Best Cortex Onboard alternatives: apps like Cortex Onboard

6+ similar apps compared and reviewed

3.6 avg rating
6 free apps
Updated October 2026

Cortex Onboard is great, but it's not the only option. Explore 6+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to Cortex Onboard

Hooked: Anchor Alarm & Remote#1

Hooked: Anchor Alarm & Remote by Kylee Davis

GPS Anchor Watch & Drift Alert
4.8😊(67 ratings)
FreeIn-App Purchases
Hooked: Anchor Alarm & Remote screenshot 1
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This app acts as a digital anchor watch, monitoring your boat's position and alerting you if it drifts. It offers real-time tracking, remote control, and customization options for peace of mind while boating.

What We Love

  • πŸ‘ Easy to use
  • πŸ’‘ Remote monitoring is awesome
  • πŸš€ Improves reliability constantly
  • 🀝 Responsive developers
  • πŸ›°οΈ Seamless Apple device connection
  • ⏱️ Support resolved issues quickly
  • 🌟 Better than Anchor Pro
  • πŸ“‘ Shares anchoring position
  • πŸ—ΊοΈ Satellite view option
  • πŸ’― Best app purchase
  • 😴 Peace of mind
  • πŸ“± Remote monitoring with second device
  • πŸ”Œ Connects to boat electronics (NMEA)
  • πŸ”Š Loud alarm
  • 🎯 Accurate
  • ✨ Modern and responsive
  • πŸ“ˆ History of distance and bearing
  • ⚑ NMEA data display
  • βœ… Reliable
  • πŸ’― Best of its type
  • πŸ’° Worth paying for
  • 🌍 Sailing the world
  • πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ Divided household tech compatibility
  • πŸ‘ Great tool for cruisers
  • πŸ’― Exactly what was needed
  • βš“ Live aboard use
  • πŸ“² Easy transfer between devices
  • πŸ§‘β€πŸ« Sailing instructor use
  • πŸ§˜β€β™€οΈ Sleep easy at anchor
  • βœ… Simple and accurate
  • πŸ’‘ Clever and thoughtful
  • πŸš€ Keeps getting better
  • βš“ Must-have for overnight anchors
  • πŸ“² Easy to set alarm on phone, transfer to iPad
  • πŸ“‘ Streams boat info to phone
  • βš™οΈ Easy to configure settings
  • βœ… Works flawlessly
  • πŸ‘ Highly recommended
  • πŸ’― Best anchor alarm
  • 🌈 Color gradient on tracks
  • πŸ“ Ability to see where others have anchored
  • πŸ‘ Invaluable for alleviating stress
  • πŸš€ Fixed bugs quickly
  • πŸ’‘ Clean user interface
  • πŸ’° Free version useful
  • πŸ‘ Super impressed
  • πŸ‘ Great app BUT...
  • πŸ’― Best one out there
  • πŸ’‘ Innovative remote monitoring
  • βœ… Solves a real problem
  • πŸš€ Fast and easy
  • 🌟 Genius remote monitoring
  • 🀝 Great support
  • πŸ’‘ Pure genius
  • βœ… Peace of mind
  • πŸ‘ Great anchor monitor app
  • πŸ’― Best anchor alarm - peace of mind

Room to Improve

  • πŸ› Occasional GPS lock issues
  • πŸ› Some room for improvement
  • πŸ› Connection interruptions
  • πŸ› Lack of reliability
  • πŸ› False alarms
  • πŸ› GPS not updating on iPad
  • πŸ› Difficulty finding drop anchor button
  • πŸ› Needs alarm for GPS failure
  • πŸ› Remote monitoring only with same Apple ID
  • πŸ› Cannot form non-circular swing areas
  • πŸ› Needs graphics when no internet
  • πŸ› Needs cached graphics offline
4.0😞(383 ratings)
FreeIn-App Purchases
B&G: Companion App for Sailors screenshot 1
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This app provides sailors with advanced navigation tools, including detailed charts, route planning, weather forecasts, and marine traffic information. It can be used standalone or synced with compatible onboard electronics for a comprehensive on-water experience.

What We Love

  • πŸ’‘ Easy route planning
  • πŸš€ Useful charts
  • πŸ‘ Convenient app
  • πŸš€ Great for planning and mirroring to plotter
  • πŸ‘ Intuitive interface
  • πŸš€ Excellent charts and auto-routing

Room to Improve

  • πŸ› Crashes frequently
  • πŸ› Buggy, unreliable connection to plotter
  • πŸ› Routes disappear or get duplicated
  • πŸ› Unintuitive, clunky user experience
  • πŸ› Inaccurate routing, ignores bridge heights
  • πŸ› Requires internet connection, doesn't work offline
  • πŸ› Slow, unresponsive, and glitchy
  • πŸ› Lacks key features like AIS, tidal info, and more