XLSX Editor by Loamstack

Open XLSX workbooks, switch sheets, and edit cells and formulas in a local workspace with familiar ribbon commands and a formula bar.

Export supported edits as a source-preserving XLSX workbook copy. Mobile provider saves leave the imported file unchanged. Supported formulas recalculate locally after cell edits. Calculation and authoring coverage are partial; unsupported operations show a diagnostic rather than silently dropping into a value-only save. Macros are not executed, and external-workbook calculation and complex Excel features have limits.

Ordinary workbook editing and export happen on your device. Optional formula assistance is a separate action: review the selected prompt and context before sending it to the displayed provider. AI suggestions can be wrong; review them before applying changes.

Production diagnostics and startup analytics help us operate and improve the app. Routine analytics exclude file contents and document names. See the privacy policy for identifiers, network information, retention and deliberately submitted support requests.

This app is an independent XLSX editor from Shipit Software. It is not affiliated with or endorsed by Microsoft. Microsoft and Excel are trademarks of their respective owners.