Chose any date range, just like for Charts
Select any frequency, from 1 minute to monthly
Use raw or split-adjusted data or the original data as supplied by your provider
Chose different scales (Price scale, Log scale and Percent scale)
Select your favourite date format (including UNIX Timestamp)
Chose your favourite format for fields with no data (n/a, na..) for percentages (x.xx% or x.xxxx)
Include or hide currency symbol and row numbers
Select which fields to download and move the columns to suit your preferred order
Arrange columns as you would like them on a spreadsheet
Choose all the formattings you prefer
One click to save into a CSV file and share it
Clicking on a column lets you add/remove or change the field in the column

Mac Version
Add Column: lets you add a new column
Remove Columns: remove the selected column
Replace Column: change the field in the column
On a Mac you can drag the columns headers to reorder them and size columns by draggin the separator between headers

iOS Version
Size: let you change the column sizes
Move: lets you rearrange the orfer of the columns
Manage: takes you to the menu above