Literally the best math training game!
I tried many other but this one is the best for me because: 1) fully customizable playing sessions - the range of values for the equations, amount of questions, style of questions and SO MUCH MORE options! 2) instant feedback for inputs and answers - other apps have slow animations or delay between questions, but this one have both good animations WITHOUT EVEN DELAYING THE NEXT QUESTION, u simply keep going and answering! 3) not just 12x12 timetables practice or simply addition and subtraction, but unlimited timetables through customization, roots, flash anzan and many more ALL IN ONE app! 4) U can send feedback, request or suggestion and he will reply quite quickly! And its quite impressive such an app is developed by an independent developer. It got good UI (even has info buttons that guide u what each options do) and good animations and color palette compared to other math app that look quite bland and boring. (Although I don’t care that much about this aspect) This is it if u want to practice mental arithmetic! Thanks for the app!