Meanings - Essential Words

As a developer who struggled with vocabulary retention while learning English professionally, I became frustrated with existing apps that felt like digital flashcards. I'd spend 30 minutes daily on popular apps, only to forget words during important meetings. I realized the issue wasn't repetition - it was passive consumption. When I started spelling words out loud while hearing them, my retention skyrocketed. This led to the core idea: what if vocabulary learning required active letter reconstruction instead of passive recognition