About this app
Swipe left or right on each dancing peacock spider to create spiders with specific traits. The peacock spiders vary in three traits: tail size, tail colour, and dance speed. As you explore each trait, you’ll learn about correlated selection and how the value of a trait changes the relative effect of selection, and why populations vary in phenotypes. The intuitive interface allows you to quickly grasp science concepts and test different ideas on how selection functions.
Latest release
What’s New
Bug fixes and performance improvements.
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 · 9:44 PM Free
Screenshots
