SumSheet XLSX Editor

Open and edit Excel workbooks

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

SumSheet opens and edits Excel spreadsheets on your device. Named after the most famous formula on the planet, SumSheet runs on the same native XLSX engine that powers SumOffice on the desktop and on the server — so a workbook calculates the same wherever you open it. Change a price and the total recalculates, exactly as it would on a laptop. WHAT IT DOES • Opens .xlsx, .xlsm, .xlsb, .xltx and .xltm — from the Files app, mail, or any app’s “Open in…” • Edits cells in the formula bar and recalculates formulas — across sheets too • 200 worksheet functions: math, text, dates, lookup, logical, financial, engineering • Tables with filters, conditional formatting, number formats, charts — kept as in the file • Keeps the workbook structure intact — sheets, formats, formulas, macros stay in the file YOUR FILES STAY YOURS Editing happens on the device. Workbooks are not uploaded anywhere, and the app does not require an account to open a file. PART OF SUMOFFICE SumOffice is an office suite built around one document engine: the same logic in a desktop application, inside your own product, on a server, and here on the phone. SumDoc is its document counterpart. SumOffice is an independent product and is not affiliated with Microsoft. Learn more: https://sumoffice.com Privacy Policy: https://sumoffice.com/app-privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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Open, edit and save Excel workbooks more reliably. This update includes the latest spreadsheet improvements and better mobile file handling.

Version 2026.4.38

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
    99.1 MB
    Category
    Productivity
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • iPad
      Requires iPadOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 2 more
    • English, Arabic, Russian
    Age Rating
    4+
    In-App Purchases
    Yes
    • SumOffice Pro yearly $29.99
    • SumOffice Pro monthly $4.99
    • Learn More
    Copyright
    © 2026 HEALTH INFORMATIC SECURITY SYSTEM, S.L.
  • Developer Website
  • Privacy Policy

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