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Studying chemistry means constantly looking up element symbols, atomic masses, and electron configurations - and most reference tools bury that data behind ads, logins, or a network connection. Elementum Periodic Registry is a fully offline periodic table and self-testing app that keeps every element fact and practice question right on your device. It's built for students cramming for exams, educators preparing demonstrations, and hobbyists who just enjoy exploring the elements.

Styled as a lab-grade terminal readout, the app pairs a clean Jetpack Compose interface with a distinctive "registry" aesthetic. You move between a browsable element table, a knowledge-evaluation quiz, and a settings console, with theme options that range from warm parchment to pure black AMOLED. Nothing you do leaves the device.

KEY FEATURES
• Lab-Grade Periodic Table - Browse elements like Hydrogen, Helium, Carbon, Oxygen, Sodium, and Copper with detailed properties for study and quick reference.
• Rich Element Data - Each entry surfaces atomic mass, melting point, boiling point, electronegativity, oxidation states, discovery year, electron configuration, and grid coordinates.
• Case-Insensitive Search - Find any element fast by name or symbol without worrying about exact capitalization.
• Find by Property - Query the table by its underlying properties to locate elements that match the values you care about.
• Knowledge Evaluation Quiz - Test yourself with question types like Name from Symbol, Symbol from Name, and Configuration from Symbol.
• Adjustable Difficulty - Choose Medium and higher tiers that add electron configuration matching and advanced property-based query questions.
• Retake and Reset - Restart a quiz to reinforce weak spots, or reset the system to clear your progress and start fresh.
• Multiple Themes - Switch between Light Readout, Dark Terminal, and AMOLED-first pure black for comfortable viewing in any setting.
• High-Contrast Terminal Colors - A crisp, readable display that keeps element data legible at a glance.
• System Sync - Optionally follow your device's system preferences so the app's look matches the rest of your phone.
• Onboarding Guidance - Tutorial overlays and quick guide tips help you learn the interface the first time through.

PERFECT FOR
• Students - Academic reference and chemistry exam prep, from memorizing symbols to drilling electron configurations.
• Educators - Teaching demonstrations and resource curation with reliable, always-available element data.
• Enthusiasts - Casual offline exploration and hobbyist learning at your own pace, anywhere.
• Anyone who wants a fast, distraction-free periodic table that works without a signal.

HOW IT WORKS

Open the app and follow the short onboarding to learn the layout.

Browse or search the periodic table to read full property breakdowns for each element.

Launch the quiz, pick your difficulty, and answer questions like naming the element for the symbol 'Xe'.

Retake quizzes to sharpen recall and adjust themes in settings to suit your environment.

PRIVACY
Elementum Periodic Registry runs entirely on your device. It makes no network calls and bundles no advertising or analytics libraries, so your study data stays with you. The sci-fi "telemetry" and "sync" labels are purely cosmetic readouts - nothing is collected or transmitted.

Whether you're preparing for an exam, planning a lesson, or simply curious about the building blocks of matter, Elementum Periodic Registry puts a complete chemistry reference and quiz engine in your pocket. Install it today and start exploring the elements offline.

Recent changes:
New version!