i would give this app 100 stars if I could!! I used this app to study for my CST certification exam and I passed on my first time taking the test! This is literally the only resource I used to study 3 weeks before my test and it helped me so much! They have actual questions that were on my exam! Best app to use to study! If you go through it daily you will pass your exam!

Updated the app and now it won’t work anymore

Doesn’t work on my ipad yet I bought it and the app says my ipad is compatible. I have it downloaded on my iPhone and it works but not my ipad! Very upsetting that I can’t study on my ipad when I payed for it. When I open the app it just shows my progress but doesn’t let me study any of the subjects !!!

Great app for setting me up for success for my up coming CST exam at the end of my phase 2 of army training!

Thank you guys for the app! I had a couple of complications and their support team was very helpful. I enjoyed the feedback per options as to why it’s correct or incorrect!!

I’ve tried many CST apps and this one seems to be the one. I take my exam on April 18 2025 and I’m putting my faith in CST Mastery. Good luck everyone

This app is great for study review get it and buy it

I would give it 5 stars but it doesn’t the quick review “Review Concept” like the book does. So I have to still carry the book and use the app at the same time

Everytime i try to subscribe to a plan it freezes.

I just rested after many years. I bought the book first but it was kinda overwhelming and a lot to carry around. This was always with me since I always had my phone. The app breaks everything down into categories - lets you rate if you knew the question or not - It gives you every rationale behind the answers - gives definitions for each answer - you can go back and revisit items you need to review. This app is great! I felt very prepared and passed with flying colors. 👍🏼