A free app for Android, by Valeonom.
It is a great tool to generate CSV (comma-separated values) files from Excel or any other spreadsheet.
You can graph data with a variety of data types. It supports bar chart, line chart, pie chart, and scatter chart. You can also choose from various time intervals to graph, from hourly to yearly.
There are various formats you can choose from, such as date, time, and duration. You can also specify the start and end date and time, if needed.
There are several things to note about the CSV format. First, each column in a CSV file must be separated by a comma. Second, the first row is always the header row, which contains the title of the graph.
