Earth Primer vs ElementBuddy

Discover how our planet works through play! Create volcanoes, sculpt mountains, and control the forces of nature with your fingertips. Earth Primer defies existing genres, combining aspects of science books, toys, simulations, and games. It is a new kind of interactive experience which joins the guided quality of a book with open ended simulation play. • App Store Best of 2015 • Best New App • Featured Education App • "BEAUTIFUL ... ENGAGING ... WELL DESIGNED." –Kristie Lu Stout | CNN “EFFORTLESSLY BEAUTIFUL... perfectly...realizes the promise of a truly interactive textbook.” –John Brownlee | Fast Company "THE FUTURE OF EDUCATION... sets a high benchmark for what educational apps should be aspiring to." –Luke Dormehl | Cult of Mac “INSPIRING ... a reminder that interactive media is a young and undeveloped world itself.” –Kyle VanHemert | WIRED “PLAYFUL, child-like, beautifully designed reenvisioning of the book” –IndieCade “The MOST AWESOME APP EVER for teaching Geomorphology to a young audience” –Alan Parkinson | Award Winning Teacher “one of the most deluxe, and memorable educational apps available... AN ABSOLUTE MUST” 5/5 –Trevor Sheridan | Apple n Apps “A TOUR DE FORCE” –Bret Victor "This is much more than a toy. It is a catalyst for thinking about our world. ... TRULY A JOY." –Samuel Arbesman | WIRED "I want every book to be this awesome. ...ABSOLUTELY WORTH EVERY CENT." –Owen Williams | The Next Web Features • Discover how Earth works through play. • The forces of nature are at your fingertips—make volcanoes, shape sand dunes, form glaciers, sculpt mountains, push around tectonic plates, paint with wind, heat up magma—and more! • 20 different tools to unlock. • Richly interactive geological simulations. • Five chapters: Earth's Interior, Surface, Water Cycle, Biomes, and Sandbox. • Sandbox mode.

Explore all 118 elements of the periodic table in a beautifully designed, interactive reference built for curious minds — from students to science enthusiasts. INTERACTIVE TABLE Browse the complete periodic table in its classic layout. Tap any element to reveal its symbol, atomic number, atomic mass, electron configuration, discovery year, and more. Filter by category to highlight alkali metals, noble gases, transition metals, and every group in between. ELEMENT DETAIL CARDS Dive deeper into any element with a rich detail card. Hear the element name spoken aloud with text-to-speech, explore its physical properties, and see exactly where it fits in the periodic table. QUIZ MODE Put your knowledge to the test with four quiz types: • Symbol → Name: identify the element from its symbol • Name → Symbol: recall the correct chemical symbol • Atomic Number: match each element to its number • Category: classify elements by their group Choose from 5, 10, or 20 questions per session and track your score at the end. DESIGNED FOR IPHONE & IPAD The full periodic table shape renders beautifully on every screen size, in both portrait and landscape. Dark mode supported. Whether you're studying for an exam, brushing up on chemistry, or just fascinated by the building blocks of matter — this is the periodic table app you've been looking for.