推薦System Activity Monitorhttp://itunes.apple.com/tw/app/system-activity-monitor-3gs/id306192663?mt=8寫是support for iphone 但我用touch三代也很好用幾乎每天用,我是直接擺在常用app下面那四個個人覺得比免費的Memory Sweep好用很多執行速度又快...才$2.99 值得