About this app
This app shows how neural networks determine prime numbers. Input values are coordinate values on Ulam spiral. If you click "gradient descent", 1000 iterations will be performed. As cost function goes to zero, prime numbers are going to be red and others to be black.
Latest release
What’s New
In app purchase is added. Premium has more features: controls over colors and iterations.
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 15, 2026 · 1:13 PM Free