Once I made a more conscious effort I started to notice the benefits. It was pretty cool seeing a visual indicator whenever I would push a brake zone, or when I would carry more speed into a corner, etc. It took a few laps to calibrate itself to my driving but after that it was pretty accurate. It also took a few sessions for me to understand what lights before, during, and after a corner meant and I had to refer to their guide a few times before I got it all. It’s a pretty sophisticated tool and really does help.
Usually I get this feedback from the car or the +/- on my AIM Solo and it was pretty in sync with both of those options. The light colors and brightnesses are customization to your preference. I could definitely see this allowing you to improve as a driver, especially if you want instant feedback. Morning sessions are usually the fastest so having feedback for the later/hotter sessions isn’t very useful sometimes.
I was using a used unit, but the battery did die on me. I had it fully charged before the weekend and it died after four sessions. I would turn it on at grid and off once I turned the car off, so about 100 minutes of driving time. That was a little disappointing since I did not have the means to charge it and had to resort to not using it for the rest of the weekend. For comparison, my AIM Solo2 was at 65% of charge during the same usage period. I usually charge the Solo2 before a track weekend and never touch it again. I also have a hardwired charger in the car for emergencies, so I would have to do the same for the ApexPro.
In conclusion, I would both recommend and not recommend the unit depending on your personal situation. If you do not currently have a dedicated lap-timer and own an iPhone, then I would recommend getting this unit. The price seems steep at first, but it does have value. It will give you tips on how to improve real time, and those tips are accurate. The datalogging feature seems like the best I have seen thus far, and the social aspects make it even more fun.
If you do not have an iPhone or already own an AIM Solo or something similar, then I don’t think the Apex Pro offers enough to justify the cost. Without the datalogging, there isn’t much meat to justify the cost. Then if you own an AIM Solo, like in my case, it does a lot of the same things, but by using two different devices. I like as little things as possible as everything needs to be charged, setup before a session, and monitored. I think their way forward should be having a timing display below the lights and packaging it into one unit. Then I could just replace my AIM Solo, but I am not going to go back to running both a phone and the APEX Pro.
I hope this is helpful and helps on your purchase. If you have any questions, feel free to post or reach out to me.