Honestly the biggest thing for me is the auto billing and payment error follow up, that alone probably saves me a few hours a month not having to chase parents down about failed cards. Setting up events for rank testing is so much easier too, I just set it up once and parents/students sign up themselves in the app instead of me texting everyone individually. The auto generated certificates and scoring papers thing is small but it's actually huge, I didn't realize how much time that used to take until it was automated. Support has been really good, they'll actually pick up the phone or text back which is more than I can say for other software I've dealt with before. They keep adding stuff too, feels like every couple weeks there's something new (face recognition check in and the scoring system for testing weren't even a thing when I first started using it, now they're both there and honestly pretty useful). Also switched partly because of the fees, credit card processing was cheaper and the monthly cost overall was less than what I was paying with my old setup (I had separate billing software and a separate management system before, now it's just one thing).

I really like MAS9 for its student tracking and management features for my Taekwondo school. The billing system is particularly great as it makes it easy to collect and schedule monthly membership payments. The belt testing system is also a standout because it allows me to create and send or print certificates immediately and share evaluation scores for students. Additionally, the member app is a big plus, as it lets students practice with our curriculum videos, sign up for events, and buy merchandise from home. I also appreciate the awesome customer support and how quickly they update things. The initial setup was pretty easy with their help on data transfer, and I find the features better and more powerful than those of Kicksite and AMS, with a better user experience than Spark.