Files never uploaded
Everything is processed on your device — no uploads, no content collection, no sensitive permissions.
Flagship product
One Office
A local document toolkit built natively for Android, iOS and HarmonyOS. Preview, edit, convert and process PDFs — without your files ever leaving the device.
A document experience rebuilt for the phone
One Office starts from a simple idea: opening a document on your phone should feel as calm as on your computer. PDF, Word, Excel and PowerPoint open directly, with pinch-to-zoom and continuous scrolling — everyday actions within reach.
Editing and conversion need no cloud: rich text in DOCX, cells in XLSX and text boxes in PPTX are edited in place and written back; Office to PDF conversion, image-to-PDF, merge and split, encryption — all processed on the device.
Privacy is a product principle: no uploads, no content collection, no sensitive permissions. All three apps are built natively rather than wrapped from one codebase, so the same experience carries across Android, iOS and HarmonyOS. One Office is also the first step of our global strategy — one product serving users worldwide, released on Google Play, the App Store and leading stores in China in parallel.
Core capabilities
Light and fast
About 13 MB on Google Play — a tiny install with rendering tuned for mobile, so large files stay smooth.
All-format preview
Open PDF, Word, Excel and PowerPoint directly — plus ODF, CSV/TSV and common text formats.
In-place editing
Rich text in DOCX, cells in XLSX, text boxes in PPTX and plain TXT — changes write back to the original file.
Format conversion
Convert Word/Excel/PPT to and from PDF, turn images into PDFs — one tap, saved locally.
PDF toolbox
Merge, split, extract pages, add or remove watermarks, encrypt and decrypt — the everyday tools are all here.
Product information
Product One Office
Platforms Android / iOS / HarmonyOS
Build Native on all three platforms — no cross-platform wrapper
Type Local document toolkit (preview / edit / convert / PDF tools)
Formats PDF, DOCX, XLSX, PPTX, ODT/ODS/ODP, CSV/TSV, TXT and more
Languages Simplified Chinese / English
Download size About 13 MB (Android / Google Play channel)
Distribution Google Play, App Store, Huawei AppGallery (HarmonyOS) and major stores in China