Our history
ArithRush began when its creator was preparing for quant interviews while friends were preparing for consulting interviews. Across both paths, the same gap kept appearing: quick arithmetic and numerical judgment mattered, but these skills were rarely practiced with the same intention as the rest of the interview process.
ArithRush was built to make that practice easy to return to every day. Focused precision and estimation drills help turn fast numerical decisions into a repeatable habit, while saved results make improvement in speed and accuracy visible over time.
FAQs
What is the difference between precision and estimation?
Precision practice trains exact arithmetic across addition, subtraction, multiplication, and division. Estimation practice trains percentages, rounding, magnitude checks, and useful approximations when an exact answer is not necessary.
How does ArithRush help with interview preparation?
Timed drills help you calculate clearly under pressure. Each result makes hesitation, errors, and weak spots easier to identify before a quant, trading, or consulting interview.
What does Pro help with?
Pro gives you deeper analytics, a fuller practice history, improvement recommendations, and personalized drills so you can focus your time on the skills that need the most work.