Protozoan Identification vs Periodic Table 2026

The Protozoan Identification app features Carolina images and videos. The app includes an interactive dichotomous key, 3 labeling activities for practice and study, 20 additional photos of unique protozoans, and 8 protozoan video clips. *The Lite version includes only one labeling activity, two video, and two photos.

Discover the beauty of chemistry with the most interactive periodic table on the App Store. EXPLORE ALL 118 ELEMENTS Tap any element to reveal its properties — from atomic mass and electron configuration to crystal structure and oxidation states. Beautiful color-coded categories make it easy to understand element families at a glance. TEST YOUR KNOWLEDGE Challenge yourself with 5 quiz types: Name to Symbol, Symbol to Name, Atomic Number to Element, Element to Category, and Property Matching. Track your scores and watch your chemistry knowledge grow. EARN ACHIEVEMENTS & LEVEL UP Unlock 15 unique achievements as you explore and learn. Earn XP for every element viewed and quiz completed. Rise through 6 levels from Atom to Element Master. DAILY CHALLENGES & STREAKS Stay motivated with rotating daily challenges and streak tracking. Build your chemistry habit one element at a time. WHAT'S INCLUDED FREE: - Full interactive periodic table with all 118 elements - Basic element properties (atomic number, symbol, name, mass, category, state) - 3 quizzes per day PRO FEATURES ($4.99/year): - Advanced properties: electron configuration, electronegativity, melting/boiling points, density, crystal structure, oxidation states, atomic radius, ionization energy - Unlimited quizzes — all 5 types - Full achievement system with XP levels - Streak tracking & daily challenges - Premium themes - Personal notes on any element Perfect for students, teachers, chemistry enthusiasts, and anyone curious about the building blocks of our universe. Start your free trial today — 3 days free, then just $4.99/year. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/