Nowadays the progress gives people an unequalled possibility to facilitate and prettify their life by means of current developments and gadgets. In this article we will speak about personal digital assistant, as well known as best iphone apps which is one of them. PDA doesn’t possess the functions of the phone, it’s a real computer. Reproducing video files, audio files, serving the purpose of a notebook, working with word processors and some other kinds of helpful programs are the peculiarities of it. So in case you are a type of an energetic individual who does not wish to diddle away their time in the course of passages, the PDA would be definitely helpful for you. During long tours you may pass the time seeing a movie, reading a book or using windows mobile downloads with the aid of appropriate pocket PC. It is far easier than to keep about you a thick magazine. Such gadget becomes much more important if you remember that the PDA can hold a number of books or games. Making note that the facility is multitasking, you can listen to audio during reading a book. You can also write in the seeking bar Free mobile games, if you want to obtain plays in your phone.There is no PDA that wouldn’t be equipped with the OS (operational system). Deciding upon a PDA you should adopt a decision about its operational system: PalmOS, Microsoft Windows Mobile or Linux. Collating Linux and Windows, the first is more habitual to most clients though the second has got free software. PalmOS is easy to use, because it’s been specifically designed for the PDA, but during the usage of a couple of tools at the same time faults happen. As soon as you’ve clarified which OS is in accord with, you need to pay attention to more substantial points, like the input medium, processor power, space of fixed memory and main memory, screen size and the possibility of expanding the memory.Each PDA possesses a hardship of power consumption. No maker has yet achieved perfect performance in this field currently.