Pi 100 Challenge vs SAPPER

Some people climb mountains, while others run marathons. You are challenging yourself to calculate Pi by hand. This app guides you through all the steps needed to compute Pi to 100 decimal places. Surprisingly enough, this doesn't require any complex math -- just basic addition, subtraction, multiplication and long division. Each page presents one problem to solve. Complete the problem, and move on to the next step. Take the Pi-100 Challenge, sharpen your mind, and calculate Pi. GameCenter integration allows you to track progress and achievements. Leaderboards allow you to race against your friends to see who can finish more digits, or solve for the digits faster.

The same board for everyone, every day. One attempt. How far you push it is up to you. SAPPER is minesweeper with no edges. Each day the world gets one shared minefield, identical for every player. Start on safe ground and sweep outward. The farther you go, the denser the mines and the more every safe tile is worth. A Cash Out button sits on screen the whole time. Bank your score, or push one more row into the unknown. Hit a mine and the run ends with half of what you had not banked. Cash out and all of it is yours. That choice is the whole game. Then see how your run stacks up and share the shape of the territory you cleared. Miss a day and it is gone. Tomorrow there is a new board, the same for everyone, again. MORE WAYS TO PLAY Endless: a fresh board every run, whenever you want. Chase your personal best. Rush: two minutes on the clock. Clearing tiles buys time, mines cost it, and there is no Cash Out. How long you last is the score. The Daily is free for everyone, forever. One single purchase unlocks the full game, Endless and Rush included, for good. Your first day comes fully unlocked, so you know exactly what you are buying. No subscriptions. EVERY CASH-OUT LEAVES A MARK Cash out on purpose and the expedition is preserved in the Archive: the shape of the territory you cleared, the score, how far you pushed. Every banked point grows your lifetime Vault, and Vault milestones unlock app icons and board editions. Everything is earned by playing. Nothing is sold, and nothing changes the odds. iCloud keeps your Archive, Vault, and stats in sync across your devices. BUILT TO FEEL CALM No timers while you play. No explosions. No ads. Just a clean board, quiet haptics, and a real decision on every tile. FEATURES Daily seeded challenge, one board shared by the whole world Shareable result cards showing the territory you cleared Infinite drag-to-pan board Scoring that rewards going deeper Expedition Archive that preserves every cash-out Lifetime Vault with earned app icons and board editions Board editions found out on the board, not bought iCloud sync across your devices Game Center leaderboards Dark Mode and Dynamic Type support Plays fully offline Sweep. Push your luck. Cash out before the board catches you.