About this app
Chemical Valence is an app designed to help you learn the basics about chemical bonding. This app provides a fun game-like, intuitive interface in which you push valence electrons around to make molecules. If you form the correct 2D Lewis dot structure, you are rewarded with a rotatable 3D structure that helps you visualize the real geometry of the molecule. As your understanding grows, each level gives you more complicated structures to solve. Use the narrative, definitions and open-ended reflection questions (with hints!) to guide your understanding. This app is suitable for individual study or for use in a classroom.
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included. Updated for iOS 11.
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 21, 2026 · 1:16 PM Free
Screenshots
