earth Lexica is an open-source lexicon application for Android. It operates fully offline and includes etymological information. The application is designed for users who work with language regularly, including scholars, students, writers, and readers who require precise definitions and historical context.

The lexicon is intended to restore meaning to words without relying on networked services. All language data is downloaded to the device and processed locally. Once installed, the application functions independently of internet connectivity.

earth Lexica uses datasets derived from Wiktionary. The data is made available for offline use and stored directly on the device. Search queries and results are processed locally, without sending requests to external servers.

The interface is designed to be functional and restrained. A search bar is accessible at all times. Results are displayed in a structured format that prioritizes readability. A dark mode is included to reduce battery usage and improve legibility in low-light environments.

Because the application works offline, performance depends on local storage and processing. Search results may take several seconds to load, particularly for larger language datasets. Users are advised to ensure sufficient internal storage.

Etymological information is included where available. This allows users to examine the historical development of words, including origins and shifts in meaning. The application supports careful word choice by providing definitions with contextual background rather than simplified summaries.

earth Lexica does not collect user data. No tracking, analytics, or user profiling are implemented. As open-source software, the project allows its code to be inspected and verified. This transparency ensures that data remains on the user’s device and is not accessed by third parties.

The application is currently available on Android via the Play Store. An iOS version is in development.