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TZ iBoat – Marine Navigation icon
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TZ iBoat – Marine Navigation

Nobeltec, Inc. · Navigation · United States store
#78 GROSSING · NAVIGATION
View on App Store ↗ Instagram card Google Play version →
Revenue a month, worldwide EST
$22.5K
Likely $7.5K to $67.6K
▼ 95.5% in 13 days
New ratings
+0
in 1 days, 3.2K in total
Rating
4.6 of 5
885 ratings in this store
Countries it ranks in
17
was 15 on Oct 16, 2026

Revenue

Estimated from the grossing charts of Oct 23, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / YEAR · WORLDWIDE
$270.4K
Both stores combined. Small app estimate, so no split per store
EST. LIFETIME DOWNLOADS
31K to 88.5K
Estimated from ratings count
WHERE IT EARNS · EST. / MONTH
  • United States #88 Navigation (iOS)$16.1K · 71%
  • France #19 Navigation (iOS)$2.9K · 13%
  • Spain #52 Navigation (iOS)$1K · 5%
  • United Kingdom #84 Navigation (iOS)$1K · 5%
  • New Zealand #8 Navigation (iOS)$860 · 4%
  • Argentina #100 Maps & Navigation (Play)$300 · 1%
  • Egypt #96 Maps & Navigation (Play)$216 · 1%
  • Chile #98 Maps & Navigation (Play)$78 · 0%
1 more countries
  • Israel #98 Maps & Navigation (Play)$53 · 0%
HOW SURE ARE WE
Small app: combines its grossing ranks with ratings growth (30 new ratings a month on average since launch). Tested on 418 apps with verified revenue: typically off by about 2.6 times, so the range is wide. Countries we don't track (and Google Play in China, which doesn't exist) aren't included, and neither are ads or web payments. Gross revenue before store fees.
RATINGS
885
AVG RATING
4.65
PRICE
Free
AGE
8.8y
LAST UPDATE
1d ago
VERSION
4.1.4
SIZE
428 MB
AGE RATING
4+

Last 30 days

From our daily snapshots of every grossing chart and daily ratings counts.

DAYS IN A GROSSING CHART
30 / 30
COUNTRIES NOW
17 (was 9)
NEW RATINGS, LAST 1 DAYS
+0
EST. REVENUE A MONTH, DAILY · BOTH STORES EST
Show daily values
Sep 24, 2026$299.9K a month
Sep 25, 2026$302K a month
Sep 26, 2026$22.3K a month
Sep 27, 2026$22.9K a month
Sep 28, 2026$22.2K a month
Sep 29, 2026$22.3K a month
Sep 30, 2026$22K a month
Oct 1, 2026$22.1K a month
Oct 2, 2026$21.7K a month
Oct 3, 2026$21.7K a month
Oct 4, 2026$21.7K a month
Oct 5, 2026$21.7K a month
Oct 6, 2026$21.7K a month
Oct 7, 2026$21.7K a month
Oct 8, 2026$21.6K a month
Oct 9, 2026$21.6K a month
Oct 10, 2026$499.8K a month
Oct 11, 2026$21.6K a month
Oct 12, 2026$21.6K a month
Oct 13, 2026$319.4K a month
Oct 14, 2026$313.6K a month
Oct 15, 2026$291.9K a month
Oct 16, 2026$269.2K a month
Oct 17, 2026$362K a month
Oct 18, 2026$365K a month
Oct 19, 2026$337.7K a month
Oct 20, 2026$365.5K a month
Oct 21, 2026$98.8K a month
Oct 22, 2026not in a grossing chart
Oct 23, 2026$22.5K a month
The same estimate as the headline, saved every day. Best rank Sep 24, 2026: #19 Navigation · AU. Now: #8 Navigation · NZ.
RATINGS IN THE CORE COUNTRIES, DAILY
Show daily values
Oct 22, 20263.2K ratings
Oct 23, 20263.2K ratings
3.2K on Oct 22, 2026, 3.2K on Oct 23, 2026. New ratings track new downloads, even outside the charts.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
10 purchases listed
  • Premium Subscription$9.99
  • USA$19.99
  • Elite Subscription$39.99
  • Central America & Caribbean$30.99
  • Bahamas$30.99
  • Canada West$19.99
  • AIS module$8.99
  • Great Lakes$19.99
Top in-app purchases as listed on the App Store, in local prices.
REVIEW MOMENTUM
0.4 reviews / week
  • Trendsteady
  • Recent reviews average4.3 stars
  • Recent 1 and 2 star share13%
From the latest 159 written reviews, covering 2938 days.
RELEASE CADENCE
9 updates in 90 days
  • Typical gap between releases11 days
From the last 25 versions listed on the App Store.
RATING BREAKDOWN
885 ratings
5★82%
4★9%
3★3%
2★2%
1★4%

What users want

From the latest 159 reviews on the United States App Store, Oct 8, 2018 to Sep 29, 2026: 13% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS
Wrong or poor results24%

5 of the 1 and 2 star reviews.

★★★★★ I really want to love TZ iBoat, but I can't safely use it. Compared to the Navionics maps and app, it's simply not a viable option. Shallow Tampa Bay, Florida is my main sail area and this is routinely off by 5+ feet…
★★★★★ Nothing but “oops, something went wrong” error page.
★★★★★ You can pull up a tide or current prediction for a particular point within the app but there is no capability to get this data for a future date which renders this feature useless from a planning standpoint.
Price and subscription19%

4 of the 1 and 2 star reviews.

★★★★★ The app does not provide a trial period.
★★★★★ It's not worth the money.
Login and account problems14%

3 of the 1 and 2 star reviews.

★★★★★ Nothing but “oops, something went wrong” error page.
★★★★★ I had the app and created an account on my phone.
★★★★★ Why so much info to log in?
Lost data, sync, backup10%

2 of the 1 and 2 star reviews.

★★★★★ Constant position lost alerts.
★★★★★ I promptly deleted the app.
WHAT THEY ASK FOR
  • 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… 2★, Aug 6, 2026
  • No longer need a GPS for my smaller boats 5★, Jul 14, 2024
  • There are a few features that I wish it had (a better management system for saved tracks) and the companion laptop software is absurdly priced, but the app is worth trying and spending the money for maps. 5★, May 25, 2024
  • I still haven't managed to get it connected to Furuno network on the boat I sail on (better instructions on making the network connection work would be nice), but the maps are very nice to view and all the interactions… 5★, May 25, 2024
  • The full TZ charts for Canada West include the Puget Sound; It would be nice to reciprocate, especially as we have to purchase the full chart package for Canada while only needing a tiny fraction. 4★, Aug 16, 2023
  • Would be nice to have Weather routing in the app. 5★, Mar 24, 2022
  • It needs a huge amount of data input just to get up to speed with Navionics. 2★, Mar 23, 2022
  • I still need to play with it more but, it seems to do do everything I need and more. 5★, Mar 23, 2022
WORDS THAT KEEP COMING UP IN BAD REVIEWS

Nothing stands out.

WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Easy to use27%

35 of the 4 and 5 star reviews.

★★★★★ All with intuitive user interface when on the go.
★★★★★ Very useful and kinda simple to use.
★★★★★ Easy to use and accurate.
Accurate, great results13%

16 of the 4 and 5 star reviews.

★★★★★ Easy to use and accurate.
★★★★★ Easy to use and very accurate.
★★★★★ Works great with a variety of gateways.
Looks great6%

8 of the 4 and 5 star reviews.

★★★★★ All with intuitive user interface when on the go.
★★★★★ I switched to TZ from another navigation app due to the interface with Furuno radar and love it!
★★★★★ Logical, intuitive, and the color scheme used on screen supports delimitation “soundings” based off most current publishings of marine charts publishers and aids to navigation (ATONS).
Great support5%

7 of the 4 and 5 star reviews.

★★★★★ And to top it off, the customer service is wonderful.
★★★★★ Customer service is excellent and quick to respond to questions!!!
★★★★★ I contacted TZ iboat support and they asked for the logs.
Useful, it helps5%

6 of the 4 and 5 star reviews.

★★★★★ Very useful and kinda simple to use.
★★★★★ This is particularly helpful plannning a route.
★★★★★ This is an absolute savior for when you're in a new area! Also being able to pair with a unit is an amazing feature.

Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.

What users say

Latest reviews, United States App Store.

★★★★★Sep 29, 2026
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.

★★★★★Sep 21, 2026
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

★★★★★Sep 6, 2026
No intuitive

Navionics is way better

★★★★★Aug 14, 2026
Planning

Best way to plan a long distance trip. Never had an issue on any of our passages. My first choice in mobile navigation tools.

★★★★★Aug 6, 2026
Was the best Nav app available

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.

★★★★★Jul 26, 2026
Awesome App

Super easy to operate

Apps like this

Same category, earning about as much.

Store screenshots

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App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

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Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title.

ais8charts7data7navigation6weather5radar5plan5nautical charts5ais online5real time5high resolution5marine4online4currents4access4real4high4marine gps3gps nautical3safer navigation3sailors boaters3ais targets3sst chlorophyll3rain radar3

What's new in 4.1.4

• 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.

Released Jan 2, 2018. Current version shipped Oct 22, 2026.

Store description

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/

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Prices, ranks and reviews are per country. Revenue above is already worldwide.