As its name firmly states, Simple Arithmetics is a straightforward application that allows you or your child to practice some of the most basic mathematical operations such as additions, subtractions, multiplications, and divisions with results ranging from 0 to 400.
You can get started with this app right away and without much hassle, since it does not have any particular requirements and it doesn't even require installation. That said, just download the package, unzip it, and launch the app via its executable file.
You are greeted by a simplistic user screen and, naturally, if it's the first time using this app, you are required to add a new one by entering the name in the displayed section.
Once logged in, you are greeted by the app's main menu which allows you to start practicing, begin tests, view your progress, and to access the Settings section. Before anything else, it's a good idea to check out this last section first.
For starters, from the Settings section, you can choose the maximum number and the time limit for each test question. Furthermore, you are allowed to choose between multiple modes, to enable or disable the zeros, and the history function, as well as to clear the current history.
Other than that, things should prove to be quite straightforward, even for first-graders, since the app's nothing short than extremely intuitive. It's also worth pointing out that the app provides you with the option to repeat the tests you've just finished, in case you're not satisfied with the results.
Last but not least, note that you're also provided with a comprehensive overview of your results (with the total time and number of solved, incorrect, and missing equations).
Taking everything into account, Simple Arithmetics may just be a straightforward and non-impressive app for first-graders, but there's no denying that it's indeed a very good application. For starters, it's very intuitive to use, the interface while not modern is as clean as they get, and it offers various useful configuration options, as well as a quick way to track your progress.
To make everything even better, there's also a very useful, hefty Help section available