SumSheet — XLSX Editor

XLSX spreadsheets, native core

Only for Mac

Free

Mac

SumSheet opens and edits Excel workbooks (.xlsx) with its own calculation core — the engine behind the live demo cabins on sumoffice.com. What you get • Open, edit and save .xlsx workbooks: sheets, cell formatting, number formats, formulas with recalculation, charts and shapes. • 384 worksheet functions verified against Excel by value (of 451 declared — the full list is published at sumoffice.com/capabilities). • Find, sort and filter; freeze panes; print. • Interface follows your system language (English and Russian). What SumSheet does not do • It does not upload your workbooks anywhere and does not require an account. Privacy: https://sumoffice.com/app-privacy Support: https://sumoffice.com/contact

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Export all sheets to CSV (ZIP) from the File menu — every sheet as its own CSV with the values you see, packed into one archive. Fixes and smaller improvements.

Version 2026.3.33

The developer, HEALTH INFORMATIC SECURITY SYSTEM, S.L., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • HEALTH INFORMATIC SECURITY SYSTEM SL
    Size
    • 123.4 MB
    Category
    • Productivity
    Compatibility
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    Languages
    English and 51 more
    • English, Afrikaans, Amharic, Arabic, Bengali, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Latvian, Lithuanian, Malay, Malayalam, Marathi, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Slovenian, Spanish, Swahili, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
    Age Rating
    4+
    Copyright
    • © 2026 Health Informatic Security System, S.L.
  • Developer Website
  • Privacy Policy

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