Rotate Your Device

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Desktop Experience Only

Please access Zperiod on a desktop browser.

Zperiod iPhone app

Interactive periodic table

Chemistry
you can see.

A free chemistry workspace for students and teachers: the periodic table, 3D atoms, ions and hands-on tools, in 40 languages.

On the web

The full workspace, on a bigger screen.

Interactive periodic table with colour-coded element categories — **Periodic Table**All 118 elements, colour-coded, with phase data and instant details.

Cobalt detail with a 3D atom model and common ions — **3D Atom Models**Electron shells, orbitals and swipeable fact cards for every element.

Equation balancer tool — **Chemistry Tools**Balancing, molar mass, solubility and a virtual lab.

Worksheet generator with balanced equation exercises — **Worksheet Studio**Print-ready equation worksheets with answer keys and PDF export.

Zperiod for iPhone

Every element, real 3D models and chemistry tools, designed for your phone.

Coming soon to the App Store

118Elements

50+Ions

40Languages

FreeNo sign-up

Open it on your computer

The interactive workspace is built for a keyboard and a large screen. Send yourself the link and pick up there.

Introducing

Zperiod

Master Chemistry.
Visually & Instantly.

The interactive periodic table designed for Grade 9-12 students. Stop memorizing — start visualizing.

Interactive Atoms Ion Engine Exam Ready

Philip Zhao

Creator & Full Stack Developer

Aurora High School · Grade 11 (2027)

Toronto, Canada

What's New

v3.0.0

Version 3.0.0.
Build Your Chemistry Lab.

A major learning and visualization release: shape the table around your workflow, explore orbitals in 3D, and turn practice into lasting progress.

Custom Layouts SPDF Atlas Learning & Review

NEW

SPDF Orbital Atlas

Explore all 16 atomic orbital shapes with interactive 3D probability-density models.

TOOL

Custom Layouts & Better Tools

Personalize periodic-table cards, then work through faster, clearer chemistry-tool workflows.

LEARN

Learning Path & Spaced Review

A redesigned Learning Playground turns lessons, practice, and returning review into a connected study loop.

Chemistry Tools

Grade 9-12 Chemistry Calculators

Equation Balancer

Balance complex chemical equations automatically with visual stoichiometry feedback.

Molar Mass

Instantly compute molecular weights with a detailed element-by-element mass breakdown.

Solubility Table

Quickly reference interactive charts and rules for ionic compound solubilities.

Virtual Lab

Tilt a beaker and watch pseudo-liquid particles move and spill naturally.

SPDF Orbital Atlas

Explore all 16 atomic orbital shapes — s, p, d, and f — with interactive 3D probability-density models.

Worksheet Generator

Create useful worksheets for your class

Exercise Type

Number of Questions

Reaction Types

Synthesis A + B → AB

Decomposition AB → A + B

Single Replacement A + BC → AC + B

Double Replacement AB + CD → AD + CB

Combustion Hydrocarbon + O₂

Difficulty

Questions are generated from real, commonly taught reactions.

Click 'Generate Worksheet' to create practice problems

Zperiod Partnerships

Build science learning
together.

Zperiod now connects the web and app. We welcome education organizations, science brands, creators, and technology partners to build better learning experiences together.

Scroll

2M+

Monthly Views

400K+

Active Users

40+

Languages

100+

Countries

Why Partner

Built for science education.
Designed for impact.

Global Reach

Over 1.89 million monthly page views from students and educators across 100+ countries in 40+ languages.

Trusted Environment

An education-first experience across the Zperiod website and app, where thoughtful partnerships can become a natural part of learning.

Flexible Collaboration

Explore app integrations, educational content, community programs, and creative campaigns shaped around shared goals.

Partnership

Let's build something meaningful
for science learners.

Your information is sent securely and will only be used to follow up on your inquiry.

Buy Me a Coffee Support development

Electron Animation

Default View

Playback

Speed 0.6×

Mass display

Global Units

Temperature

Density

Energy

Send a Suggestion

Help us improve Zperiod — pick a topic or write your own.

A Personal Update on Source Code

To all the amazing people who have supported my journey: Thank you so much. Your continuous encouragement and enthusiasm for Zperiod mean the world to me.

Unfortunately, I have recently discovered several blatant clones reproducing my design, content, and UI for commercial gain. To protect the integrity of my hard work, I have made the difficult decision to temporarily transition my GitHub repository to private.

Please rest assured, once this project reaches its full maturity, I plan to reintroduce open-source components for the community to learn from!

The original public repository remains available for reference, but it will be temporarily paused and no longer updated.

Zperiod Old

Known Unauthorized Copies

Please help report these fakes

Evidence: App Store Clone

App Store Clone

Unauthorized iOS app replicating UI

Evidence: LinkedIn Post

LinkedIn Post

Plagiarized showcase post

Rotate Your Device

Desktop Experience Only

Chemistryyou can see.

The full workspace, on a bigger screen.

Zperiod for iPhone

Open it on your computer

Zperiod

Master Chemistry.Visually & Instantly.

Philip Zhao

v3.0.0

Version 3.0.0.Build Your Chemistry Lab.

Zperiod - Complete Interactive Periodic Table with 118 Elements, 3D Atom Models, Ions, and Chemistry Tools

Chemistry Tools

Equation Balancer

Molar Mass

Solubility Table

Virtual Lab

SPDF Orbital Atlas

Worksheet Generator

Build science learningtogether.

Built for science education.Designed for impact.

Global Reach

Trusted Environment

Flexible Collaboration

Let's build something meaningfulfor science learners.

Global Units

Send a Suggestion

How to use this tool

Properties & Structure

Reaction Prediction

Common Uses & Hazards