Comparison

OnboardAssistant vs RaceData2

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

Head to head
About

OnboardAssistant

Features
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OnboardAssistant is a handy little tool for yacht racing which will complement your onboard electronics and let you get rid of wet notes. It will let you ping sail changes, race times, changes in boat configuration, incidents, performance comments and any other important user-defined event which is not captured directly by your electronics. It also lets you take pictures, record audio and video while you are out on the water. Once your sailing session is complete you can review and update your notes and upload it all to the cloud. Once in the cloud, the data can be accessed by a number of thrid party tools such as SailingPerformance's RaceReplay. All your data will then be automatically be loaded and synchronized, ready to be analyzed! Terms of use available at: https://www.advancedsailingperformance.com/oba-terms-service.html

About

RaceData2

This app transforms your iOS device into a sailing instrument display, showing real-time navigation and performance data from Expedition software. It offers customizable data pages, advanced graphs, and remote control capabilities for racing sailors.

Highlights
  • Real-time sailing data display
  • Customizable data pages and layouts
  • Advanced data graphs with trend analysis
  • Remote control of Expedition software
  • Apple Watch data display
  • Night mode and screen-always-on option
Features
Read full description

Transform your iPhone, iPad or Apple Watch device into a powerful sailing instrument display for Expedition Navigation Software and NMEA0183 data. RaceData2 (RD2) puts critical racing data at your fingertips, delivering real-time performance metrics from Expedition directly to your iOS phone or tablet via WiFi. Bonus is the bundled Apple Watch RaceData3 (RD3). Whether you're racing around the buoys or offshore, stay connected to navigation data with customisable, easy-to-read displays designed for racing. KEY FEATURES Real-Time Data Display - View any Expedition data channels including User and Alt channels with automatic name detection - Multiple data pages with swipe navigation - Customisable grid layouts and data colours - Live data status indicators show connection quality at a glance - Dark theme optimised for day and night sailing Advanced Data Graphs (Subscription) - Track performance trends with real-time graphs - Adjustable time windows: 1, 5, 10, or 30 minutes - Moving Average (MA) and Exponential Moving Average (EMA) trend lines - Visual shading between actual data and trends - Monitor multiple channels simultaneously Race Commands (Subscription only and not with NMEA0183, A+T, iDataNet) - Control Expedition from your device - Ping start line ends (Port/Starboard) - Ping new marks, and move the Active Mark to your bow/gps - Set up and create W/L race courses - Set race timer (1, 4, 5, 10 minutes or custom) - Sync timer to nearest minute - Kill race timer - Mark management - set W/L course, ping new or active mark, advance to next, or return to previous - Set Expedition Events - Emergency MOB (Man Overboard) broadcast - Command acknowledgement (requires Expedition 12.6+) Designed for Racing - Screen always-on option keeps data visible - Night mode - Use proximity sensor to turn screen off when iPhone is stowed - App pinning locks RD2 on screen - Data lock prevents accidental changes - Page lock maintains your preferred layout and allows fullscreen - Demo mode for testing setup without Expedition connection - Simple, clear RD2 watch app data pages Compatibility - Engineered to work with Expedition Navigation Software - Any system broadcasting Expedition format UDP data such as A+T Instruments - iDataNet for legacy systems - NMEA0183 UDP data - Works over standard WiFi networks Apple watch - Paired with your iPhone, receive and display all data. - With the RaceData3 Bridge PC application, your iPhone can request and receive Expedition data over WiFi. Leave your phone ashore. Visit https://www.fieldyachting.com/apps to download the Windows app. SUBSCRIPTION Free Features: - Display up to 4 channels (TWS, TWD, HDG, BSP) - Single 2x2 data page - Demo mode Subscription Features (Annual): - All Expedition channels - Multiple page layout options - Real-time data graphs with trend analysis - Command and MOB sending to Expedition PERFECT FOR: - Racing sailors who need navigation data away from the nav station - Crew members who need specific data for their position - Navigators wanting a wireless repeater display - Coaches monitoring performance from chase boats - Anyone using Expedition who wants mobile data access - Additional on deck or below data display - Add a waterproof case to your iOS device and have a new on-deck display REQUIREMENTS - iOS device on same WiFi network as Expedition computer - Expedition, iDataNet or NMEA0183 broadcasting UDP data on the network - Expedition configured to broadcast UDP data (RD2) and TCP data (RaceData2 Bridge Windows app) - iOS 16.6 or higher - watchOS 10.0 or higher SUPPORT Comprehensive user guide available at: https://www.fieldyachting.com/apps Developed by sailors, for sailors. RaceData2 is actively maintained by Field Yachting Ltd with regular updates based on user feedback from the racing community. View terms of use here: https://www.fieldyachting.com/app-store-terms-of-use

Screenshots

OnboardAssistant4 screens
RaceData24 screens

Verdict

The call

The clearest difference is in-app purchases: OnboardAssistant at none against RaceData2's 1. OnboardAssistant also leads on iOS requirement (14.0 vs 16.6). RaceData2's advantage is update cadence (every 6 days vs every 5 weeks). On price, ads 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. RaceData2 sells 1 in-app purchase, starting at $69.99 per year. OnboardAssistant asks for nothing beyond the download.

UpkeepUpdate frequency

OnboardAssistant ships an update every 5 weeks, RaceData2 every 6 days. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 7 level
OnboardAssistant versus RaceData2: the parameters behind the verdict, then further details
ParameterOnboardAssistantRaceData2
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 5 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS14.0 — better16.6
Further details — not scored
Size50 MB7 MB
Age rating4+4+
DeveloperSailingPerformance S.LField Yachting Ltd

In-app purchases

None

OnboardAssistant

No in-app purchases

1 purchases

RaceData2

Subscriptions1
  • RD2 Annual Subscription$69.991 Year

Questions

Is OnboardAssistant free?
OnboardAssistant is free to download, with no in-app purchases.
Is RaceData2 free?
RaceData2 is free to download, with in-app purchases available.
Do OnboardAssistant or RaceData2 have ads?
Neither OnboardAssistant nor RaceData2 shows ads.
Which is updated more often, OnboardAssistant or RaceData2?
OnboardAssistant ships an update every 5 weeks, and RaceData2 every 6 days. Most recently, OnboardAssistant was updated on September 20, 2026 and RaceData2 on September 14, 2026.

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