Peek - Xlsx Viewer

Peek is a fast, clean viewer for Excel (.xlsx) spreadsheet files.

Open any .xlsx file right on your phone and see it exactly as it was designed — cell colors, borders, merged cells, fonts, number formats, and formulas are all preserved. No account, no sign-up, no ads.

KEY FEATURES

• Open Excel (.xlsx) files instantly

• Faithful rendering: cell colors, borders, merged cells, fonts, and number formatting

• See the actual formula behind any cell (=SUM, =IF, and more), not just the result

• Multiple sheets — switch easily with the bottom tabs

• Pinch to zoom in and out

• Cell search — find any value fast

• Share a spreadsheet straight from the app

• Recent files list for quick access

• Works fully offline — your files never leave your device

• Clean, distraction-free interface

• Light and dark mode

• Available in English, Korean, Japanese, and Chinese

FREE

• View all spreadsheets with full formatting

• Cell search

• View cell formulas

• Share files with anyone

• Multiple languages and dark mode

• No ads, ever

PEEK PRO (one-time purchase)

• Edit cells with undo

• Save your edits back to Excel (.xlsx) — original colors, borders, merged cells, and images are kept

• Export to image (PNG) and PDF

PRIVACY FIRST

Peek processes your files entirely on your device. Nothing is uploaded, no personal data is collected, and there are no ads or trackers.

Perfect for quickly checking spreadsheets on the go — invoices, schedules, reports, forms, budgets, and more.

Note: Peek is an independent app and is not affiliated with, endorsed by, or sponsored by Microsoft. "Excel" is a trademark of Microsoft Corporation and is used here only to describe file compatibility.