Wärtsilä Pilot PRO vs Klamp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Wärtsilä Pilot PRO
This application provides advanced navigational tools for maritime professionals, including deep sea, channel, river, and harbor pilots. It supports various chart formats and integrates with GPS and AIS sensors for precise positioning and data logging.
- AIS Class A and NMEA sensor integration
- TX-97, S-63, and S-57 chart support
- Docking Mode and Conning Display
- Fore & Aft Speed and COG vectors
- Extended Data Logging and Playback
- Route and Track creation/monitoring
- AIS Target presentation and calculations
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Wärtsilä Pilot PRO is the application intended for everyday needs of deep sea, channel, river and harbour pilots and other maritime professionals. The Pilot PRO operates on iPad utilizing the AIS Class A or 3rd party NMEA sensors via Wi-Fi, built-in or external Bluetooth GPS for backup positioning purposes. The application runs on Transas TX-97 vector chart format recognised worldwide as one of the most accurate and reliable sources of navigational information and also supports S-63 / S-57 ENC formats. • OS and HW requirements: - OS Apple iOS 10.3.x and higher - Recommended iPad devices: iPad mini 2 and higher, iPad Air 9,7" and higher, All iPad PRO models • Positioning systems, NMEA Heading and Rate-Of-Turn sensors: - iOS (iPad built-in GPS) - AIS Class A transponder - 3rd Party NMEA sensors over Wi-Fi • Pilot Specific Features: - Docking Mode - Conning Display - Fore & Aft Speed and Resulting COG vectors - Own Ship Predictor - Automatic Distance Lines for berthing and mooring - Fender Lines - Virtual Boarding - Extended Data Logging and Playback - AIS Target Meeting Points & Rendezvous Points (RDV) on a selected route - CPA-TCPA and BCR-BCT calculations - Secured AIS Data option, integration with the Wärtsilä Ship Traffic Control solutions - ROT beeper and Vessel Parking System audiovisual signals • Chart Data: - TX97 chart folios and monthly chart updates. Direct online installation of charts and updates from the server - S-63 AVCS and S-57 ENC Chart support • General Functionality: - Display of Charts, Routes, Track(s), Fender Lines and User Objects - North Up, COG Up, Head Up and Route Up chart orientations - Monitoring of navigational data: Position, HDG, ROT, Course (COG) and Speed (SOG) - Route creation by the graphic and tabular methods - Waypoint monitoring: Bearing to WP, Distance to WP, XTD, Time-To-Go and ETA - Schedule information: Time-To-Go and ETA to any selected waypoint ahead - AIS Target presentation on charts: Target contours, dimensions and information - Multi Units and Multi Language support - Alarm monitoring functionality - Route, Track, Fender Line and User Object: Export/Import via GPX, KML, KMZ and RTZ formats - Day and Night chart palettes • Extra Modules: - Advanced Data Module option: Weather Service, Tides and Tidal Currents, Internet AIS Service - E-Nav Module option: Secured AIS Feed from VTS, AIS Meteo Data, IHO S-124 NW areas support - Advanced NAV Module option: Echo-Sounder and Wind Sensor support for onboard connections Wärtsilä Pilot PRO app is only available through the App Store to the registered users. NOTE: Continued use of the GPS running in the background can dramatically decrease the battery life. Wärtsilä Pilot PRO app may use your location even when it isn’t open, which can decrease device battery life. Any questions? Feel free to contact us at pilotpro.support@wartsila.com Sincerely Yours, Pilot PRO team
Klamp
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Your berth sits empty while you are out sailing. And somewhere nearby, a visiting sailor is looking for somewhere to tie up. Klamp is the digital version of the green/red plate. Flip your klamp as you cast off — others can see the berth is free, and you come home to a harbour that is alive. HOW IT WORKS Flip the klamp One tap as you sail out. Say when you are back, so the guest knows exactly how long the berth holds. If your plans change, the change lands straight away — on the chart, in the harbour and on the berth. Find a berth Free berths glow green on the map. No booking, no fee — you moor on trust, the way sailors always have. You have to be at the berth to take it, so first come, first served means actually coming first. The sign ties it together Print the QR sticker from the app and fix it to the mooring post. Anyone walking past can scan it and see at once whether the berth is free — even without Klamp. ON THE WATER Depth lies in soft contours beneath the boat, and when you plot a route you are told the shallowest measured point on every leg before you sail. Drop the anchor and sleep. The anchor watch remembers where the anchor went down and wakes you with an alarm of its own if the boat drifts out of the circle. And if you are ever unsure what a buoy is telling you, the seamarks are explained in the app's own reference book. And if someone goes overboard, one tap saves the point from the phone's GPS and shows the course back — the coordinate is laid out to be read aloud on VHF. Klamp does not place calls: channel 16 and 112 are the way to help. THE HARBOURS Over 10,000 harbours in 23 countries — from Norway and Finland to Portugal and Greece — with toilets, showers, power, water, fuel and a crane, where we know of them. Many carry a description gathered automatically from the harbour's own website; it always shows its source and date, so you can see where it came from. Save your favourites, keep your own notes, and let the app remember your recent searches. Your boat's dimensions are stored, so you are warned when a berth is too small — but we never hide it from you. Karma and klamps are the sailors' own way of saying thank you. And if you want the app to yourself, you can lock it with Face ID. Klamp speaks English, Danish and Swedish. KLAMP+ Wind drawn across the chart, so you can see what you are mooring into. Navigation with the instrument on the Lock Screen: speed, cross-track error and arrival time that keep telling the truth while the phone sits in your pocket. Watch the harbours you are heading for. Book ahead. And your own logbook with track, speed and distance. Weather on every harbour: a ten-day forecast, a tap on the day unfolds the hours. Your logbook follows you across your devices through your own iCloud — never through us. Keep two berths? Manage both from one account. 39 DKK/month or 249 DKK/year; the price in your currency is shown in the App Store. The subscription renews automatically until cancelled in your App Store settings. Sharing your own berth is free — and always will be. PRIVACY, TAKEN SERIOUSLY "The berth is free until Friday" also means "the owner is away until Friday". That is why we never show who owns a berth, and your name is shared only if you say so. When you confirm you have arrived, we work out the distance and throw the coordinate away — it is not stored. If you share your passage on Ahoy, it happens only with your explicit yes: only your latest position sits on the server, others can see it for ten minutes at most, and strangers never see anything but an anonymous dot. One tap removes it entirely. No ads. No tracking. No advertising networks. We host in the EU, and everyone else who touches data is named openly in the privacy policy. Klamp cannot promise you a free berth — only show you where one is right now. Made by sailors, for sailors. Fair winds. Privacy policy: https://klamp.app/privatliv Terms of use (EULA): https://klamp.app/vilkaar
Screenshots
Verdict
The clearest difference is update cadence: Klamp at weekly against Wärtsilä Pilot PRO's every 2 months. Wärtsilä Pilot PRO's advantage is iOS requirement (15.8 vs 17.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Wärtsilä Pilot PRO ships an update every 2 months, Klamp weekly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Wärtsilä Pilot PRO | Klamp |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3 ratings) — better | — |
| Positive reviews | 36.4% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 15.8 — better | 17.0 |
| Further details — not scored | ||
| Size | 73 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Wartsila Voyage Sweden AB | Vizion Holding ApS |
In-app purchases
Wärtsilä Pilot PRO
No in-app purchases
Klamp
No in-app purchases
Questions
Is Wärtsilä Pilot PRO free?
Is Klamp free?
Do Wärtsilä Pilot PRO or Klamp have ads?
Which is updated more often, Wärtsilä Pilot PRO or Klamp?
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