# TZ iBoat – Marine Navigation — Boat GPS, Charts, AIS, Tides

> Advanced marine navigation app with charts, GPS, AIS, tides, and fishing tools. (iPhone/iPad app by Nobeltec, Inc..)

- Source: https://appshunter.io/ios/app/tz-iboat-marine-navigation/id1312769833 (this page in markdown: same URL + `.md`)
- Developer: [Nobeltec, Inc.](https://appshunter.io/developer/1312769832)
- Category: Navigation, Weather
- Price: Free with in-app purchases
- Rating: 4.60/5 from 868 App Store ratings · 385 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.2 · 420 MB
- Languages: Russian, American English, European Spanish, Italian, German (Germany), Norwegian Bokmål, Polish, French (France), Japanese
- Released: 2018-01-02
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/tz-iboat-marine-navigation/id1312769833/reviews.md

## What is TZ iBoat?

Your next-generation chartplotter.
Navigate with the world’s #1 marine charts app for coastal boating, sailing, and fishing.
Marine GPS, nautical charts, AIS Online, tides & tidal currents, anchoring, marine weather, radar, sounder, and NMEA data — everything you need for safer navigation at sea.
Built for sailors, boaters, and fishermen who need reliable navigation anywhere, online or offline.

THE SMARTEST AND CLEAREST NAVIGATION INTERFACE AT SEA
A cutting-edge interface makes navigation clearer and faster:
• TZ Bar: quick access to key features
• Dedicated screens: Weather, Fishing, NavData, Logbook, Mooring, Tides, Sounder
• Cleaner chart view, easier to read
• Customizable interface for faster access
• Modern design focused on readability

WHAT YOU CAN DO WITH TZ iBoat
• Navigate with marine GPS and nautical charts
• Monitor AIS targets locally and globally
• Plan routes and anchor safely
• Access tides, currents, and weather forecasts
• Fish smarter using oceanographic data

FOR SAILORS & BOATERS – Navigate safely
• TZ MAPS: vector, raster, satellite, and bathymetry charts
• SMART SEARCH: find marinas, buoys, tide stations, routes
• DYNAMIC LIGHTS: real-time light sectors
• DYNAMIC MOORINGS: wind-aware anchorage
• Precise GPS for coastal navigation

AIS & SAFETY – Stay aware beyond your horizon
• AIS ONLINE: global AIS targets via internet (Essential plan)
• Share AIS data with the community
• Radar and onboard instrument integration
• Real-time traffic awareness for safer navigation

FOR FISHERMEN – Gain the edge
Turn ocean data into real fishing results:
• Identify productive zones using SST, chlorophyll, currents, altimetry (Elite plan)
• Spot fish-holding conditions faster
• BATHYVISION: high-resolution bathymetry with contour lines
• Target high-potential areas with precision
• EVENT & CATCH: log and analyze catches on nautical charts

WEATHER – Clearer and more useful
• Dedicated Weather screen
• Real-time forecasts and offline access
• Rain Radar with lightning data
• High-resolution models available in Premium plan
• Iridium GO! compatibility

CONNECTIVITY & PRECISION
• NMEA connectivity: manage and prioritize data sources
• Connect AIS, radar, autopilot, and instruments
• Latitude/longitude keyboard optimized for use at sea
• Easy coordinate entry with multiple formats

COMMUNITY & ECOSYSTEM
• COMMUNITY MAPS: share local knowledge (hazards, POIs, marinas)
• Contribute and improve charts
• Trusted by 500,000+ boaters worldwide

SUBSCRIPTION PLANS
Choose the plan that fits your needs:
• Essential: AIS Online, onboard instruments, autopilot integration via Wi-Fi NMEA
• Premium: Essential + high-resolution forecasts, Rain Radar, multiple models, comparison
• Elite: Premium + ocean layers (SST, Chlorophyll, SSH, Currents).
Monthly and annual plans available, with savings on yearly options. Core features remain available for free.

CHARTS AND DATA PLANS SUBSCRIPTIONS:
The payment will be debited from the Apple account once the purchase is confirmed.
The subscriptions and automatic renewals can be managed by entering the account settings after making the purchase.
Any unused part of a free trial period, if offered, will be lost when a subscription is purchased.
Terms of use: https://mytimezero.com/eula/
Privacy policy: https://mytimezero.com/privacy-statement/

## Key features

- Offline marine charts
- GPS and route planning
- AIS Online tracking
- Community map contributions
- Dynamic mooring and lighting
- Advanced fishing tools
- Tides and tidal currents

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Bahamas | $30.99 | per year |
| Essential Subscription | $2.99 | per month |
| Eastern Mediterranean | $61.99 | per year |
| Premium Subscription | $9.99 | per month |
| Elite Subscription | $39.99 | per month |
| Great Lakes | $19.99 | per year |
| Central America & Caribbean | $30.99 | per year |
| Western Mediterranean | $40.99 | per year |
| Canada East and North | $19.99 | per year |
| Canada West | $19.99 | per year |
| USA | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Radar module | $49.99 | one-time |
| AIS module | $8.99 | one-time |


## Chart rankings

- #59 in Top Grossing · Navigation (US App Store)

## What do users think of TZ iBoat?

Overall sentiment: positive

**Pros**

- 🚀 Easy to use
- 🚀 Accurate charts
- 🚀 Useful features (weather, tides, currents, etc.)
- 🚀 Good integration with Furuno radar and AIS
- 🚀 Seamless cloud sync between devices
- 🚀 Excellent customer support

**Cons**

- 🐛 Occasional crashes or freezing
- 🐛 Inaccurate or outdated charts in some areas
- 🐛 Anchor alarm not loud enough
- 🐛 Difficulty importing/managing routes and waypoints
- 🔋 Battery drain on mobile devices

**Commonly reported bugs**

- GPS position not updating reliably while moving
- Radar overlay not functioning properly
- Compatibility issues with older devices or iOS versions

**Most requested features**

- Automatic routing and trip planning
- Improved satellite imagery and overlays
- Better integration with other marine electronics
- More customization options for data displays
- Ability to mirror camera feeds as a rear-view

## Recent user reviews (10 of 385)

All indexed reviews: https://appshunter.io/ios/app/tz-iboat-marine-navigation/id1312769833/reviews.md

### 5/5 — Iove this app

*2026-08-06*

I’m still getting used to using this but it is intuitive and that is what I need. Thanks for making it easy

**Developer response:** Thanks!!

### 2/5 — Was the best Nav app available

*2026-08-06, version 4.0.7*

Sadly I report that I prefer the previous version to the new enhanced release. Why? Because I want an app that is simple and can be used on an iPad mounted on my inner helm station and far enough away so that it’s uncomfortable to reach tiny plus and minus zoom buttons or use fingers to enlarge or reduce the zoom factor. The previous version had an optional zoom slider that could be reached on the screen’s right side and controlled easily by my right hand stabilized by the iPad’s frame. I have requested twice to have this feature added back but to no avail. Also the new version which is also Android compatible just seems to have too many marketing attractants that I should be able to turn off but cannot figure out how. As a navigation instructor this is frustrating to the max. I would love to rewrite this review to be more positive but only will if TZ-Nobeltec responds with some better news.

### 1/5 — I tried this before apparently.

*2026-08-04*

Still way too dear in this financial environment. I only need a small area of my local fishing spots. The basic free version is useless. Not even depth contours.

**Developer response:** Hello, thank you for your feedback. The free map is based on OSM and does not include detailed nautical chart data such as depth contours. These are available through TZ MAPS, using official nautical chart sources, which require paid licensing. In Australia, the chart area is currently offered as a monthly subscription for the full zone. We understand that some users may only need a small local area, especially for fishing spots, and your feedback is noted. The free version still includes useful tools such as GPS, basic weather, anchor alarm, distance measurements, logbook and user objects. Marie, Product Team

### 4/5 — Modification, ajout de données

*2026-07-27*

Bonjour, je vous ai écrit à plusieurs reprises concernant l’ajout de données et de pouvoir laisser à utilisateur de pouvoir le mettre ou bon lui semble au niveau de son écran iPad comme sur Time zéro. Étant donné que nous avons de grands écrans, je souhaiterais pouvoir déplacer à droite ou à gauche les données en graphique comme je le souhaite pour avoir plus d’informations lisibles.
Quand il y aura-t-il avec votre application la possibilité de faire un routage ?

**Developer response:** Bonjour et merci d’avoir pris le temps de nous écrire.  Nous comprenons votre souhait de pouvoir déplacer librement les NavData sur les iPads à grand écran afin de les positionner où vous le souhaitez. Cette fonctionnalité n’est pas prévue pour le moment.
Concernant le Routage, nous souhaiterions échanger avec vous afin de mieux comprendre vos besoins car nous travaillons actuellement sur cette fonctionnalité.
N'hésitez pas à nous envoyer un mail à l'adresse ProductTeam@mytimezero.com. Marie, de l'équipe produit.

### 5/5 — Awesome App

*2026-07-26, version 4.0.6*

Super easy to operate

### 5/5 — Wonderful surprise

*2026-07-22, version 4.0.6*

Just installed TZ pro 2 months ago. Added TZ IBoat at same time. I am thrilled by the integration of the two systems. I plan rout on the IPad and they are uploaded to TZ pro. Activate a rout on any device and the rout is active on all system devices. Highly recommended product.

### 5/5 — Unkomplizierter Urlaub

*2026-07-14*

Dank TZ iBoat ein völlig unkomplizierter Törn und Urlaub rund um Sizilien und der unzähligen Inseln und Buchten. Habe definitiv meine künftige Navigationsapp gefunden! 🤗

**Developer response:** Guten Tag und vielen Dank für Ihr Feedback!  Was für eine wunderschöne Kreuzfahrt! Vielen Dank für Ihr Vertrauen in TZ iBoat. Marie vom Produktteam

### 4/5 — Problème majeur de sécurité  en mer : l’affichage superposition instruments/carte ont été supprimé

*2026-06-28*

Bonjour,

Nous utilisons TZ iBoat dans un cadre de navigation réel et de formation de skippers, y compris de professionnels.

La version 4.0.3 semble avoir supprimé ou rendu inaccessible l’affichage simultané de la cartographie et des données de navigation essentielles (COG, SOG, cap, position, profondeur, vent, etc.).

Si tel est le cas, cette évolution constitue pour nous une régression majeure.

L’intérêt même d’un logiciel de navigation est de pouvoir visualiser en permanence la situation du bateau sur la carte tout en disposant simultanément des informations de navigation nécessaires à la prise de décision.

En mer, il n’est ni pratique ni souhaitable d’avoir à basculer continuellement entre un écran “Carte” et un écran “Instruments” pour obtenir des informations qui doivent être consultées ensemble.

Cette organisation ne correspond ni à l’usage réel de la navigation ni aux principes de sécurité que nous enseignons.

Aujourd’hui, nous formons des plaisanciers, des chefs de bord et des professionnels. Nous avons besoin de pouvoir afficher simultanément la cartographie et les données de navigation. Sans cette fonctionnalité, il devient difficile d’envisager l’utilisation de TZ iBoat comme outil principal de navigation et de formation.

Pouvez-vous nous confirmer :

* si cette fonction existe toujours dans la version 4.0.3 ;
* comment la réactiver le cas échéant ;
* ou s’il s’agit d’une suppression volontaire de l’interface.

### 3/5 — Frustrating

*2026-06-27, version 4.0.3*

Keeps going into 3D view when I scroll or zoom, despite 3D settings being turned off. I don’t ever want 3D. Don’t remember the older version doing this.

### 4/5 — New version glitchy, keeps shutting down

*2026-06-24*

I’ve used tz iBoat for years with great success. Once I installed the latest version on 8 June 2026 it has become incredibly unstable and shuts down frequently. Really not even usable. I created a service ticket. Hopefully problem can be resolved quickly but until it is I suggest avoiding the new version

Update 25 June -

Ver. 4.0.3 has resolved the problem. Thanks for fixing it so quickly

**Developer response:** Hello! 
Sorry to hear that. 
We indeed discovered some issues in v4.0; developers worked hard (and still work) to fix most of them. Please could test latest version 4.0.3, there is a big chance that your stability/performance issue was fixed. Could you have a try? If you still have the problem, please could you contact Mathieu with this email : productteam@mytimezero.com I will be happy to check the problem with you.

## Frequently asked questions about TZ iBoat

### 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.

## Version history (last 5 releases)

### 4.0.10 — 2026-08-26

Version 4.0.10 improvements:
• Fixed an issue preventing users from submitting requests via the “Request a Feature” form.

### 4.0.9 — 2026-08-18

Version 4.0.9 improvements:
• Fixed an issue where users lost their selected layers when entering the Anchor Watch screen.

### 4.0.8 — 2026-08-07

Version 4.0.8 improvements:
• Fixed an issue where users were prompted to fill in their Boat Profile even though it was already complete.
• Fixed a pinch gesture issue that could switch the Navigation screen to 3D mode.
• Improved application stability.

### 4.0.7 — 2026-07-27

Version 4.0.7 improvements:
•	Improved Tides and Currents data.
•	Improved handling of network errors with Starlink: fixed an issue that could cause unexpected disconnections or weather service failures when the Internet connection returned access errors (HTTP 403). The application now correctly distinguishes connectivity issues from service errors for a more reliable experience.
•	Improved application stability.

### 4.0.6 — 2026-07-17

Version 4.0.6 improvements:
•	Fixed an issue where users were repeatedly asked to complete their **Boat Profile** at startup, even when it was already completed.
•	Improved application stability.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*