Which formulas can I use in a workbook?
The workbook supports arithmetic, cell references and common functions such as SUM, AVERAGE, MIN and MAX. You can use ranges to work across several cells. Formula errors are shown in the grid so a missing reference or circular calculation does not quietly become a convincing number. Check the app’s help for the supported syntax.
Will this open every Excel workbook?
The example is a lightweight spreadsheet with CSV import and export, plus its own editable workbook backup. It does not promise compatibility with every Excel feature or file. Macros, advanced functions and external data connections need separate support; review the imported values before relying on a sheet moved from another tool.
How do I keep a spreadsheet when changing devices?
Save a workbook backup file before you leave the current browser, then open that file on the other device. Browser saving keeps work locally and does not synchronize it through an account. Export CSV when you need the active sheet’s values in another application, while keeping the editable backup for future changes.