(Open Source) Periodic Table
Chemistry, elements, isotopes
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Free and open source. All 118 elements, 3,383 isotopes, a quiz, calculators and 3D models. No ads, no paywalls.
A clean, free periodic table for chemistry students, teachers, and curious people.
Explore all 118 elements in an interactive table, then tap into detailed element cards with atomic, physical, discovery, and isotope data. Switch color modes to see trends across the table, search by name or symbol, compare properties, and use practical tools when homework or curiosity sends you down a chemistry rabbit hole.
FEATURES
Interactive Periodic Table
Pinch, pan, zoom, and tap through the full periodic table with category colors and property heatmaps.
Element Quiz
Learn symbols, names, atomic numbers, and element families with quick 10-question rounds. Start with the first 20 elements and work up to all 118.
Element Details
See atomic mass, density, melting point, boiling point, electronegativity, radius, electron shells, discovery facts, isotopes, and more.
Safety Data
GHS hazard pictograms, signal words, and hazard statements for 77 elements, free. No PRO lock.
Search and Lists
Find elements quickly by name, symbol, or atomic number.
Isotopes Browser
Browse thousands of nuclides with half-life, decay, abundance, and nuclear data.
Molar Mass Calculator
Parse formulas with nested groups and hydrates, then see the element-by-element mass breakdown.
Chemistry Tools
Balance equations, review common reactions, inspect trends, and use reference tables for ions, solubility, constants, and organic series.
Mini Academy and Dictionary
Learn core chemistry ideas with compact lessons, glossary entries, and quick checks.
No ads. No paywalls. No account required.
100% Open Source
The complete source code is public - see it, audit it, or contribute at https://github.com/Open-Apps-Studio/periodic-table
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New
- Element Quiz: symbols, names, atomic numbers and element families in quick 10-question rounds
- Safety: hazard pictograms, signal words and hazard statements for 77 elements
- Every element shows its protons, neutrons and electrons
- Emission spectra right on the element page
Fixes
- Half-lives now come from IAEA isotope data (uranium showed 142 years instead of 4.5 billion)
- CAS numbers, isotope search ("Carbon-14"), trend filters and the compare picker all fixed
- Better dark mode contrast and VoiceOver support
The developer, AHMET EMRE DEDELER, 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
- AHMET EMRE DEDELER
- Size
- 49.5 MB
- Category
- Education
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Ahmet Dedeler