Archived App (Last seen on 19 Jan 2026)
This is an archived listing of the app previously available on the App Store.
This app uses the Monte Carlo method to visually approximate the value of pi. It generates random points within a square to demonstrate how the ratio of points inside an inscribed circle relates to pi, showing its evolution over time with interactive graphs and performance metrics.
1.2
March 20, 2021
Fixed a bug in graphics routine.
PiSwift uses the Monte Carlo method. It generates random points within a square and calculates the ratio of points that fall within an inscribed circle. Multiplying this ratio by 4 approximates the value of pi.
PiSwift provides two main graphs: a scatter plot showing the sampled points and a graph that visualizes the evolution of the calculated pi value or delta (the percentage difference from the true value of pi) as more points are added.
Yes, you can adjust the graphs by double-tapping to change the origin, panning to move the graph, and using pinch gestures to scale the X and Y axes independently. The stepper in the graph view also allows for independent scaling of delta.
The number of points directly influences the approximation's accuracy and the calculation time. More points generally lead to a more accurate approximation of pi but require more processing time on your device. You can select the number of points using a stepper.
Yes, PiSwift calculates and displays how long it takes for your device to generate the random points and perform the pi calculation. This feature helps users understand device performance for computational tasks.
PiSwift has an age rating of 4+, making it accessible for a wide range of users. Its visual approach to a mathematical concept can be engaging for students learning about approximations and simulations.
The latest version of PiSwift is 1.2, which was last updated on March 20, 2021. This indicates a moderate update frequency for the application.
No, PiSwift does not contain advertisements. It is a free application that focuses on providing an educational experience without interruptions from ads.
