# TZ iBoat vs Anchor Plus

The clearest difference is price: TZ iBoat at Free against Anchor Plus's $1.99. TZ iBoat also leads on ratings volume (887 vs 7) and update cadence (every 8 days vs monthly). Anchor Plus's advantage is in-app purchases (none vs 10) and review sentiment (100% vs 79%). On rating, ads and device support there is nothing between them.

TZ iBoat is free to download; Anchor Plus costs $1.99 up front. TZ iBoat sells 10 in-app purchases, starting at $2.99 per month. Anchor Plus asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for TZ iBoat against 4.7 for Anchor Plus. That said, the two scores are not equally well evidenced: TZ iBoat has 887 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 79% of TZ iBoat's written reviews are positive against 100% of Anchor Plus's.

TZ iBoat ships an update every 8 days, Anchor Plus monthly. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | TZ iBoat | Anchor Plus |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.6 (887 ratings)](https://appshunter.io/ios/app/tz-iboat-marine-navigation/id1312769833/reviews) | **[4.7 (7 ratings)](https://appshunter.io/ios/app/anchor-plus/id1496727384/reviews)** |
| Number of ratings | **887** | 7 |
| Positive reviews | 79.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Monthly |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#102** | — |
| Size | 428 MB | 23 MB |
| Requires iOS | **14.2** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Nobeltec, Inc.](https://appshunter.io/developer/1312769832) | [Roy Cadman](https://appshunter.io/developer/1496724272) |

## What reviewers say

### TZ iBoat

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

**Currently charting:** #102 Top Grossing · Navigation (US App Store)

Navigate coastal waters with advanced marine charts, GPS, and real-time data. Monitor AIS targets, plan routes, and access weather forecasts for safer boating, sailing, and fishing. Offers offline capabilities and community map sharing.

**Highlights:** Marine GPS and nautical charts, AIS target monitoring, Route planning and safe anchoring, Tides, currents, and weather forecasts, Offline chart access, Community map sharing, NMEA connectivity

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Essential Subscription | $2.99 | per month |
| Premium Subscription | $9.99 | per month |
| Great Lakes | $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 |
| 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


### Anchor Plus

[App page](https://appshunter.io/ios/app/anchor-plus/id1496727384)

This app provides advanced anchor alarm functionality with features like Siri integration, Home Screen widgets, and Apple Watch control. It also includes weather forecasts, man overboard alerts, and a map view with drift history for enhanced safety and convenience while boating.

**Highlights:** Siri Shortcuts and voice commands, iOS14 Home Screen widgets, Apple Watch remote control, Email status updates and alarm alerts, Man Overboard (MOB) alerts, Map view with drift history, Current and 7-day weather forecast

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is TZ iBoat free?

TZ iBoat is free to download, with in-app purchases available.

### Is Anchor Plus free?

Anchor Plus costs $1.99, with no in-app purchases.

### Which has better reviews, TZ iBoat or Anchor Plus?

Anchor Plus is rated higher. TZ iBoat averages 4.6 out of 5 from 887 ratings, while Anchor Plus averages 4.7 from 7 ratings.

### Do TZ iBoat or Anchor Plus have ads?

Neither TZ iBoat nor Anchor Plus shows ads.

### Which is updated more often, TZ iBoat or Anchor Plus?

TZ iBoat ships an update every 8 days, and Anchor Plus monthly. Most recently, TZ iBoat was updated on November 11, 2026 and Anchor Plus on November 7, 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.*