# WeekdayWiz

> Education

Canonical page: [https://chrome-stats.com/d/id6771076192](https://chrome-stats.com/d/id6771076192)

## Overview

- **ID:** `id6771076192`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Pavol Kolencin
- **Category:** Education
- **Version:** 1.0
- **Last updated:** 2026-05-27
- **First published:** 2026-05-27
- **Size:** 22 MB
- **Data as of:** 2026-09-27
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/weekdaywiz/id6771076192)
- **Website:** [https://www.99electronic.com](https://www.99electronic.com/)
- **Privacy policy:** [https://www.99electronic.com/privacy](https://www.99electronic.com/privacy)

## Description

Train yourself to name the day of the week for any date — instantly, no calendar. Mental math drills, timed speedruns, and a guided wizard for total beginners.

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.

## Rankings

- #1,142,090 — Overall

## Similar extensions and apps

- [WeekdayWidget](https://chrome-stats.com/d/id6745067970) — 5.00 / 5
- [Day of Week Genius](https://chrome-stats.com/d/id1507726330) — 5.00 / 5
- [Doomsday Method | Mental Game](https://chrome-stats.com/d/id6447447000) — 4.70 / 5
- [Day Genius](https://chrome-stats.com/d/id6801888644) — 5.00 / 5
- [Day of Week Pro](https://chrome-stats.com/d/id1662589371) — 4.00 / 5
- [OtterDay: Calendar Logic Game](https://chrome-stats.com/d/id6747994124) — 5.00 / 5
- [Date Trainer](https://chrome-stats.com/d/id1446226198) — 4.00 / 5
- [Doomsday Trainer](https://chrome-stats.com/d/id6760719687) — 4.00 / 5
- [Doomsday Practice](https://chrome-stats.com/d/id6763708034) — 5.00 / 5
- [Brain-Skills](https://chrome-stats.com/d/id6502577701)
- [Learn in 1 Week - WeekWise](https://chrome-stats.com/d/id6755309269)
- [Quick Math Break](https://chrome-stats.com/d/id6752902647)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6771076192)