Spark vs Elemlearn

Spark is the daily reading app for people who love ideas but don't have time for a 300-page book. Every Spark is a 3-5 minute reading on a single book or concept, broken into card-style slides with optional audio narration. Personalized to your interests through a quick quiz, curated daily , and designed to actually fit into your day. WHAT YOU'LL FIND • Personalized daily Sparks based on your interests • Card-by-card reading with smooth audio narration • Save the ones that hit, share the ones that surprise you • Daily puzzle games — Sudoku and Parallels — to keep your brain sharp • Friend leaderboards for streaks and puzzle wins • Streak tracking and weekly reading goals HOW IT WORKS Take a quick interest quiz when you sign up. Spark uses your answers to generate readings tailored to you — philosophy, business, science, history, psychology, and more. Search for any topic and get a Spark on demand. Rate what you read so the recommendations get better over time. SOCIAL, BUT QUIET Add friends, see their streaks, send a nudge when they fall behind. Friendly competition without the noise. No public feeds, no algorithmic timeline, no doom scroll. DAILY GAMES Beyond reading, Spark includes daily Sudoku and Parallels (a Connections-style word grouping game). One puzzle a day, everyone plays the same one, friends compete on a daily leaderboard.

Become unbeatable on the entire periodic table! Elemlearn is the perfect app to learn and review all 118 chemical elements - their names, their symbols, and the families they belong to - in a fun, ad-free way. Two game modes Quiz yourself either way: Element → Symbol or Symbol → Element. Switch anytime to challenge your memory from both angles. Smart review The app automatically spots the elements you know least and brings them back more often, with tricky look-alike options (like Silicon vs Selenium, or Sodium vs Sulfur) to sharpen your memory and avoid confusion. Bohr diagrams Every answer reveals the element's electron shells, atomic number, atomic mass and family - so you learn the real chemistry, not just the letters. Track your progress Detailed stats, a daily streak, and mastery family by family, so you always know exactly where you stand. Six languages Interface in English, French, Spanish, Portuguese, Italian and German. All 10 element families, all 118 elements Alkali metals: Lithium, Sodium, Potassium, Rubidium, Caesium, Francium Alkaline earth metals: Beryllium, Magnesium, Calcium, Strontium, Barium, Radium Transition metals: Scandium, Titanium, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel, Copper, Zinc, Yttrium, Zirconium, Niobium, Molybdenum, Technetium, Ruthenium, Rhodium, Palladium, Silver, Cadmium, Hafnium, Tantalum, Tungsten, Rhenium, Osmium, Iridium, Platinum, Gold, Mercury, Rutherfordium, Dubnium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium, Copernicium Post-transition metals: Aluminium, Gallium, Indium, Tin, Thallium, Lead, Bismuth, Polonium, Nihonium, Flerovium, Moscovium, Livermorium Metalloids: Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium Reactive nonmetals: Hydrogen, Carbon, Nitrogen, Oxygen, Phosphorus, Sulfur, Selenium Halogens: Fluorine, Chlorine, Bromine, Iodine, Astatine, Tennessine Noble gases: Helium, Neon, Argon, Krypton, Xenon, Radon, Oganesson Lanthanides: Lanthanum, Cerium, Praseodymium, Neodymium, Promethium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium Actinides: Actinium, Thorium, Protactinium, Uranium, Neptunium, Plutonium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium, Lawrencium 100% free, no account No ads, no account required, no paid features, no in-app purchases forced on you. For chemistry students, trivia lovers, and anyone who wants to finally tell Silicon and Selenium apart.