# Harry's Sailor

> GPS navigation and sailing companion with advanced features and nautical references. (iPhone/iPad app by Harald Schlangmann.)

- Source: https://appshunter.io/ios/app/harrys-sailor/id319244049 (this page in markdown: same URL + `.md`)
- Developer: [Harald Schlangmann](https://appshunter.io/developer/307688601)
- Category: Sports, Navigation
- Price: $2.99 with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 41 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2009-06-12
- Data updated: 2026-08-21
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/harrys-sailor/id319244049/reviews.md

## What is Harry's Sailor?

OVERVIEW

Harry's Sailor is a GPS based navigation tool / sailing companion. Like all apps from Harry's GPS Suite it uses an advanced GPS Engine developed and maintained for a decade. For this Sailor app, the engine was expanded for the specific situation on a ship. One example for this expansion is treatment of speed. GPS is weak delivering exact speed informations at low vessel speeds making it necessary to utilize special algorithms.

FEATURES

This version brings a number of unique features to the iPhone platform. Examples are: visualization and measurement of heeling including a visual alarm when heeling in larger that 20 / 25 degree; display of racing rule #10: when boats are on opposite tacks, a port-tack boat shall keep clear of a starboard-tack boat; full navigation support, course can be defined using polar coordinates, defined waypoints, or using a course given; full integration of Google Maps; while navigation is started, deviation from course, distance to waypoint, and velocity made good (VMG) is displayed continuously; extensive reference on nautic information: signal flags, morse code, buoyages, lights and shapes, wind speed; finally, a full trip recorder including statistics, ports visited, and Google Earth export. 

MORE INFORMATION

Sailor requires an iOS device featuring GPS. In case you want to use an iPod touch, an external GPS mouse needs to be added. Compatible devices are listed on www.gps-laptimer.de/compatibility/ios.

## Key features

- Heeling visualization and alarm
- Racing rule #10 display
- Full navigation support (polar, waypoints, course)
- Google Maps integration
- Deviation from course and VMG display
- Nautical information reference
- Trip recorder with Google Earth export

## Pricing and in-app purchases

Base price: $2.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Satellites Feature | $0.99 | one-time |


## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/harrys-sailor/id319244049/reviews.md

### 2/5 — Naja, geht so

*2011-11-09*

Wenn es dieses App auf deutsch geben würde? Das wäre auf jeden Fall viel besser. 
Wo ist eigentlich die App Harrys Motorboat? Die Werbung dafür habe ich irgendwann mal gesehen.

### 5/5 — Great

*2011-11-06*

Just a great app can't wait till the power boat version comes out.

### 5/5 — Merges features of multiple higher priced apps

*2011-05-26*

I have used Harry's on my sailboat for about a year now, and am very glad I purchased this app.  Each of the four primary screens can be bought as stand alone sailing apps elsewhere, but I have not found one app which combines the Navigation, Boat Dynamics, GPS movement data, GPS map, waypoint management and references that this app provides.

I mount this appication on the pelorus, and turn off every other thing on the boat except for apparent wind, cuz I no loger need it - Harry's Sailor does it better than my entire $10,000 instrument suite.

Dangit....
LOL!!

### 5/5 — Harry's Sailor - Brilliant

*2011-04-04*

This is an excellent program for yacht racing. The screens are clear and comprehensive, providing an outstanding navigation tool for racing.
The only weakness at this stage is that the iphone screen is not really large enough. If this program can be brought to the ipad, it would undoubtedly become the defacto standard for yacht racing navigators.

### 2/5 — Add ons defectueux

*2011-03-17*

Les add ons ne se chargent pas et bloquent l'application

### 5/5 — 1A

*2010-12-03*

eine gelungene app. gerade auf der arbeit getestet.!! gps pos. sehr genau.!! heeling exat mit dem heelingsysten des schiffes auf welchem ich gerade arbeite(auf dem NOK).  kursangabe sehr genau 1grad abweichung zum kreiselkompass.! sat.kartenpos. und ladezeit 1A.. ich kann es nur empfehlen,werde es in der neuen segelsaison 2011 aufjedenfall nutzen...nutze das iphone4.!

### 4/5 — Compass

*2010-07-23*

Still a good app, but I'd like the compass to integrate with the 3G S or iPhone 4 compass, instead of relying only on GPS for compass data for the above stated phones. Maybe a setting option on newer phones to use the built in compass.

### 5/5 — Sailor

*2010-04-27*

Does exactly what it says, first rate essential for any yachtsman with an iPhone. Fantastic value even if you have other nautical apps, which I have! Good job! Keep the updates coming!

### 2/5 — Bugs und unübersichtlich

*2010-04-09*

Das Swipen bei der Lichterführung funktioniert nicht und das Setzen neuer Wegpunkte ist mir ein Rätsel. Warum werden die Popup-Fensterchen so transparent dargestellt, dass man kaum was lesen kann? Und wieso gibt es keine deutsche Menüführung? Und das bei einem deutschen Autoren!? :-( Strange...

### 5/5 — VMG(VMC) を計算してくれる Harry's GPS Sailer

*2009-06-14*

セーリングのキモはＶＭＧの把握。次善の策としてターゲットスピード表があるけれど、自分の船専用のものを作らなくてはいけないし、いろいろややこしそうだな〜と思っていたら、デンマークから新しいセーリング用の iPhone アプリが発売された。なんとＶＭＧ（ＶＭＣ）を常時 iPhone 上に表示してくれるという。こいつが最大になるように舵を取っておればいいのだ。これ便利そう：

quote:
iPhone Apps - Harry's GPS Sailer | Apptism: "while navigation is started, deviation from course, distance to waypoint, and velocity made good (VMC) is displayed continuously" : unquote

ヨット用の航海計測電子機器にＶＭＧを計算するのがあるが数十万円もする。これを買えばわずか３００円。iPhone はすごい！
その他、ヒール角度の警告ランプや、ROW (Right of Way) 警告ランプとか、信号旗一覧表なんかがあってご愛敬だが、こういう情報も意外と大切なんだよね。

## Frequently asked questions about Harry's Sailor

### What is Harry's Sailor?

Harry's Sailor is a GPS-based navigation tool designed as a sailing companion. It provides advanced features for sailors, including heeling visualization, racing rule guidance, and comprehensive navigation support.

### What devices is Harry's Sailor compatible with?

Harry's Sailor requires an iOS device featuring GPS, such as an iPhone or iPod touch. For iPod touch users, an external GPS mouse is necessary. A list of compatible devices is available on the developer's website.

### How much does Harry's Sailor cost?

Harry's Sailor is a paid application, priced at $2.99. This one-time purchase grants access to all its navigation and sailing features.

### Does Harry's Sailor have ads?

No, Harry's Sailor does not contain advertisements. As a paid application, it offers an ad-free experience for its users.

### What kind of navigation features does Harry's Sailor offer?

Harry's Sailor provides full navigation support, allowing courses to be defined using polar coordinates, waypoints, or a given course. It integrates with Google Maps and continuously displays deviation from course, distance to waypoint, and velocity made good (VMG).

### Can Harry's Sailor record trips?

Yes, Harry's Sailor includes a full trip recorder. This feature logs statistics, ports visited, and allows for Google Earth export of your sailing routes.

### How often is Harry's Sailor updated?

The latest version of Harry's Sailor is 25.0.0, which was last updated on May 6, 2025. This indicates a commitment to regular updates and feature enhancements.

### What is the age rating for Harry's Sailor?

Harry's Sailor has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger individuals interested in sailing or navigation.

## Version history (last 5 releases)

### 25.1.0 — 2026-06-24

User Interface
- fixed dragging POIs in Map
- added option to scroll buttons in case available buttons do not fit screen width

Sensor support
- added support for Haze GNSS sensors
- added heading support for NMEA sensors w/o RMC (like Columbus)
- fixed a bug in CSV headers

### 25.0.0 — 2025-05-06

- reimplemented support for RaceBox Mini, Mini S and added RaceBox Micro
- added support for RTK GNSS sensors
- added support for Columbus P-70 Ultra sensor
- change accuracy precision to centimeters / inches
- added support for NetRTK / NTRIP casters
- completely new and full localizations for Japanese, Chinese (traditional, simplified), Spanisch, French, Italian
- made NMEA parser more resilient to changing sentence pattern
- updated list of iPad/iPhone models (M4 iPad, iPhone 16)
- fixed a bug in day / night weather icons
- fixed order of parameters in Sensor Configuration dialogs 
- improved BTLE write operations
- improved NMEA sentence displays
- dozens of minor fixes, improvements, features

### 24.9.1 — 2024-06-30

- reworked routines checking available storage
- use expert setting "Low Memory" to remove all storage checkings

### 24.9.0 — 2024-05-05

- replaced deprecated acceleration framework
- rechecked Racebox integration to deliver high update rates

### 24.8.2 — 2023-06-30

- Added support for Racebox Mini S
- Added an Expert Setting to adjust the number of minutes recent fixes are displayed in Map View

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## More apps by Harald Schlangmann

- [Harry's LapTimer Rookie](https://appshunter.io/ios/app/harrys-laptimer-rookie/id307688598)
- [Harry's GPS/OBD Buddy](https://appshunter.io/ios/app/harrys-gpsobd-buddy/id320423931)
- [Harry's LapTimer Petrolhead](https://appshunter.io/ios/app/harrys-laptimer-petrolhead/id338257907)
- [Harry's LapTimer Grand Prix](https://appshunter.io/ios/app/harrys-laptimer-grand-prix/id363556704)
- [Harry's Camper](https://appshunter.io/ios/app/harrys-camper/id952167017)

All apps by Harald Schlangmann: https://appshunter.io/developer/307688601

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*