So I paid the ransom. Lets face it, 65 for an app is more than we are used to paying. Im not sure who wrote those other reviews, but it would seem they work for NK. Lets start with the pros. Its accurate. If you want to measure a 2000 meter course, this will be pretty much right on, or at least as close as you will ever need to be. So for total distance and time, and thus ave/500 it is great. So to run your interval workouts it will work too. A major plus is the check and bounce meter. 20 years of rowing, and I have never seen that. Go ahead and back those blades in, too much and you actually start increasing check. It takes just the right amount... Neat. (BTW, NK why didnt you think of that in your old school coaches?)
As for the cons, number one and the only point in my review that matters. IT IS NOT ACCURATE FOR YOUR CURRENT SPLIT/500. The reason for this isnt NKs fault. GPS is accurate +/- 6 feet or so. ( Intentionally scrambled per the US military to give our troops the edge) Other running and biking programs have the same current spedometer problems. Good enough to measure a 2k course. But not so for these 3 strokes compared with the last 3. Example: With a green gps lock, on a wide open reservoir, Im rowing at a constant speed, my old school speed coach is staying right at 2:30 and my iphone might say 2:13 then 2:39. At the end of the row, the averages are the same as then the iphone is using total distance and time, but what you really need a speed coach for is what you are rowing NOW! Its like being on the erg with no splits! So basically useless in the way most of us use a speed coach. This limitation is not NKs fault, but CHARGING $65 FOR A USELESS SPEED COACH IS! My advice, get a free running or biking app and calibrate your impeller driven speed coach. This app isnt worth the $.