By Merck KGaA (Darmstadt, Germany)

Score: 4
From 2,378 Ratings


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. Features • 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



  • Great! I just can’t see it!

    By NDC.
    Phenomenal set of features and info! However you can’t zoom in and scroll so it’s hard to read. Also needs screen optimization for iPhone X and Max.
  • La mejor !!’ ♥️👌

    By Yocreoendios33
    Ame esta aplicación es tan completa y realmente muy educativo, les daría más estrellas ⭐️ ⭐️⭐️⭐️⭐️⭐️
  • Reference app includes made up element. Why?

    By Dumbnicknamesystem
    The “curiositum” (or however it is spelled) should not be on the periodic table, because it is not part of the periodic table. It has no business being included there for the same reason you wouldn’t put a “curiosity constant” in a physics formula. Put your advertising somewhere else. I chose this app over the many others available because I liked the clean and cool design, which I no longer feel it has. I will change my rating to five stars once the bogus element is removed from the table.
  • Keep it a clean reference UX without fluff, please

    By The Golden Snidget
    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.
  • the best

    By lorentza
    one of the very best science apps. fantastic GUI. beautiful. a level of content for every scientific need. congrats to the developers.
  • Best app forever Poulloh Foutah

    By Poulloh Foutah conakry
    Best app forever Poulloh Foutah Conakry
  • ¡Me gusta mucho!

    By Jaime E. Dueñas M.
    La verdad es que yo solo uso la tabla periódica para hacer crucigramas, pero con esta dan ganas de ser químico. Muy completa y fácil de usar. ¡Y gratis!
  • Fantastic!

    By Krloom
    Please! Update the app for iPhone X!
  • Best Periodic Table App

    By Nedragr1
    Stunning periodic table app that blows the others out of the water. Gives atomic masses, electronegativity, periodic trends, and quick blurbs about each element.
  • Great, but

    By cdcharles
    Update to include all 118 element names! This app still lists Oganesson as Ununoctium, etc. Otherwise this is a great app!