Android and iPhone
Every file in one quiet stack.
DocuStack is a native library for reading, editing, scanning, and converting documents. Open PDF, Word, Excel, PowerPoint, text, and images. Scan pages, pull text with OCR, convert formats, and mark up PDFs — all on this phone.
Library
Home
Scan
Camera or library
OCR
Text on device
Recents
Six formats, full tools
PDF, Word, Excel, PowerPoint, plain text, and images open in the app. PDFs get a full annotation toolbar. Office files open in native editors, and conversions keep page layout when you move between PDF and Word.
View, search, annotate, save, share, merge, split, compress
DOCX
Edit pages, convert to PDF, keep layout when you convert
XLSX
Edit sheets with a formula subset, then export to PDF
PPTX
Edit slides freeform, then export to PDF
TXT
Plain text with in-document search
Images
Photos in the library, scan pages, or build a PDF
A library, not a dump of downloads
Import
Bring files in from Files, Drive, or Mail. DocuStack copies them into a private library on this phone.
Recents and quick actions
Home keeps Scan Document and OCR Text above the last files you opened, with Merge, Split, Compress, and Images in a 2×2 grid.
Favorites and folders
Bookmark a file from the viewer or the row menu. Real folders keep work sorted in the Files tab.
Recycler
Delete is a soft drop. Restore a file, or empty the bin when you are sure.
Scan and OCR on the device
Capture a page, crop it, filter every page at once or one by one, then export. OCR reads text without sending the image anywhere.
Scan document
CAMCapture with the camera or pick from the library. Crop freely, filter pages, then export PDF, JPEG, or PNG.
OCR text
OCRRead text from a photo or PDF on the device. Select a portion, copy, share, save TXT, or export DOCX.
Tools on home and in Tools
Home keeps the original four PDF jobs. The Tools tab adds conversions. Every finished file shows its name in emerald with an Open button.
On Home
Merge
PDFStack several PDFs into one file, in the order you choose.
Split
PDFBreak a single PDF into parts by page range.
Compress
PDFRewrite pages at a smaller size when a file is too heavy to send.
Images to PDF
IMGTurn a set of pictures into a single PDF, in order.
Conversions
PDF to Word
PDFKeep the page look as a Word file you can open and edit in DocuStack.
Word to PDF
DOCXPaint the Word page back to PDF, including layout pages from a conversion.
PowerPoint to PDF
PPTXExport every slide to a PDF page on this phone.
Excel to PDF
XLSXPrint each sheet to a PDF page you can share or archive.
Office editors on the phone
Word, Excel, and PowerPoint open for editing in DocuStack. They are focused editors, not a desktop suite, and they stay offline with the rest of the app.
Word
Open a DOCX layout page, pick a line, edit it under the page with bold, italic, underline, and size, then save.
Excel
Edit cells with a practical formula subset. Export the sheet to PDF when you need a fixed copy.
PowerPoint
Arrange slides freeform on the device, then export the deck to PDF from Tools.
A viewer with a real toolbar
The document name sits on top, with search, share, and a clear Save. Annotation tools stay along the bottom. Pinch zoom still works while a tool is active.
Read and search
Scroll, pinch zoom, and jump pages. Search highlights matches on the page you see, with previous and next.
Mark and select
Read, Select, Highlight, Draw, Text, Sign, and Image. Tap the active tool again to leave it. Save chooses where the file goes, or keeps a draft.
Undo that lasts
Undo and redo stay with the document, back to the original, even after you close the app.
Page 4
Revenue held through the quarter. The operating margin moved with hiring, not with price.
On this phone only
There is no DocuStack account and no internet permission in the app. Imported files, scans, OCR results, favorites, and annotations stay in private app storage. Sharing is a system share sheet you start yourself. The marketing site does not see your documents.