11.1K reviews
Content rating
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About this app

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 in a new design, with more functions and improved features.

The Merck PTE 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 PTE App (with over a million downloads!) we are now able to provide the new, improved and more appealing version of the Merck PTE 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@merckgroup.com
Updated on
Jun 21, 2018

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
No information available

Ratings and reviews

10.4K reviews
A Google user
October 4, 2019
Great app ! Just need to be aware not to use in full extended screen with S8+ : you won't hit the right element. Works perfectly though in normal display, many infos, really good.
34 people found this review helpful
Dudley Filkins
September 22, 2021
Easy and fun to use. Lots of helpful and interesting information about each element. One puzzling thing I found while researching Polonium: atomic weight given as 208.982 but isotopic composition only includes isotopes of 210 and heavier (even though the isotope with the longest Half-Life is Po-209). Just curious how thus adds up?
8 people found this review helpful
A Google user
March 1, 2019
Definitely one of the best PTE apps. Been using it for several years, and it still hasn't let me down.
33 people found this review helpful

What's new

- 350 years celebration update - new content
- Stability and performance update to new operating systems