ship tracking app

    2016 · marinetraffic.com · its alternatives →

12. 12
    ShipSync▲7

    AI-powered daily standups from your code diffs & tickets

    Dec 2025 · shipsync.dev · its alternatives →

13. 13
    Vessel Task▲12

    Streamline your marine business, simplify your life.

    2025 · vesseltask.com · its alternatives →

14. 14
    PhotographyCalc▲11

    All in one mobile photography tool

    2020 · apps.apple.com · its alternatives →

15. 15
    ‎ToolsDeck - Utility Toolkit▲7

    Tools,Converter,QR,Pomodoro Timers,Password,Health,Unit,File

    Nov 2025 · apps.apple.com · its alternatives →

16. 16
    HelmOps▲2

    Yacht operations platform for captains & owners.Offline + AI

    Jun 2026 · helmops.com · its alternatives →

17. 17
    Sail and Signal▲13

    Practice navigation rules like a pro and track your progress

    2025 · sailandsignal.com · its alternatives →

18. 18
    LineCalc▲7

    Free online calculator with real-time collaboration

    Dec 2025 · linecalc.com · its alternatives →

19. 19
    360Cruising▲6

    AI cruise advisor with 15 line-specific expert advisors

    Jun 2026 · 360cruising.com · its alternatives →

20. 20
    BuildCalc Hub▲4

    Free construction calculators for contractors and DIYers

    Jun 2026 · thebuildcalchub.com · its alternatives →

21. 21
    Shipbot.io▲15

    Deployment communication for engineering teams.

    2025 · its alternatives →

22. 22
    BuildCalc▲1

    A smart tool to calculate construction materials in seconds

    Jun 2026 · buildcalc-dugt.vercel.app · its alternatives →

23. 23
    LetUsCalc▲3

    Free developer, logistics, and self-employment calculators

    Jun 2026 · letuscalc.com · its alternatives →

24. 24
    StructCalc▲6

    StructCalc: Simplify construction with smart calculations.

    2024 · play.google.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →