Decider is an interesting app because you can evaluate decisions very precisely and generate the most optimal ones. You can navigate from top to bottom, i.e. from general to individual, like the decision list to its decision objects and from there to the categories and back. Categories are very important such as design, ecology and performance in a car. You can rate which criteria mean more with a rating from 1 to 4, e.g. design before performance. Then you can set a grade from 1 to 8 for a certain object (car). This then determines the order of the objects, i.e. the best decision at the top.
Budgets is an interesting app because it allows you to plan your budget and any deviations for each month you have chosen for your budget period. You can navigate Top Down and Bottom Up, i.e. from the general to the individual and back. So you start from your Budget Object, in which you set the Budget Period, and in Navigate to Months you can see all the Months created for the period. Select a Month and navigate to the Categories like Car, Vacation, etc.. In these Categories you set the Budget for the given Month. and within the Category you can create Expense Entries. For a Refresh of the Data you can pull down the List. On the top Level you can select a Budget and tap on the Menu on Chart. To get a graphical Overview.
Tradings is an interesting app because you can use it to manage small (or large) businesses efficiently and clearly. You can navigate Top Down and Bottom Up, i.e. from the General to the Individual and back. So from your Trading such as Art to the Marble, Wood and Copper Categories and each to your Trading Objects with data such as Purchase Date, Purchase Price, Sale Date, Sale Price, Profit. And you can see all this summarized when Navigating Back. You can pull down the List to refresh the Data. On the Top Level you can select trading and tap on Chart in the Menu.