Smart Marine Monitoring

Boat monitoring
that actually
makes sense.

Real-time battery health, bilge activity, GPS location, and weather — all in your pocket. HullSense keeps watch so you never have to wonder.

Join the Waitlist See Features →
$250 One-time hardware
$10/mo Pro subscription
Free Basic monitoring
Battery
GPS Map
Weather
History
Alerts
Bluetooth, WiFi, and LTE cellular
No subscription needed for basic monitoring
Android & iOS
Made in the USA
How It Works
Up and running
in under an hour.

No marine electrician required. If you can connect two wires to a battery, you can install HullSense.

01

Mount the device

Connect HullSense to your boat's 12V or 24V battery using the included terminals. Mount the compact enclosure anywhere in your electrical compartment.

02

Pair with the app

Download the free HullSense app, open it near your boat, and tap Pair Device. Registration completes automatically over Bluetooth in seconds.

03

Monitor from anywhere

That's it. Check in from the dock, the bar, or across the country. Battery, bilge, GPS, and weather are always a tap away.

Features
Everything you need.
Nothing you don't.
Full feature details
Battery
Know your voltage, charge level, and chemistry — before a dead battery leaves you stranded.
Free
Bilge
Know the moment your bilge runs — without cutting a single wire.
Free
GPS Location
See exactly where your boat is — from the dock, the bar, or across the country.
Free
Weather & Tides
7-day forecast and NOAA tides, localized to your marina. Always free.
Free
Push Alerts
Critical battery, bilge activity, and device status — straight to your phone.
Free
Pro — with subscription
$10 / mo
LTE Cellular
Your boat stays connected from any marina — no WiFi, no phone nearby, no excuses.
Pro
History Charts
Voltage charts and bilge logs going back months. Patterns you'd never see in real time.
Pro
Geofencing
Draw a boundary around your marina. Know immediately if your boat leaves it.
Pro
Battery Health
Projected months of life remaining — catch a failing battery before it fails you.
Pro
Pricing
Simple, honest pricing.

Hardware is a one-time purchase. The subscription is per device, not per account, and you can cancel any time.

Free
$0 / mo
Included with every HullSense device. No card required.
  • Bluetooth monitoring
  • WiFi monitoring
  • Battery voltage & percentage
  • Weather & 7-day forecast
  • Push notifications
  • GPS location display
  • LTE cellular (Pro only)
  • Battery history charts (Pro only)
  • Geofencing (Pro only)
Most Popular
Pro
$10 / mo
$8.33 / mo
$50 billed every 6 months
$7.50 / mo
$90 billed yearly
Free features, plus LTE, history, geofencing, and more.
  • Every free feature
  • LTE cellular connectivity
  • Adjustable reporting interval (5–60 min)
  • Battery history charts (24H, 1W, 1M, 3M)
  • Battery health analysis
  • Bilge activation history log
  • Geofencing with exit alerts
  • CSV data export

Hardware sold separately — $250 one-time purchase. Cancel any time.

Basic monitoring is free with every device — no subscription needed.

Be the first to know
when HullSense ships.

Drop your email and we'll reach out the moment devices are available.

No spam. One email when we launch.