• Links to our other apps are now available in the About screen — tap the Settings icon to find them.

Colour the table by any property. Tap the thermometer icon to switch to Heat Map mode — the table recolours by electronegativity, density, melting point, atomic radius, and more. A blue-to-red gradient shows which elements rank highest at a glance. Crustal abundance. Every element detail page now shows how common it is in Earth's crust — plus new quiz questions to test your knowledge. Flexible quiz timing. Choose your quiz duration in Settings — 1, 2, 3, 4, or 5 minutes, or play with no timer at all. High scores are tracked separately for each duration.

v1.3 New: Property Heat Map — tap the thermometer icon in the toolbar to recolour the entire periodic table by electronegativity, atomic radius, density, melting point, boiling point, thermal conductivity, ionization energy, atomic mass or electron affinity. A blue-to-red gradient makes trends across periods immediately visible. Elements with no data for a property appear grey. Tap the thermometer again to return to category colours. Also in this release: improved Bohr model electron visibility and electron shell scaling.

Version 1.2 Each element's detail page now has collapsible sections, making it easier to focus on the information you need New data for every element: history, crystal structure, magnetic ordering, thermal conductivity and electrical resistivity Expanded quiz with 9 new question types covering groups, magnetic ordering, crystal structure, electronegativity, density, thermal conductivity, boiling point, discovery year and discoverer Quiz timer improvement: the current question always completes before results are shown Bug fixes and improvements

Search Find any element instantly by name, symbol, or atomic number. Matching elements highlight on the table as you type. Pinch to Zoom Pinch the periodic table to zoom in or out. Double-tap to reset. The table also auto-scales to fill the screen in landscape orientation. Richer Element Data Element profiles now include oxidation states, atomic radius, natural occurrence (primordial, from decay, or synthetic), and biological role. More Quiz Questions The quiz now draws on the new data — expect questions on oxidation states, biological roles, natural occurrence, and atomic radius alongside all the existing categories. Category Labels A new option in Settings adds a two-letter category code to each element cell, making it easier to identify groups without relying on colour alone. Accessibility Improved VoiceOver support throughout the app, Reduce Motion respected on all animations, and better layout on smaller screens.