Race Sailing Tack Optimizer vs NMEAkit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Race Sailing Tack Optimizer
Optimize your sailing performance on up/down courses. This app uses GPS to calculate your course over ground and speed, factoring in conditions like current. It provides visual cues for your tack and helps you sail the best VMG to reach marks faster.
- GPS-based course and speed calculation
- Optimizes VMG for upwind and downwind sailing
- Visual tack indicator (color-coded)
- Considers current and wind conditions
- Inspired by RaceMaster TacTic compass
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Race Sailing App to help you be the fastest boat on the race course. Mostly for up/down courses. This app is inspired by the RaceMaster TacTic compass and gives you similar information. The course over ground and speed is determined by GPS this way taking fx current into consideration. You can see if you are sailing the best vmg when tacking and when you sail downwind fx in light conditions you also optimize the vmg for getting down to the gate/bottom mark first :) The display changes color telling you which tack you are on. So green means you are on a starboard tack. This is only when you are using the app in vmg mode where you have set the course towards the top mark. Use the app to help you giving you some more information while sailing. Remember that finding the stronger wind and doing the right decisions is more important than looking at instruments. Happy racing - and remember to have fun doing so ..../)
NMEAkit
This app calibrates wind, pitch, and roll data when used with a NMEAkit device. It offers a rotating mast option to compensate for mast orientation, making data available via NMEA2000 or NMEA0183 gateways.
- Calibrate wind, pitch, and roll
- Rotating mast option
- Compensate mast orientation
- NMEA2000/0183 gateway compatibility
- Works with NMEAkit device
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This application works only with NMEAkit device. The app can calibrate Wind, Pitch and Roll from OpenWind and if the NMEAkit unit contains a compass, you can use the rotating mast option: Align the NMEA kit with the boat's heading, enable mast rotation and calibrate the mast 0° position. The rotation of the mast will be compensated and the information available in NMEA2000 of NMEA0183 gateway.
Screenshots
Verdict
The clearest difference is price: NMEAkit at Free against Race Sailing Tack Optimizer's $0.99. NMEAkit also leads on update cadence (every 5 days vs every 2 months) and review sentiment (50% vs 25%). On ads, in-app purchases, device support and iOS requirement 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
NMEAkit is free to download; Race Sailing Tack Optimizer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Race Sailing Tack Optimizer ships an update every 2 months, NMEAkit every 5 days. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.
| Parameter | Race Sailing Tack Optimizer | NMEAkit |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 3.0 (2 ratings) — better |
| Positive reviews | 25.0% of reviews | 50.0% of reviews — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 11 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Flemming Jensen | Michael Liesenberg |
Customer experience
Race Sailing Tack Optimizer
NMEAkit
In-app purchases
Race Sailing Tack Optimizer
No in-app purchases
NMEAkit
No in-app purchases
Questions
Is Race Sailing Tack Optimizer free?
Is NMEAkit free?
Do Race Sailing Tack Optimizer or NMEAkit have ads?
Which is updated more often, Race Sailing Tack Optimizer or NMEAkit?
Other comparisons
