I've built free NCSF exam preparation tool.
It's a lightweight webpage adapted for desktop and mobile screens, simulates final exam with the same rules. But since it is made for education purposes, I have built-in muscle and muscle-group images, so that it helps you memorize. For Wrong and Correct answers explanations are immediately shown, along with references to the manual. Wrong/Correct answer counter is present. Also, you will have total of 3 hours to complete your test (same as the real one).
Each attempt draws 150 random questions from a pool of 409 verified practice questions covering anatomy, exercise technique, programming, nutrition, and client screening. Question order and answer options are shuffled every attempt.
You can find it at https://ncsf.50bar.app/
If there are issues with questions, answers, explanations or references - please do help me by submitting the issue on my github.
It is entirely free, no ads, hosted on Cloudflare Pages and costs zero money.
It is an educational tool. it is not a software in a direct sense, it doesn't require installation, just visit the page in your browser on PC or mobile, so it shouldn't go against reddit policy. I've built it to help myself memorize the materials and now I'm sharing it with everyone.