Is there a smart phone defrag app for my S2?

Hello there.
My Smartphone's performance has been slow lately. Is there a smart phone defrag application that I can use? I have the 32 GB Samsung Galaxy S2 that has the Exynos chipset, 1 GB RAM, Dual-core 1.2 GHz Cortex-A9 CPU, Mali-400MP GPU and Android OS Jelly Bean.
