About this app
Sound Needs a Medium to Travel by EduTech Era is an educational app that helps students understand the fundamental concept that sound requires a medium—solid, liquid, or gas—to travel. The app explains how sound waves propagate through different materials, why sound cannot travel in a vacuum, and how the medium affects speed and clarity of sound. With clear explanations, diagrams, and simple experiments, students can observe how sound behaves in solids, liquids, and gases. The app uses interactive demonstrations to make learning engaging and easy to understand. Ideal for students, teachers, and beginners, this app strengthens understanding of basic physics concepts related to sound, vibrations, and energy transfer. It is fully aligned with school science curriculum, making it perfect for classroom learning and self-study.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 30, 2026 · 9:43 PM $0.99
Screenshots
