Hi, I'm not the developer of ROLL but yes, this prototype was inspired by ROLL, which as you can tell is a game I enjoyed a lot.
The core concept of Card Draw, however, is having cards in a deck with mathematical symbols that you can use to you create equations that generate points: this concept is widely explored in various different game modes in the full version of the game (still in development), with some already available in the Steam demo, which I recommend you check out if you liked this prototype version of the game (here's a link: https://store.steampowered.com/app/3409750).
In the other game modes, the similarities with ROLL, being mostly a clicker game, fade away: in STRATEGIC mode for example (already playable in the demo on Steam) you can actively choose where to place the cards you draw to optimize the equation you create and thus get the highest points possible from each draw, which transforms the gameplay loop of the default RELAXING mode (playable in this prototype on itch), based instead on a simple "clicker" mechanic. Other game modes in the future won't even have an in-game shop to get new carda and abilities, thus basically removing the similarities with ROLL altogether (apart maybe from the particles animation, which isn't even something inspired by ROLL but rather by another game I love, and that you probably also know, called "Luck Be A Landlord").
Also, just to clarify, I've been in touch with ROLL's dev and he is happy about Card Draw being inspired by ROLL. He also gave me tips and suggestions on how to improve some aspects of the game based on his experience with ROLL. He is a very nice guy.
Hope this clears everything out, and thank you for playing :)