Going to start off by saying that I know nothing of Mob Psycho 100 so if you want a review from someone who actually has dealt with this franchise you should skip this.
This game plays exactly like the OPM game that came out a few months ago.The graphics are slightly lower in certain areas but for the most part it looks the same. It feels as if they copied/pasted the mechanics. The only real difference is the franchise.
The gacha has a range of units and there aren't many SSRs. You get enough to do like 3 or 4 singles. The tickets you get have a shit rate of 1% in order to roll an SSR.
If you liked the OPM game you will like this otherwise don't bother with it.