React Table

React Table is built around two things done properly: a real periodic table and real chemistry. The table itself sits in the app in its familiar standard layout, color-coded by element group, and tapping any element opens a detailed card — atomic number, mass, electron configuration, group and period, state at room temperature, electronegativity, common oxidation states, and a short profile — presented cleanly rather than crammed in. It's a reference you'd actually want to browse, not a decorative grid.

The core of the app is an equation workbench where you assemble reactants and products from real compounds and the app balances the equation with correct stoichiometry — computing coefficients so atoms are conserved on both sides, the way it actually works, not a lookup of pre-written answers. From there it can break down what type of reaction it is (synthesis, decomposition, combustion, single/double replacement), show the mole ratios, and walk through the balancing logically so you can see why the coefficients land where they do. A library of known reactions lets you explore verified examples, and a challenge mode hands you an unbalanced equation to balance yourself, checking your answer against the computed solution.

The app is a full multi-screen tool — an interactive periodic table, element detail cards, an equation builder and balancer, a reaction library, and a challenge set that tracks your progress — all stored locally on the device. No account, no ads, no connection needed; every element fact and every calculation lives on your phone. It's deliberately built as a real chemistry application with a proper data layer, not a shallow "combine two things" toy.