# KnowWake vs TZ iBoat

The clearest difference is rating: TZ iBoat at 4.6 against KnowWake's 4.0. TZ iBoat also leads on review sentiment (80% vs 55%) and chart position (#91 vs unranked). KnowWake's advantage is in-app purchases (none vs 17). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. TZ iBoat sells 13 in-app purchases, starting at $2.99 per month. KnowWake asks for nothing beyond the download.

TZ iBoat holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 273 and 885 respectively. Written reviews point the same way: 55% of KnowWake's written reviews are positive against 80% of TZ iBoat's.

KnowWake ships an update every 11 days, TZ iBoat every 8 days. The most recent releases landed on October 21, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | KnowWake | TZ iBoat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (273 ratings)](https://appshunter.io/ios/app/knowwake/id688017646/reviews) | **[4.6 (885 ratings)](https://appshunter.io/ios/app/tz-iboat-marine-navigation/id1312769833/reviews)** |
| Number of ratings | 273 | **885** |
| Positive reviews | 55.3% of reviews | **79.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 8 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#91** |
| Size | 123 MB | 428 MB |
| Requires iOS | **13.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Application Generation, Inc](https://appshunter.io/developer/571709068) | [Nobeltec, Inc.](https://appshunter.io/developer/1312769832) |

## What reviewers say

### KnowWake

[App page](https://appshunter.io/ios/app/knowwake/id688017646)

This marine navigation platform offers detailed waterway information for numerous global locations. Discover waterfront destinations, access real-time community reports on hazards and marine life, and utilize advanced navigation features for a safer and more informed boating experience.

**Highlights:** Waterfront destinations, Real-time waterway reports, Wake zone indicators, Marine weather forecasts, Anchor alarm, Location sharing, Offline mode

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🗺️ Comprehensive wake zone and speed restriction information
- 👍 User-friendly and intuitive interface
- 🆓 Free app with valuable features
- 📍 Accurate location data for marinas, restaurants, and fuel docks
- 🚤 Essential tool for boaters and water sports enthusiasts

**What reviewers complain about**

- 🐛 Frequent crashes and freezing issues
- ⏱️ App becomes unstable after 30 seconds of use
- 🔌 Constant stability problems across multiple iOS versions
- ❌ Routing functionality frequently fails
- 🗺️ Limited coverage for certain regions (Great Lakes, some Florida lakes)

**Reported bugs**

- App crashes immediately upon opening
- App freezes after 30 seconds of use
- Login/registration fails or times out indefinitely
- Routing returns error messages and crashes
- Tapping on location icons does nothing or crashes app

**Requested features**

- Improved stability and crash prevention
- Course-up/heading-up map orientation option
- Depth layer integration for navigation safety
- NOAA raster charts availability
- Better routing algorithm with estimated time and distance


### TZ iBoat

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

**Currently charting:** #91 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 KnowWake free?

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

### Is TZ iBoat free?

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

### Which has better reviews, KnowWake or TZ iBoat?

TZ iBoat is rated higher. KnowWake averages 4.0 out of 5 from 273 ratings, while TZ iBoat averages 4.6 from 885 ratings.

### Do KnowWake or TZ iBoat have ads?

Neither KnowWake nor TZ iBoat shows ads.

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

KnowWake ships an update every 11 days, and TZ iBoat every 8 days. Most recently, KnowWake was updated on October 21, 2026 and TZ iBoat on October 26, 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.*