Comparison

Sailserver vs Port King

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sailserver

This app automatically logs your sailing trips, providing an online, up-to-date record. It also monitors your boat's position and alerts you to changes, and allows you to share your sailing adventures with friends and family.

Highlights
  • Automatic sailing logbook
  • Boat position monitoring and alerts
  • Share sailing trips with friends/family
  • Connect with and follow other sailors
  • View nearby boats in the Clubhouse
  • Detailed weather map and forecast
  • Connects to boat instruments (NMEA 2000/0183, SeaTalk)
Features
Read full description

Automatic Logbook Sailserver automatically keep a logbook, each time you go sailing. The logbook can be viewed online and is always up to date. Anchor Watch and Monitor Sailserver monitors your boat when you are not onboard. Get notified when there are any changes in your boat’s position, wind speed or water depth. Share your passion for sailing. Friends and family can view the boat’s logbook, and live data from your boat instruments, even while you are sailing. Ideal for both cruising or racing. Connect with your friends or follow other sailors Connect with your friends and see where and how they are sailing. Or follow your favorite sailors when they are racing or on a long cruise. Meet other sailors When you enter the Sailserver Clubhouse you can see other boats near you and they can see your boat. Weather map Show a detailed weather map and forecast for the boat’s position. Connects to the boat instruments Sailserver can be connected to the boat instruments and collects data like wind direction and speed, water depths and temperature, Speed through water, boat heeling and much more. All data can be viewed online and are used to make a very detailed logbook. Sailserver connects to most brands like Raymarine, Garmin, B&G or other boat instruments with NMEA 2000, NMEA 0183 or SeaTalk Interface. Before using the Sailserver app please create a free account on sailserver.com. Some of the features in the Sailserver app are limited or not available without a Sailserver installed in your boat. If you do not have a boat with a Sailserver installed, you can still use the Sailserver app to follow or connect to other sailors with a Sailserver onboard. Read more about Sailserver and how to install it here: https://sailserver.com

About

Port King

Learn and master safe port and anchor maneuvers with 28 instructional videos. This app provides clear guidance for various docking and anchoring situations, designed by experienced skippers to ensure stress-free port entries and exits for all skill levels.

Highlights
  • 28 instructional videos
  • Harbor and anchor maneuvers
  • Docking/undocking alongside
  • Mediterranean mooring
  • Docking/undocking on piles
  • Anchoring at sea/harbor
Features
Read full description

Harbour manoeuvres without the stress – even with a crew of two. 28 narrated videos show casting off and berthing, mooring lines, piles and anchoring, explained by experienced skippers. FREE OF CHARGE • 7 of the 28 manoeuvre videos: the straightforward case in every category • VHF radio reference: Mayday, Pan-Pan, Sécurité, radio check – based on SRC and UBI topics • NATO alphabet and a German/English/French glossary • Right-of-way and collision-avoidance rules, sea marks, distress signals • On-board checklists • Converter: knots, km/h and m/s with the matching Beaufort force, plus nautical miles, feet, temperature and weight • The complete blog with tips and tricks Safety knowledge is not behind the paywall in Port King. WITH PORT KING PRO • The remaining 21 manoeuvre videos: the same manoeuvres in stronger wind • Flashcard training: NATO alphabet, radio messages and vocabulary • The radio message generator: ready-made messages for your own boat • The in-depth articles on the Beaufort scale and sea state HOW THE VIDEOS ARE ORGANISED Seven categories: alongside, mooring lines and piles – each one casting off and berthing – plus anchoring. In the six manoeuvre categories, four videos each show the same situation in different wind conditions; for anchoring, four steps from the basics to berthing with a bow anchor. The first video of every category is free. Port King Pro is a one-time purchase, not a subscription. ALSO INCLUDED • German and English • Dark mode • Wall of Fame: when we implement a suggestion, we are happy to name the person who sent it – only if they want us to • Notifications only if you want them DID YOU BUY PORT KING EARLIER? Port King was a paid app until August 2026. If you bought it back then, Port King Pro is unlocked for you at no extra cost – in most cases the app detects this by itself. If not, get in touch via More → Feedback. Watch the manoeuvre beforehand – as often as you like, even on the pontoon just before you cast off.

Screenshots

Sailserver4 screens
Port King4 screens

Verdict

The call

The clearest difference is monetization model: Sailserver at free against Port King's paid. Port King's advantage is update cadence (monthly vs every 8 months) and review sentiment (71% vs 50%). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sailserver ships an update every 8 months, Port King monthly. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 5 level
Sailserver versus Port King: the parameters behind the verdict, then further details
ParameterSailserverPort King
PriceFreeFree
Positive reviews50.0% of reviews71.4% of reviews — better
Update frequencyEvery 8 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size53 MB35 MB
Age rating4+4+
DeveloperSailserver ApsSkipperfriends

Customer experience

Sailserver

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Port King

Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

In-app purchases

None

Sailserver

No in-app purchases

None

Port King

No in-app purchases

Questions

Is Sailserver free?
Sailserver is free to download, with no in-app purchases.
Is Port King free?
Port King is free to download, with no in-app purchases.
Do Sailserver or Port King have ads?
Neither Sailserver nor Port King shows ads.
Which is updated more often, Sailserver or Port King?
Sailserver ships an update every 8 months, and Port King monthly. Most recently, Sailserver was updated on October 3, 2026 and Port King on October 14, 2026.

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