Planbook Mobile vs WeekdayWiz

Welcome to Planbook! With over one million teachers and one billion lessons, Planbook is the established leader in online lesson planning! Why is Planbook preferred by educators? * We offer the most features for teachers and schools * At $20 per year, we offer the best value on the market * Outstanding support plus knowledge base and tutorials * Our student learning standards are meticulous * Our product is always improving thanks to educator feedback Download and take advantage of our 90 day free trial!

WeekdayWiz turns a party trick into a real skill. Want to know what day of the week your birthday falls on in 2034? Or whether 14 July 1789 was a Tuesday? Most people reach for a calendar app. With WeekdayWiz, you train your brain to do it in your head — in under 3 seconds. The method is a 9-step mental calculation tuned for dates between 1900 and 2099. Sounds intimidating? It isn't. You can master it in about a week of focused practice. — BUILT FOR LEARNING — • A guided Wizard walks you through every step on a real date, with explainers tuned to absolute beginners. • Practice mode reveals each step on tap, so you can hint your way through until the algorithm sticks. • Speedrun modes drill one skill at a time — month codes, mod 7 arithmetic, leap-year corrections — under a timer that pushes you faster. — TRACK YOUR MASTERY — • 12 distinct training modes from "Day of month mod 7" all the way to the Full Algorithm. • Master a mode by hitting 25 correct in a row, under the goal time (typically 3–6 seconds per answer). Progress shows as mastery badges on the home screen. • Personal bests, run history, achievement grid for all 12 modes. — REAL-TIME PACING FEEDBACK — A per-question alarm fires the moment you cross your time budget — so you feel yourself slipping before the answer is even given. — DESIGNED FOR DAILY PRACTICE — • Pull-to-refresh: a fresh random date. • Date picker for testing specific days (your birthday, a historical event, a future plan). • Light and dark themes, system-aware. • iCloud sync keeps your records consistent across iPhones (Pro). — FREE & PRO — The wizard, all step explainers, every method walkthrough, and practice mode stay free forever. Pro unlocks the timed training modes, the mastery system, and iCloud sync — one-time purchase, yours forever. 7-day free trial included. Master the calendar. Without the calendar.