Merck KGaA (Darmstadt, Germany)

Designed for iPad

    • 4.7 • 115 Ratings
    • Free



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 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.


Our 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 our 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 apps@emdgroup.com

What’s New

Version 2.2.0

iOS optimization - Stability and performance update to new operating systems

Ratings and Reviews

4.7 out of 5
115 Ratings

115 Ratings

Sniper virus ,

Simple and free

If you hate small petty things out of an app that a child would get upset at like the one star review I found on here, don’t get the app. Most adults would have some kind of understanding as to why there’s an element that’s nonexistent on the app. i guess if i were to complain, for people that don’t know their elements, at least separate curiosity away from the table and/or specify that it is not an element. However, i don’t understand how anyone would get upset at that. Most people downloading this app probably know a bit about their elements such as the person that left a one star review. This is a great app that’s simple and free...

Deyehaus ,

Best periodic table app

The best periodic table app I could find, with more features than you could need. They unfortunately added a nonexistent element for fun, with no option to hide it. A small inconvenience, but whatever.

The Golden Snidget ,

Keep it a clean reference UX without fluff, please

So we finally have the names in place at the end of period 7, which has been much needed ever since they were officially adopted months ago, but then you go and add an eyesore with that curiosity tile. Put it somewhere else in the app if you must. Just get it off of the table itself. It has no place being there. I originally picked this app for being a clean aesthetics reference. I don’t want it to be clogged up with outreach fluff like so many other periodic table apps.

App Privacy

The developer, Merck KGaA (Darmstadt, Germany), has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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