Fibonacci Number Generator

Available for Windows 10 (PC, Phone, Xbox One, and other devices).

Prime Number Finder

Prime Number Finder can find any of the first one-hundred million primes. Available now on Google Play (Android 2.3.3 and above), the Windows Store (Windows 8.1+ and Windows Phone 8.1+), and the Chrome Web Store. Also available for download for OS X (10.8 "Mountain Lion" and later, 64-bit only).