Interactive table
Zoom all 118 elements and color the table by category, mass, density, electronegativity, and more.
Open chemistry · No ads · Works offline
Periodic Table
Carry a clear, interactive reference to all 118 elements and 3,383 nuclides—powered by open chemistry data.
Built for the job
A complete chemistry reference, made explorable.
Move from the big picture to the exact property or isotope you need in a few taps.
Rich element cards
Study Bohr shells, physical and atomic properties, isotope counts, and trusted references.
Isotope browser
Explore 3,383 IAEA nuclides with half-life, decay modes, abundance, and binding energy.
Useful tools
Calculate molar mass, balance equations, compare trends, and use offline reference tables.
Open data. No gatekeeping.
No ads, accounts, or paywalls. The chemistry data is open, the app is open source, and the reference stays useful offline.