# UTM Coordinates Tool vs TZ iBoat

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.

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.

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 885 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 80% of TZ iBoat's.

UTM Coordinates Tool ships an update every 2 months, TZ iBoat every 8 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | UTM Coordinates Tool | TZ iBoat |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [3.9 (11 ratings)](https://appshunter.io/ios/app/utm-coordinates-tool/id1174267396/reviews) | **[4.6 (885 ratings)](https://appshunter.io/ios/app/tz-iboat-marine-navigation/id1312769833/reviews)** |
| Number of ratings | 11 | **885** |
| Positive reviews | 70.8% of reviews | **79.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#94** |
| Size | 8 MB | 428 MB |
| Requires iOS | **8.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nicolas Schotten](https://appshunter.io/developer/880987601) | [Nobeltec, Inc.](https://appshunter.io/developer/1312769832) |

## What reviewers say

### UTM Coordinates Tool

[App page](https://appshunter.io/ios/app/utm-coordinates-tool/id1174267396)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### TZ iBoat

[App page](https://appshunter.io/ios/app/tz-iboat-marine-navigation/id1312769833)

**Currently charting:** #94 Top Grossing · Navigation (US App Store)

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:** Vision Pro support

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Essential Subscription | $2.99 | per month |
| Premium Subscription | $9.99 | per month |
| Great Lakes | $19.99 | per year |
| Canada East and North | $19.99 | per year |
| Canada West | $19.99 | per year |
| USA | $19.99 | per year |
| Bahamas | $30.99 | per year |
| Central America & Caribbean | $30.99 | per year |
| Elite Subscription | $39.99 | per month |
| Western Mediterranean | $40.99 | per year |
| Eastern Mediterranean | $61.99 | per year |
| AIS module | $8.99 | one-time |
| Radar module | $49.99 | one-time |

**What reviewers like**

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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

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

**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


## Frequently asked 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 885 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 October 24, 2026 and TZ iBoat on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*