The periodic table in digital form, interactive and at a glance – entirely free of charge.
Immediately find any imaginable information about an element, calculate molar masses of any compounds you like, facilitate your overview with infographics, compare atomic radii, masses, electronegativities, and much more!
After over a million downloads, now with extended functions, improved features and the visual image of our new Merck design (inspired by the colorful and multifaceted shapes seen under a microscope, the logo and colors now follow the concept of a vibrant science and technology company) – lively and dynamic.
Based on the idea of a lively science and technology company and inspired by the colorful and multifaceted shapes seen under a microscope, the new corporate design shows itself in expressive colors and shapes of a natural scientific impression. These are also represented in our new company logo.
The Merck PSE App is the ultimate tool for every friend of chemistry - whether pupil or teacher, student or professor, amateur or expert, hobbyist or technician. Our app is a must-have of digital periodic tables. Get informed with our mobile reference work, any time, with ease, offline and in detail.
Thanks to the many hours of work, experiences, reviews and user feedbacks on our first PSE App (with over a million downloads!) we are now able to provide the new, improved and more appealing version of the Merck PSE App.
Even more features. Even more improvements. Even more user friendliness.
Download now free of charge and start experimenting.
• All important information about the elements
Atomic number, valence electrons, oxidation state, electronegativity according to Allred-Rochow and Pauling, atomic mass, boiling point, melting point, atomic radius, density, history, discoverer, classification, crystalline structure type, electron configuration, basic state, ionization energy, isotopic composition, state of matter, hardness according to Mohs, oxidation numbers, percentage of mass in Earth's crust, year of discovery, half-life, and much more
• Visualized element properties
Atomic radius, atomic radius graphic, electronegativity (according to Allred-Rochow and Pauling), ionization energy, relative atomic mass, state of matter, ranking list of properties, discovery, classifications
• Molar mass calculator
Simple entry field for chemical formulas. Calculate molar mass simply and quickly
• Offline use
No Internet needed. All contents in the app.
• Economical handling of access rights
• Variety of languages
German, English, French, Spanish
• Interactive operating system
Smart operating elements and numerous selection options
Questions? Feedback? Suggestions? – You can reach us at firstname.lastname@example.org
iOS optimization - Stability and performance update to new operating systems.
Ratings and ReviewsSee All
Valuable Free Source of Info on Elements
Great database of key info on elements.
Well designed user interface.
Must-have for anyone with professional interest in materials engineering.
Note: entry on rare earth element Erbium needs updating to reflect its vital contribution to the infrastructure of the Internet through its widespread use in optical fibre amplifiers.
All relevant and necessary information for A-level and undergraduate study. The extra features like the calculator are incredible useful. Well worth downloading.
Best of type
Well presented, had it for ages and has a very good developer who responds to feedback and keeps it up to date.
No Details Provided
The developer will be required to provide privacy details when they submit their next app update.
- Merck KGaA (Darmstadt, Germany)
- 10.5 MB
- Requires iOS 9.0 or later.
- Requires iPadOS 9.0 or later.
- iPod touch
- Requires iOS 9.0 or later.
- Requires macOS 11 or later and a Mac with the Apple M1 chip.
English, French, German, Spanish
- Age Rating
- © Merck KGaA, Darmstadt, Germany
Up to six family members will be able to use this app with Family Sharing enabled.