Master the 'Human Calendar' trick to mentally calculate the day of the week for any date. This app offers tutorials, guided practice, and training games to help you learn and perfect this skill.






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Looking for free weekdaywidget apps? 20 of our 207+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (10) | No | No | Jun 2026 | ||
| 2 | Free | 4.6★ (771K) | Yes | Yes | Sep 2026 | ||
| 3 | Free | 4.7★ (2.6K) | Yes | Yes | Sep 2026 | ||
| 4 | Free | 4.5★ (8.6K) | No | Yes | Sep 2026 | ||
| 5 | Free | 4.7★ (9.7K) | Yes | No | Sep 2026 | ||
| 6 | Free | 4.7★ (862) | Yes | No | Sep 2026 | ||
| 7 | Free | 4.4★ (78) | No | No | May 2026 | ||
| 8 | Free | 4.7★ (2.2K) | No | No | Sep 2026 |






Master the 'Human Calendar' trick to mentally calculate the day of the week for any date. This app offers tutorials, guided practice, and training games to help you learn and perfect this skill.





Personalize your device with highly customizable widgets for your home and lock screens. Showcase photos, track events, display weather, and launch apps directly from your widgets. Includes a wallpaper library and tools for theming.






Easily calculate the duration between two dates, with or without accounting for the time of day. You can also add or subtract various time units from a specific date. The results are automatically converted into multiple units for your convenience.