iOS: Sometimes, you just want to know everything that's going on with your iPhone or iPad. Omnistat is an app that does just that. It gives you lots of info about your device, and it displays it all right in the Notification Center.
Omnistat can show you your device name, model, current OS version, Wi-Fi network, IP address, data usage, cellular IP address, device storage, RAM information, CPU usage, running processes, battery state, and even an estimation of battery time remaining. You can select which of these stats show up in the Notification Center, or launch the app to get a more detailed look. If you're obsessively tweaking your iOS device's usage, Omnistat is a great way to track what's going on with it.
Omnistat ($2.49) [iTunes App Store]