Quickly calculate the day of the week for any given date in your head. Impress friends and colleagues with this mental math skill for events like birthdays or contract signings.




245+ iOS apps & games curated and reviewed
Whether you're new to this day of the month or looking for an upgrade, our curated collection of 245+ iOS apps and games has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | ||
| 2 | Free | 3.5★ (4) | No | No | Oct 2026 | ||
| 3 | Free | 5.0★ (1) | No | No | May 2026 | ||
| 4 | Free | 1.0★ (2) | No | No | Oct 2026 | ||
| 5 | Free | 4.7★ (2.3K) | No | No | Oct 2026 | ||
| 6 | $0.99 | 2.0★ (2) | No | No | Jul 2026 | ||
| 7 | Free | 4.7★ (119) | Yes | Yes | Oct 2026 | ||
| 8 | Free | — | No | No | May 2026 |










Quickly calculate the day of the week for any given date in your head. Impress friends and colleagues with this mental math skill for events like birthdays or contract signings.

This game challenges you to determine the day of the week using a mathematical formula. It's a simple yet engaging puzzle for those who enjoy logic and calculation.