Centrallo – Notes Lists Share - One of the best apps for keeping personal notes. Its main difference is that it incorporates a whole range of different applications. You will be able to easily structure information, by setting desired parameters and tying specific materials to each of the notes. Also, you can create check sheets, it is very helpful if you are going to travel. In addition, you will be able to work on compiling the lists in droves, because this app gives you the opportunity to create shared documents, access to which will have all members of the group.