I've got 15,000+ hours in FPS games on PC alone.
I've got 1000+ hours on aim trainers, and countless hours on in-game practice.

I have played every aim trainer available on steam and without a doubt in my mind this is the best one by far.

It's super simple, easy to use and highly customizable.

It's easy to tract your own progress and has a highly competitive and regulated leaderboards.

If your serious about improving, this is what you should be using. (Best way to improve is also to play consistently day in day out not just in patches, its a great way to warm up)

Best money i have ever spent.