250+ iOS apps curated and reviewed
Every iPhone needs a few good doomsday method apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (3) | No | Yes | Oct 2026 | |
| 2 |  | Free | 5.0★ (1) | No | No | May 2026 | |
| 3 |  | Free | — | No | Yes | Sep 2026 | |
| 4 |  | Free | — | No | No | Aug 2026 | |
| 5 |  | Free | 4.7★ (2.2K) | No | No | Oct 2026 | |
| 6 |  | Free | 4.7★ (3.1K) | Yes | No | Oct 2026 | |
| 7 |  | Free | — | No | Yes | Jul 2026 | |
| 8 |  | Free | — | Yes | No | Aug 2026 |
Master the art of calculating weekdays for any date with this comprehensive educational app. Learn a proven technique, practice with interactive exercises, and track your progress to sharpen your mental arithmetic skills.
Practice and memorize a method for quickly calculating the weekday of any given date. This app is based on John Conway's 1970 mathematical system, allowing you to test your abilities without external tools.
