TZ iBoat – Marine Navigation

TZ iBoat – Marine Navigation

Boat GPS, Charts, AIS, Tides

886 ratings
394 reviews
#86 in top-grossing Navigation
🗺️ Navigation
☀️ Weather
Free
In-App Purchases

Details

Released
January 2, 2018
Updated
October 22, 2026

Features

Background Location Access

TZ iBoat – Marine Navigation video #1 for iPhone
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TZ iBoat – Marine Navigation screenshot #12 for iPhone
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About

Navigate the seas with advanced marine charts, GPS, and AIS data, even offline. This app offers detailed bathymetry, community-contributed map data, and dynamic features for safe boating, sailing, and fishing.

✓Offline marine charts
✓GPS and route planning
✓AIS Online tracking
✓Community map contributions
✓Dynamic mooring and lighting
✓Advanced fishing tools
✓Tides and tidal currents
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What users say about TZ iBoat

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What's New in TZ iBoat

4.1.4

October 22, 2026

• Navigate in Landscape Mode You can now use the Navigation screen in landscape mode on your smartphone, ideal when your phone is mounted or mirrored to a larger display. You can also display NavData alongside the chart, keeping essential navigation information visible while you navigate. • Bug fix: Text in dialog boxes now consistently starts with a capital letter. • Improved application stability. • Improved Sign in with Apple experience.

More
6

Subscriptions & In-App Purchases

Bahamas

Bahamas & Turks and Caicos Islands

$30.991 Year
7 Days trial
How to cancel TZ iBoat subscription ⁉️

Charts

Top Grossing

📈 86+4

Navigation

This app rose +4 positions in Navigation chart.

Last updated on November 4, 2026.

Events

Read more about Redesigned. Easier to Use.

Redesigned. Easier to Use.

A cleaner, smarter way to navigate at sea.

Jun 3, 2026 — Jul 4, 2026

Read more about A Clearer View of The Bahamas

A Clearer View of The Bahamas

New bathymetric chart data across The Bahamas

May 3, 2026 — Jun 3, 2026

Read more about New: Route Assist Feature

New: Route Assist Feature

Create routes effortlessly and automatically.

Jun 6, 2024 — Jul 7, 2024

User reviews

Oct 27 weather buoys went missing

Out fishing the nine mile bank off of San Diego on Oct 27 and almost ran over a weather buoys. Compared my furuno MFD to my iPad with TZ app and the weather buoys on and around the 9 mile bank we’re missing? Same thing on my buddy’s iPhone with TZ app. A few days later while at home I rechecked the TZ app and the buoys were there again. Not sure what happened.
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My new first-line chartplotter.

I’ve used TZ iBoat as my backup chartplotter for a few years, with Navionics/Garmin as my main plotter. Today my wife and I decided to use iBoat for our trip. We are very impressed.

I liked the AIS integration, particularly. The UI is very flexible so I moved a few elements around. The experience was very smooth and completely reliable on this trip.

My wife liked the detailed info that is stored for a route. She was able to find times and locations that she hadn’t recorded even *after* completing the trip.

TZ iBoat is being promoted to be our main chartplotter.
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Great Navigation App

I used this app all over the Bahamas and it served me perfectly. I like how it mimics the Chart books which I studied long before using this app.

First impression

I miss being able to insert a point into a course and dragging it to a news spot. The app is not real straight forward as the old Nobletec Nav….. but its similar enough

2nd season

After 15 years of using Navionics I have switched to TZ and had a few issues at first. There are so many options and settings it is easy to get lost. But I am on my second season and I am very happy now. For me it is important that I keep the charts and functionality even once the 12 month are over. Unlike with the previously mention company. This seems to be the case with TZ if you download the charts onto your device, but I did get the subscription for another year anyway.
I use it on my iPad and iPhone. The anchor watch is a good feature…. It would be cool to get the anchor alarm onto the Apple Watch. I also like the weather features very much! I just hope you are not going to over improve every year!
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Response from developer

Thank you very much for your feedback and for using TZ! We are happy to hear that you are enjoying the app. Apple Watch integration is not planned at the moment, but we will keep your suggestion in mind. Marie, Product Team

User experience

🐞

Reported Bugs

3 issues

GPS position not updating reliably while moving

Bug

Radar overlay not functioning properly

Bug

Compatibility issues with older devices or iOS versions

Bug
✨

Requested Features

5 requests

Automatic routing and trip planning

Feature

Improved satellite imagery and overlays

Feature

Better integration with other marine electronics

Feature

More customization options for data displays

Feature

Ability to mirror camera feeds as a rear-view

Feature

FAQ

What does TZ iBoat do?

TZ iBoat is a comprehensive marine navigation app designed for coastal boating, sailing, and fishing. It provides offline access to detailed marine charts, GPS functionality, AIS tracking, tide information, and specialized tools for anglers.

What are the key features of TZ iBoat?

Key features include revolutionary TZ MAPS with integrated raster and vector data, AIS Online for extended target tracking, Community Maps for collaborative chart updates, Dynamic Moorings for anchorage suggestions, Dynamic Lights for navigational aid visualization, and Smart Search for quick information retrieval.

How much does TZ iBoat cost?

The app offers a 7-day free trial for its TZ MAPS. While the core app is free, it includes in-app purchases for additional features and subscriptions, such as the SPORTFISHING OCEAN-O SUBSCRIPTION for advanced weather and oceanographic data.

Is TZ iBoat compatible with my device?

The description does not specify device compatibility. However, as a mobile application, it is designed for smartphones and tablets. Users should check the app store listing for specific operating system requirements.

Who would benefit from using TZ iBoat?

TZ iBoat is ideal for anyone who navigates the seas, including recreational boaters, experienced sailors, and avid fishermen. Its advanced features cater to both basic navigation needs and specialized requirements for finding fish and safe anchorages.