iPad maintenance

Is the any suggested maintenance for application usage? Ie like defragging your windows disk drive. When you add and delete apps does the system ever get fragmented. It seems my IPad is crashing on a more regular basis then before. I had a 32G with 3G and at least 11G of available

Space. Even when in apples own App store it crashes regularly. I very rarely sync with my PC, is there any benefit to sync with PC. Does it reallocate apps and gather fragmented memory when whe synchronization occurs? Looking for some guidance to help me perform any smart IPad maintenance if possible to help system run better and faster.