Comparison

UTM Coordinates Tool vs TZ iBoat

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

UTM Coordinates Tool

Easily convert coordinates between UTM, decimal degrees, GPS, and sexagesimal formats. Locate yourself, set pins, measure distances, search for places, and share your location data.

Highlights
  • Convert between 4 coordinate formats
  • Locate current position
  • Set and move map pins
  • Measure distances
  • Search for locations
  • Share coordinates
  • Display on maps
  • Save and load coordinates
Features
Read full description

UTM Coordinates Tool is a great tool to convert your coordinates into different formats. You can convert your coordinates into 4 formats: - UTM - Decimal degrees (DDD.DDDDDD°) - GPS Format (DDD° MM.MMM′) - Sexagesimal (DDD° MM′ SS″) Extra functions: - You can locate yourself and convert these coordinates. - You can set a pin or move a pin and it shows you the coordinates of the pin. - You can see the distance between you and the coordinates or between you and the pin. - You can search for locations. - You can share and send your coordinates. - You can display the coordinates (or your location) on the maps app. - You can save and load coordinates to use them later. - You can hide the map to save battery and mobile data.

About

TZ iBoat

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.

Highlights
  • Offline marine charts
  • GPS and route planning
  • AIS Online tracking
  • Community map contributions
  • Dynamic mooring and lighting
  • Advanced fishing tools
  • Tides and tidal currents
Features
Read full 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/

Screenshots

UTM Coordinates Tool4 screens
TZ iBoat4 screens

Verdict

The call

The clearest difference is price: TZ iBoat at Free against UTM Coordinates Tool's $3.99. TZ iBoat also leads on rating (4.6 vs 3.9) and update cadence (every 8 days vs every 2 months). UTM Coordinates Tool's advantage is in-app purchases (none vs 17) and iOS requirement (8.0 vs 14.2). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

TZ iBoat is free to download; UTM Coordinates Tool costs $3.99 up front. TZ iBoat sells 13 in-app purchases, starting at $2.99 per month. UTM Coordinates Tool asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

TZ iBoat holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: TZ iBoat has 878 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 71% of UTM Coordinates Tool's written reviews are positive against 79% of TZ iBoat's.

UpkeepUpdate frequency

UTM Coordinates Tool ships an update every 2 months, TZ iBoat every 8 days. The most recent releases landed on September 25, 2026 and September 28, 2026 respectively.

Scorecard9 real differences · 2 level
UTM Coordinates Tool versus TZ iBoat: the parameters behind the verdict, then further details
ParameterUTM Coordinates ToolTZ iBoat
Price$3.99Free — better
Rating3.9 (11 ratings)4.6 (878 ratings) — better
Positive reviews70.8% of reviews79.5% of reviews — better
Number of ratings11878 — better
Update frequencyEvery 2 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank—#80 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better14.2
Further details — not scored
Size8 MB427 MB
Age rating4+4+
DeveloperNicolas SchottenNobeltec, Inc.

Customer experience

UTM Coordinates Tool

All ratings11 ratings
Positive72.7%
Neutral0.0%
Negative27.3%
Written reviews24 reviews
Positive70.8%
Neutral0.0%
Negative29.2%

TZ iBoat

All ratings878 ratings
Positive91.5%
Neutral3.2%
Negative5.4%
Written reviews390 reviews
Positive79.5%
Neutral7.2%
Negative13.3%

Bugs and requests

UTM Coordinates Tool

Not enough reviews yet to summarise bugs or requests.

TZ iBoat

Reported bugs

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

Requested features

5 requests
  • 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

In-app purchases

None

UTM Coordinates Tool

No in-app purchases

13 purchases

TZ iBoat

Subscriptions11
  • Essential Subscription$2.991 Month
  • Premium Subscription$9.991 Month
  • Great Lakes7 Days trial$19.991 Year
Show 8 more
  • Canada East and North7 Days trial$19.991 Year
  • Canada West7 Days trial$19.991 Year
  • USA7 Days trial$19.991 Year
  • Bahamas7 Days trial$30.991 Year
  • Central America & Caribbean7 Days trial$30.991 Year
  • Elite Subscription$39.991 Month
  • Western Mediterranean7 Days trial$40.991 Year
  • Eastern Mediterranean7 Days trial$61.991 Year
One-time2
  • AIS module$8.99
  • Radar module$49.99

Questions

Is UTM Coordinates Tool free?
UTM Coordinates Tool costs $3.99, with no in-app purchases.
Is TZ iBoat free?
TZ iBoat is free to download, with in-app purchases available.
Which has better reviews, UTM Coordinates Tool or TZ iBoat?
TZ iBoat is rated higher. UTM Coordinates Tool averages 3.9 out of 5 from 11 ratings, while TZ iBoat averages 4.6 from 878 ratings.
Do UTM Coordinates Tool or TZ iBoat have ads?
Neither UTM Coordinates Tool nor TZ iBoat shows ads.
Which is updated more often, UTM Coordinates Tool or TZ iBoat?
UTM Coordinates Tool ships an update every 2 months, and TZ iBoat every 8 days. Most recently, UTM Coordinates Tool was updated on September 25, 2026 and TZ iBoat on September 28, 2026.

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