Zperiod
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Zperiod app icon For iPhone

Chemistry,
in your pocket.

All 118 elements, real 3D models and the tools you reach for every chemistry lesson. Designed from the ground up for iPhone.

Coming soon to theApp Store Try it on the web

Free · Requires iOS 18.6 or later

Sodium detail page with its place in the periodic table and electron shells
The Zperiod periodic table on iPhone
Indicators tool with a 3D beaker of universal indicator at pH 7
118elements
16orbital shapes in 3D
40languages
0ads or trackers
01 — TABLE

Every element, a tap away.

Browse a periodic table built for a small screen, or a clean list with the numbers you need, coloured the way your textbook teaches it.

  • Colour by category, phase or block
  • Search by name or symbol
02 — ELEMENTS

Every element, in depth.

Open any element for its position, properties, isotopes and electron structure. Step to the next element without leaving the page.

  • Shell and orbital diagrams
  • Compare with neighbouring elements
  • Share a clean element poster
03 — TOOLS

A small lab that fits in your hand.

Tilt a real 3D beaker, drop in titrant and watch the indicator change colour. Then check your homework with tools that show their work.

  • Molar mass with mass composition
  • Reaction predictor with balanced equations
  • Solubility rules and pH indicators
04 — ORBITALS

See the shape of an orbital.

Every s, p, d and f orbital as a 3D model you can turn with a finger, so the pictures in your notes finally make sense.

  • 16 orbital shapes, from s to f
  • Magnetic quantum numbers labelled

Free. No ads.Nothing collected.

No accounts, no analytics, no tracking. Your settings and recent formulas stay on your device.

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