National Parks Encyclopedia vs STEM Tutor

Explore national parks and their natural and historical context. Read 265 articles, search for a topic, and save discoveries to revisit. START WITH FIVE FREE ARTICLES New readers can choose any five different articles. Your chosen articles stay unlocked, and revisiting them never uses another choice. Existing readers keep previously granted access. MAKE DISCOVERIES YOUR OWN • Search article titles and full text • Follow links between related topics • Save articles and return to your reading position • Continue recent reading and track your progress • Explore connections through the timeline and graph • Find article sources and image credits inside the app CHOOSE YOUR ACCESS Own the full encyclopedia with a one-time purchase for complete offline reading. Or choose monthly or annual Premium for the full encyclopedia plus AI chat grounded in this subject's articles. Eligible new Premium subscribers receive a three-day introductory trial. Subscriptions renew automatically unless canceled through your App Store account. Current local prices and terms appear before purchase. Restore Purchases recovers eligible previous purchases. Earlier full-version ownership includes encyclopedia and offline access; Premium AI requires a subscription. Internet access is required for AI chat and purchases. AI answers may contain errors; consult the linked sources. Article text is derived from Wikipedia. Images come from appropriately licensed Wikimedia Commons and other open sources. Source links, licenses and credits are available in the app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ An encyclopedia for learning, not live trail conditions or emergency navigation.

STEM Tutor is your all-in-one educational companion for K-12 students. With 14 subjects, 1,680 interactive lessons, thousands of quiz questions, and over 2,600 flashcards, there's always something new to learn. Subjects include Spelling, Math, English, Science, Social Studies, US History, Physics, Spanish, French, Biology, Chemistry, Arts & Music, Personal Finance, and Computer Science. Every lesson features tap-to-reveal fun facts and quick-check quizzes that keep students engaged and test understanding as they go. Quizzes are broken into manageable 10-question sets, and flashcards make review easy and effective. Start with 6 free lessons and 1 free quiz per subject at every grade level. Subscribe for $0.99/month to unlock everything — all 1,680 lessons and unlimited quizzes across all 14 subjects and grade levels. Features: 14 subjects covering core academics, languages, arts, and life skills 1,680 interactive lessons with fun facts and comprehension checks Thousands of quiz questions with instant feedback 2,600+ flashcards for quick review Progress tracking across all subjects and grades Clean, distraction-free design built for learning Whether your child is learning to count in Kindergarten or preparing for AP exams in 12th grade, STEM Tutor grows with them every step of the way. Privacy Policy: https://curayt.com/privacy  Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/