Zperiod: Learn Chemistry
Periodic Table, Tools & Games
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Free to start. Try Pro free for 7 days: 3D orbitals, a pH lab, organic chemistry and Play. Yearly plan or pay once. No ads, no accounts, no tracking.
See the periodic table the way it really looks. Zperiod brings all 118 elements to life with real photos, 3D orbitals you can turn and zoom, a tiltable 3D beaker for pH experiments, organic molecules and chemistry games, in 40 languages. Made for students, teachers and anyone curious about chemistry. Trusted by 1.4 million learners on zperiod.app.
FREE, ALWAYS
• Interactive periodic table, colored by category, phase or block
• Search any element by name, symbol or number
• Element pages: electron shells and orbitals, physical properties, uses and safety
• Molar Mass calculator with mass composition
• Solubility rules
ZPERIOD PRO
Try it free for 7 days, then choose a yearly plan or pay once for lifetime access.
• 3D orbitals: turn and zoom all 16 orbital shapes (s, p, d and f)
• pH lab: drop in titrant and watch the indicator change color in a 3D beaker
• Reaction Predictor: type the reactants and read the balanced equation
• Organic Chemistry: molecules in 2D, skeletal and 3D, plus naming practice
• Play: balance equations, identify reaction types, build the periodic table, sort acids and bases, match element symbols
• Real photos: hundreds of pictures across all 118 elements, each with its story
• Emission spectra and full element data: isotopes, bonding and reactivity, advanced data and neighbor comparison
• Arrange each element page the way you study
The yearly plan renews automatically unless you cancel at least 24 hours before the end of the period. Manage or cancel it any time in your Apple ID settings. The one-time lifetime purchase works with Family Sharing. Prices vary by region.
PRIVATE BY DESIGN
No ads. No accounts. No tracking. Your studying, settings and recent formulas stay on your device.
Zperiod is made by one student. The website, zperiod.app, stays free for everyone.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://zperiod.app/privacy
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The developer, 世谦 赵, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 世谦 赵
- Size
- 103.6 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 39 more
- English, Arabic, Bengali, Bulgarian, Croatian, Czech, Danish, Dutch, Filipino, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Lithuanian, Malay, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Spanish, Swedish, Tamil, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Zperiod Pro Yearly $1.99
- Large Tip $9.99
- Medium Tip $4.99
- Small Tip $1.99
- Zperiod Pro $4.99
- Copyright
- © 2026 Zperiod
