LightCell is a native spreadsheet app for opening, editing, and saving .xlsx, .xls, and .csv files.

Available now on the Mac App Store and the Microsoft Store. The free version is the complete editor — every editing tool, and saving your work as .lcl, included. A one-time in-app purchase adds Excel export and write-back, CSV export, and printing.

Built for clarity and speed, LightCell focuses on the core spreadsheet workflow:

Open existing workbooks quickly
Work with large sheets smoothly
Edit cells, formulas, styles, borders, and alignment
Save back to Excel-compatible formats
Manage multiple documents in separate windows

Key Features

Open .xlsx, .xls, and .csv
Save and export .xlsx and .csv
Fast loading for large worksheets
Formula bar with autocomplete and function help
Built-in function reference screen
Copy and paste as text, HTML, and image
Cell formatting tools for fonts, colors, borders, alignment, number formats, and text orientation
Merge and split cells
Auto-fit rows and columns
Print support
Undo and redo
Multiple document windows

LightCell is designed for people who need a practical spreadsheet tool without unnecessary clutter.