# Apex Source: [https://thefellow.github.io/apex/](https://thefellow.github.io/apex/) ## Pyramid summary - **~2 words:** Retro converter - **~8 words:** A working Windows 3.1-style homage to the original Apex. - **Expanded:** A working recreation of the Windows 3.1 unit converter my dad built and released as shareware in the 1990s. ## Full content My dad built Apex in the 1990s and released it as Windows 3.1 shareware. It put everyday conversions into one compact window, with vivid and lifelike 256-color icons. Way ahead of its time! Choose a category, select two units, and type into either field. Apex immediately recomputes the other value. ## About the recreation The calculations are data-driven TypeScript, and each category has recreated indexed 256-color pixel art. The lightning bolt still belongs in that blue title bar.