More overview.
More fun on board.

  • No registration.
  • No monthly fees.
  • No cloud.

Your boat – your data!

Jolltau on iPhone and iPad at the helm of a motor yacht: automated trip and performance reports, custom dashboards and anchor watch

Your boat provides the data. Jolltau makes sense of it.

RPM, speed, fuel consumption, tank level and water depth – the information your boat already has, right on your smartphone.

Log your trips

Review routes, running times and engine data in clear trip reports. Reports and key values are saved automatically.

Design your own view

Pick the readings that matter, arrange the tiles and tap any value to enlarge it – a layout built around the data you care about.

Watch your position

Set an anchor radius and get an alert on your smartphone if you drift outside the chosen circle.

Available readings depend on the devices and sensors on board.
Anchor watch uses the smartphone's GPS position.

App simulator

Give Jolltau a try.

No boat needed: the simulator shows the app with demo data. Tap the tiles, open a trip report or start the anchor watch.

Simulate driving mode

Tap a tile for the single-value view. Use ⇆ to pick another of the 16 demo values, and “Arrange tiles” to swap two tiles.

Demo data. In the app, the available readings depend on the devices and sensors on board.

On your own phone

Test Jolltau yourself – even without a boat.

Download Jolltau from the App Store to your iPhone or iPad and choose “Demo mode” at start-up. That way you can explore the real app with sample boat data – no installation kit required.

Get it on the App Store
QR code: Jolltau on the App Store
Scan the QR code with your iPhone camera

Connect. Activate.
Discover your boat data.

Jolltau installation kit: green accessory bag, gateway, NMEA 2000 drop cable with T-piece, cable ties and a smartphone showing activation code entry
Smartphone not included.

Gateway + connection accessories + app activation

The Jolltau installation kit connects your compatible NMEA 2000 network to the app. Gateway, connection accessories and activation code make getting started easy – with a bag for your accessories.

  1. 01ConnectConnect the gateway to the NMEA 2000 network using the supplied accessories.
  2. 02ActivateEnter the activation code in the app or scan the QR code.
  3. 03DiscoverSee your boat data live on your smartphone and record your trips.
Request a kit

A maritime idea. Developed from experience.

In German, a “Jolltau” is a simple tackle used on board. It stands for a centuries-old principle of seafaring: make clever use of the means at hand, redirect their force and make them even more useful. That is exactly what we do with your boat's data.

Jolltau is made by working professionals from the boating industry on the Bay of Lübeck. We develop Jolltau from everyday practice on the water.

Questions, kit enquiries & feedback

Get in touch.

Want to know whether Jolltau suits your boat, request an installation kit or send us feedback? We will get back to you personally.

Or email us directly:
jolltau@nautic-yachting.com

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