Codex

About

Codex is a fast day-of-week calculator and card-stack reference tool designed for practice, rehearsal, and quick lookup. It provides accurate results with flexible output options so you can use it in different environments.

Day of Week Calculator
- Enter or speak a date and Codex displays the correct weekday.
- Optional haptic feedback and optional sounds can be enabled for hands-free or silent operation.

Customisation
- Configure haptic strength, timing, and patterns.
- Choose optional tones and volume.

Card & Stack Tools
- Quick reference and practice utilities for common stacks and arrangements (e.g., Mnemonica, Aronson, Si Stebbins, Eight Kings, and more).
- High-contrast, readable interface for rapid lookup.

Codex is built to be quick, reliable, and easy to use—whether you’re practicing at home or reviewing information on the go.

Details