RayControl vs WilhelmSK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RayControl
View and remotely control your Raymarine e, c, ES, and Axiom Multi-Functional Displays from your iPad. Access electronic charting, sonar, radar, and thermal night vision with touch screen interaction and a virtual keypad.
- Remote viewing of MFDs
- Touch screen control
- Virtual slide-out keypad
- Control charting, sonar, radar, and thermal vision
- Wi-Fi connectivity
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About RayControl RayControl allows you to remotely view and control your Raymarine e,c,ES and Axiom Multi-Functional Display from your iPad. iOS Devices = Best performance achieved on iPad 2 or better. Multi-Functional Display software requirement – v 3.15 or later. Compatible displays (MFDs) – e,c,ES and Axiom range of WiFi enabled MFDs Remotely control and view electronic charting, sonar, radar, and even thermal night vision, right from your tablet. RayControl emulates Raymarine MFDs with touch screen interaction and a virtual slide-out MFD keypad. The slide out keypad gives you control of all MFD functions and the virtual uni-controller allows you to rotate through menus and adjustments effortlessly. To use this app please upgrade your Raymarine c-Series or e-Series Multi-Functional Display to software version 3.15 or later. Software upgrades are available for free at www.raymarine.com/support. Getting Started Download the RayControl app, and install it on your device. Next, connect to your Multifunction Display via Wi-Fi (see MFD operators manual for Wi-Fi setup details). When the Wi-Fi connection is established, launch the app. You should now see the same image on your mobile device as you do on your Raymarine c-Series or e-Series multifunction display. Note - autopilot activation/deactivation is not possible via a mobile device.
WilhelmSK
This app provides a customizable dashboard for monitoring and controlling boat systems. It integrates with various marine electronics and offers features like alarm notifications, autopilot control, and chart display.
- Customizable display and monitoring dashboard
- Integrates with Signal K Server and various marine devices
- Autopilot control and monitoring
- Active Captain Points of Interest display
- Alarms and push notifications
- Navionics chart display
- Customizable gauges and layouts
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WilhelmSK is a highly customizable display, monitoring and control dashboard for your boat. WilhelmSK works best wth Signal K Server . It can also connect directly to some devices: º NMEA 0183 over TCP or UDP. (from for example, Digital Yacht's Smart WLN10) º Any modern Navico (Lowrance, Simnet or B&G) GoFree MFDs º NMEA 2000 via Yacht Device's YDWG-02, YDEN º NMEA 2000 via Actisense W2k-1 or W2K-2 º Victron Venus GX or CCGX º Victron VRM º Chetco SeaSmart Devices º Chetco HelmSmart RayMarine and Simrad/B&G Auto Pilot Support (via node-server or the YDWG only, W2K-1) º View or change current mode º View current target heading or Wind direction º Change target heading or Wind direction Alarms and Notifications º View list of current current alarms º Push notification support * º Setup server side alarms * º Set an anchor alarm with the push of a button * Navionics Maps If you already have the Navionics Boating application with an active subscription, you can now use the same Navionics charts in WilhelmSK. Ensure you are a registered user with Navionics and have a Username and Password. If you have not registered, go to the Navionics Boating App’s Main Menu, click on the top “Me” option and then click Login. In WilhelmSK click the login button on the bottom right of the map and enter your Navionics login information. Features: - Raymarine MFD: display and interact with a RayMarine MFD (discovered via Bonjour) - Fusion stereo (control zone volumes, source input, play, pause etc.) - Create a gauge for any value available via SignalK - Sophisticated anchor alarm (requires node server and signalk-anchoralarm-plugin) - Customize gauge display using SignalK meta.zones - Customize gauge range, min/max, etc. - Save custom gauges to node server or the cloud for use on other devices - Wind Angle gauges can optionaly be rotated so that they always point ot the bow of the boat, regaurless of device positioning - Place gauges by long pressing on a gauge and choosing a differnt one - Make a gauge full screen by double tapping - Multiple layout support. Create a differnt layout for Steaming, Sailing, Home Monitoring, etc. - Customize the nuber of pages and their layout - Manuall connection configuration synced accross devices via iCloud - Automatic connection selection based on current ip (usefull when Bonjour is not available and you have multiple boats) - Two themes, dark and light - Animated gauge needles - iPad Slideover and Split View support (Your gauge configuration can be customized for these views) - Connections can be configured to be refreshed manually or at a specific time interval - Design your own custom gauge templates - Share your custom templates via Air Drop, eMail, Text, etc. - Edit ApplyTV or other device layouts and templates remotely using your iPhone or iPad - Most gauges can be configured to be digital or analog - Enter the SignalK path and title for any gauge to show data not supported by default - Displays AIS targets in the Map views - Configure node server plugins inside of the app - IP and RTSP camera display * Some advanced features require signalk-server-node and special plugins installed. Setup Instructions at https://github.com/sbender9/wilhelmsk-node-server-setup
Screenshots
Verdict
The clearest difference is price: RayControl at Free against WilhelmSK's $19.99. RayControl also leads on iOS requirement (8.0 vs 13.0). WilhelmSK's advantage is rating (4.5 vs 3.3) and review sentiment (80% vs 42%). On ads and in-app purchases 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
RayControl is free to download; WilhelmSK costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
WilhelmSK holds the better App Store score, 4.5 against 3.3. Both are backed by a comparable volume of ratings — 7 and 28 respectively. Written reviews point the same way: 42% of RayControl's written reviews are positive against 80% of WilhelmSK's.
RayControl ships an update every 16 months, WilhelmSK every 2 months. The most recent releases landed on September 30, 2026 and October 15, 2026 respectively.
| Parameter | RayControl | WilhelmSK |
|---|---|---|
| Price | Free — better | $19.99 |
| Rating | 3.3 (7 ratings) | 4.5 (28 ratings) — better |
| Positive reviews | 41.7% of reviews | 80.0% of reviews — better |
| Number of ratings | 7 | 28 — better |
| Update frequency | Every 16 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #84 — better |
| Devices | iPad | iPhone, iPad, iPod, Apple TV, Apple Watch — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 23 MB | 118 MB |
| Age rating | 4+ | 4+ |
| Developer | Raymarine UK Limited | Scott Bender |
Customer experience
RayControl
WilhelmSK
In-app purchases
RayControl
No in-app purchases
WilhelmSK
No in-app purchases







