# TZ iBoat vs Aisea

The clearest difference is review sentiment: TZ iBoat at 79% against Aisea's 14%. TZ iBoat also leads on update cadence (every 8 days vs every 5 weeks) and chart position (#99 vs unranked). Aisea's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TZ iBoat sells 10 in-app purchases, starting at $2.99 per month. Aisea asks for nothing beyond the download.

TZ iBoat ships an update every 8 days, Aisea every 5 weeks. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | TZ iBoat | Aisea |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (886 ratings)](https://appshunter.io/ios/app/tz-iboat-marine-navigation/id1312769833/reviews)** | — |
| Number of ratings | **886** | — |
| Positive reviews | **79.4% of reviews** | 14.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#99** | — |
| Size | 428 MB | 86 MB |
| Requires iOS | **14.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nobeltec, Inc.](https://appshunter.io/developer/1312769832) | [Aidea Inc.](https://appshunter.io/developer/1454632788) |

## What reviewers say

### TZ iBoat

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

**Currently charting:** #99 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 (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


### Aisea

[App page](https://appshunter.io/ios/app/aisea-sailing-support-app/id1454632789)

This navigation app enhances maritime safety by displaying nearby vessel movements and potential collision risks. It also allows users to report hazards, review past voyages, and manage fleets. Communicate with nearby users directly through the app.

**Highlights:** AIS vessel tracking and collision alerts, Map editor for reporting hazards, Voyage playback and analysis, Fleet management tools, In-app Push-To-Talk communication

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TZ iBoat free?

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

### Is Aisea free?

Aisea is free to download, with no in-app purchases.

### Do TZ iBoat or Aisea have ads?

Neither TZ iBoat nor Aisea shows ads.

### Which is updated more often, TZ iBoat or Aisea?

TZ iBoat ships an update every 8 days, and Aisea every 5 weeks. Most recently, TZ iBoat was updated on November 4, 2026 and Aisea on November 2, 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.*