For iOS · iPhone & iPad

The invisible world, lit from within.

A darkroom for chemistry — 118 elements, 352 molecules, 29 lab instruments, all on-device.

Download on the App Store See what's inside
  • 118 Elements
  • 352 Molecules
  • 29 Lab
  • 100% on-device
Chemistry Explorer is drawn dark by design — a darkroom for the invisible world.

the deep dive

Five universes · one app

Not a reference book. A studio.

Every screen is built to be touched — atoms you can rotate, beakers that fill, spectra you can scrub. Chemistry, made luminous.

the daily ritual

Today

One molecule and one element, alive on arrival. A rotating specimen every day.

Today
the whole periodic table

Elements

118 elements with a live trend lens. Pinch-zoom from icon grid to data card; eight recolor lenses from electronegativity to density.

Elements
a specimen gallery

Molecules

352 molecules as liquid-glass specimen plates. 2D explorable structures, view-in-3D, AR Quick Look, and a Chemical Space star map.

Molecules
a lab in your pocket

Lab

29 living calculators arranged as instruments — beakers that fill, particle boxes that respond, a pH spectrum you can scrub.

Lab
one field, everything

Search

Elements, molecules, formulas, and tools in one iOS-native search. Type a formula, get an instant molar mass.

Search
the deep dive

Elements

Bohr model, quantum probability cloud, emission spectrum, isotope makeup, ionization ladder — and a shareable poster for every element.

Elements

The Lab · 29

Living calculators,
not a form dump.

Tools arranged as instruments. An ideal-gas particle box that responds to temperature. An animated dilution beaker. A pH spectrum you scrub with your thumb.

Balance
Balance → conservation receipt. The strongest tool in the bench.

Reactions

6
  • Balance
  • Reaction Library
  • Reaction Predictor
  • Molar Mass
  • Stoichiometry
  • Moles

Solutions

7
  • Titration
  • Molarity
  • Dilution
  • Dilution (mass)
  • Mass Conc.
  • Percent Conc.
  • Solubility

Acids & Bases

3
  • pH
  • pOH
  • Buffer

Equilibrium & Kinetics

3
  • Equilibrium
  • Reaction Rate
  • Activation Energy

Gases & Matter

2
  • Ideal Gas
  • Density

Reference

8
  • Chemistry Glossary
  • Bond Type
  • Compare Elements
  • Polyatomic Ions
  • Solubility Rules
  • Activity Series
  • Constants
  • SI Units & Prefixes

ChemKeys

Type chemistry
anywhere.

A system-wide keyboard that types proper formulas in any app — Messages, Notes, Mail. Subscripts, superscripts, charges, and reaction arrows, rendered correctly.

  • Proper subscripts & superscripts — H₂O, SO₄²⁻, Fe³⁺
  • Reaction arrows — 2H₂ + O₂ → 2H₂O
  • Fully offline. No full access required.
ChemKeys
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

ChemKeys never requests full access: no network, no logging, nothing leaves the keyboard.

Built private, by design

Drawn dark for a reason.
Private for a reason.

Your chemistry stays on-device

Formulas, searches, SMILES, molecules, notes and keyboard input stay on your device. Optional usage and crash reporting helps improve the app; turn it on or off in Settings. No advertising ID is collected.

Chemistry calculations stay on your device. Usage and crash reporting are optional.

Standing on shoulders

Every value is traceable to its source. Chemistry Explorer is a specimen cabinet — the specimens come from the open scientific record.

  • RDKit Open-source cheminformatics — SMILES, 2D coords, ring perception
  • NIST Atomic spectra & isotope data
  • IUPAC Standard atomic weights & nomenclature
  • Bowserinator Periodic-Table-JSON seed dataset