Periora vs Kimiya

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.

Kimiya is a real chemistry laboratory in your hand. Put any of the 118 elements and hundreds of compounds into a beaker, flask or test tube. Add water, heat, light or electricity. Then watch: bubbles rise, solutions change colour, precipitates settle, metals burn with their own flame colours, and the balanced equation appears with the energy released or absorbed. EVERY ELEMENT, IN 3D • The full periodic table with animated Bohr models • Atomic mass, electronegativity, density, melting and boiling points, electron configuration, oxidation states, discovery and uses • Flame-test colours for every metal that has one A LAB THAT UNDERSTANDS CHEMISTRY • More than 100 curated textbook reactions with the observations you would actually see • A rule engine for everything else: ionic synthesis, the activity series, solubility rules, neutralisation, combustion, thermal decomposition, electrolysis and dissolution • Exact equation balancing and reaction enthalpy from standard formation data • Temperature and pH readouts, safety notes, and a clear explanation when nothing happens LEARN • A searchable reaction library you can run with one tap • Quizzes on symbols, equations, reaction types, colours and energy • A molar-mass calculator and a bilingual glossary KIMIYA PRO (one-time purchase) • AR: place the bench on your table • Electrolysis cell, spectroscope, round-bottom flask, thermometer and pH meter • 3D ball-and-stick molecule viewer for every product • Stoichiometry: limiting reagent and theoretical yield • Lab notebook to save and replay experiments • Timed expert quiz Fully in English and Arabic with true right-to-left layout. No account needed. The free version shows ads; Kimiya Pro removes them. Kimiya is an educational simulation. Never attempt these experiments outside a supervised laboratory.