Carryover: Mental Math

Carryover: Mental Math is a two-minute mental math run you complete once a day. Every morning the app builds a fresh run out of the levels you have already cleared. Three levels of addition on your second day, everything you own six months in. It never asks you questions you have not been taught, and it never stops getting harder as you go. The run is 120 seconds. A wrong answer costs five seconds rather than ending the attempt, so it stays a test of pace instead of nerve. When the clock runs out you see your score against your own previous runs, and nobody else’s. The daily run is never ranked against other players. Between runs there are the levels themselves: addition, subtraction, multiplication, division and mixed, fifteen levels each, three stars a level. Clear a whole category and its Endless mode opens — one life, no timer, as far as you can get. Endless is the competitive half: every category has its own Game Center leaderboard, so that is where you measure yourself against everyone else. The daily run stays private. What is in it • A daily two-minute run, scaled to what you have unlocked • 75 levels across five categories • An Endless mode for every category • Game Center leaderboards for every Endless mode • A streak that counts days, not points • Light and dark, haptic feedback, no sound • No account, no ads, no tracking Two minutes. That is the whole commitment.