Mendeleev.me vs Periora

Mendeleev.me is a multiple-awarded and certified app that provides the following: 01. A virtual laboratory with cool chemistry experiments 02. Concise information for all chemical elements 03. Multi-language support 04. In memoriam Chernobyl 05. Hidden app secrets (easter eggs) 06. Studying analytics 07. Quick search & in-place information filtering 08. Downloadable PDFs for each chemical element 09. Presentation galleries & movie-clips 10. Atom structure simulations 11. Cohesive design focused on functionality 12. Controls for haptic feedback, sounds & visual effects The app complies with IUPAC's (International Union of Pure and Applied Chemistry) latest standardization and is used in more than 148 countries worldwide. Love the app? Rate us! We update the app regularly so we can make it better for you. If you have feedback & questions please visit our website: https://app.mendeleev.me Mendeleev.me - The chemistry lab in your pocket.

Periora is the periodic table you'll actually enjoy opening. Every one of the 118 elements, with data compiled from IUPAC and NIST — atomic weights, electron configurations, physical properties — bundled offline, so it works in class, in the lab, or on a plane. No account. No ads. Ever. BUILT FOR STUDY • Quiz mode: Symbol → Name and Name → Symbol with instant feedback • Search that understands Arabic and English — حديد, Iron, Fe, or 26 all find the same element • Category filters: pick out the halogens or lanthanides at a glance BEAUTIFUL AND ALIVE • Animated electron shells for every element • A true iPad layout: the whole table at a glance • Full dark mode and a design that respects your language — complete right-to-left Arabic ACCURATE BY DESIGN • Values from IUPAC (2021 standard atomic weights) and NIST • Every property traceable to its source PERIORA PRO (optional one-time purchase) • Unlimited quiz sessions — the reference itself is free, forever • No subscription, ever Made for students, teachers, and the chemistry-curious.