Blast Motion and Diamond Kinetics - Training (t-work, cage, games), Recruiting (is it used as a recruiting tool?), more...

I would say all of these are viable and should be utilized for video.  From what I can tell coaches don't seem dismissive of the results, particularly if you can show consistency.  We've used Pocket Radar primarily, but also Diamond Kinetics and Blast. All relatively inexpensive options and for the most part accurate. 

As far as the products - useful 

As far as the products being used on the recruiting trail - noise 

We talk a lot about recruiting on here and we break it down like it's science but the truth is that coaches either like what they see or they don't. Especially when it comes to position players. They either have a good swing and hit good pitching or they have no chance. 

If you want to use it to improve as a player then go ahead. If you want to use your attack angle and exit velo to make coaches interested I'd save the money. 

FWIW - I didn't think the DK ball was very good. 

update...used our Blast a little this past summer and now getting ready to train with it this fall/winter/spring. Going to try to dig deeper this time thru. Anyone now using this and having success with it from a training perspective?

Son had a private lesson with @FullerHitting last week (while visiting his sister in a who is in a hockey bubble at her college about an hour away in Massachusetts) and he reignited son's and my interest in Blast metrics. He uses it and now going to try to do work on some things learned at lesson.

Thank you in advance.

Blast is a really good way to set your phone up to take a short video of each swing.  That's about all i use it for.   I like some of the metrics.  Others not so much. 

Highly recommend  pocket radar with Bluetooth for video as a recruiting and training tool. Good for both hitters and pitchers, and can be used both in practice and in game. Compared to all the other dollars we have spent over the years pocket radar was best value! Bat sensors typically are a subscription service—subscription not required for pocket radar.

My kid uses blast for checking attack angle and bat speed. If you have resources to a hit trax or rapsodo facility, that is also very helpful. Pocket radar is a great option for both throwing velo and batting EVs, but radar placement is key for accurate readings