PDF Reader(KDAN PDF): Edit PDF

Review by eFreeware

KDAN PDF, from Kdan Mobile Software Ltd., is a business app built around one job: handling PDFs on a phone or tablet. Reading is only part of it. It works as a document workspace where you view, annotate, scan, sign and convert files. It is free to install, with ads and in-app purchases, and it has been on Google Play since July 2014.

The main reason to consider it is the breadth of what sits in one app. Rather than opening a reader for one task and a scanner for another, you get annotation, signatures, text editing and file management together, plus a shared library that pulls in files from your computer, cloud storage or other apps. The install numbers, over 10 million, suggest plenty of people have tried it, and the 3.7 average across 125,624 ratings suggests a mixed reception rather than universal praise.

What I find most interesting is that the app aims at both quick jobs and longer ones. Signing a form and reading a report are different kinds of work, and KDAN PDF tries to cover both without asking you to leave for another tool.

Reading that goes beyond a single page

The reader supports PDF, text, ePub and image files, so a downloaded manual, an ebook and a scanned page can live in the same library. Text Reflow rearranges a document to fit the screen, which matters on a phone where a fixed page layout means constant pinching. You can also switch between horizontal and vertical scrolling depending on how you like to move through a long document.

Navigation tools are the ones you would expect from a serious reader: jump to a page, search for text, and use bookmarks, an outline or a thumbnail list to find your place. In Text Reflow mode the app can also read text aloud, which turns a document into something you can listen to.

The file formats and the reading modes are the foundation everything else builds on, and they are the part most people will use daily.

Marking up and signing documents

Annotation covers highlighting, underlining and strikeout, which is what most people need when reviewing a contract or marking up a study text. Beyond that you can drop in predesigned stamps such as Approved, Sign Here or Confidential, and add shapes and text boxes where a comment needs to sit in a specific spot.

Signing happens directly on the screen, and signatures can be saved in the library so you are not redrawing the same one each time. Handwritten notes work with a finger or a stylus, which makes the app usable for margin notes on a tablet.

Editing text is the feature that separates this from a pure reader. The developer says you can correct typos and update existing text in a PDF, which is unusual because most PDFs are treated as fixed documents. That capability alone will decide whether the app fits your workflow.

Scanning, converting and keeping files in order

Scans can be created and combined into multi-page PDFs, which covers receipts, printed forms and pages from a book. Files can be imported from a computer, cloud storage or other apps, and material from the web or email attachments can be stored in the library, so documents do not have to be hunted down again later.

File management is more complete than in many readers. You can zip and unzip files and rename files and folders, which sounds minor until you are dealing with a download full of scanned pages with meaningless names.

Sharing goes through email or a cloud service, and the app supports 11 languages, including English, Spanish, French, German, Japanese, Korean, Russian and Portuguese, along with Traditional and Simplified Chinese and Italian.

What Document 365 adds

Several of the more advanced tools sit behind Document 365, the subscription tier. It unlocks the full feature set across Android, iOS, Windows and Mac, so the same document can be worked on from a phone, a tablet or a desktop. For anyone who moves between devices, that continuity is the strongest argument for paying.

The subscription also brings a set of extras that the free experience does not include: password protection for the app, night viewing mode, margin hiding, and page tools for rotating, rearranging, adding, deleting and extracting pages. Conversion to and from PDF is part of it too, along with sending faxes from your devices, a link for sharing files and 1 TB of space on KDAN Cloud.

I would treat the subscription as the dividing line for this app. The core reading, annotating and signing features are what most people will touch, while the document-assembly and conversion tools are the ones that push it toward being a full office utility.

Ads, purchases and the price of breadth

The app is free to download and supported by ads, and it offers in-app purchases. Document 365 is the paid tier, and it is the route to the cross-platform features and the cloud storage. Anyone considering the app should know that the free version and the subscribed version are not the same product.

The other trade-off is focus. KDAN PDF is trying to be a reader, an annotator, a scanner, a signer and a converter at once, and that breadth is the point of installing it. If your needs are narrow, all of that surface area may be more than you want. The 3.7 average from a large number of ratings is a reminder that a broad feature set does not satisfy everyone equally.

One more thing worth noting is the recent update, which fixed a Microsoft third-party sign-in issue and problems with PDF editing, and introduced KDAN PDF MCP for Claude and ChatGPT so an authorized assistant can work with PDFs through conversation. That last item shows where the developer is investing.

Suited to contract work, study and paper-heavy jobs

This is an app for people whose work or study runs on documents. If you sign agreements, review drafts, mark up reports or keep a library of reading material on a phone or tablet, the combination of annotation, signatures and text editing covers the whole cycle in one place. Students dealing with lecture notes and ebooks fit the same profile, since ePub and text files sit alongside PDFs.

It also suits anyone who wants their documents to follow them between devices. The Document 365 tier covers Android, iOS, Windows and Mac, which is unusual for a mobile-first reader and useful if your phone is not the only place you work.

The awards the developer lists, including recognition from TechRadar in 2019 and tom's guide in 2017, point to a long-standing reputation rather than a new arrival. That history is reassuring for an app holding important files, though the current rating average is the more relevant signal for anyone deciding today.

A document workspace for people who sign and edit PDFs

KDAN PDF is worth installing if your PDFs need more than reading. Highlighting, stamps, on-screen signatures, text corrections and scanning cover the tasks that usually send people looking for a second app, and the file management tools keep the results organized. The free version with ads is a reasonable way to see whether the workflow fits before considering Document 365.

The subscription is the part to weigh carefully. It is what unlocks cross-platform access, the page assembly tools, conversion, faxing and the 1 TB of cloud storage, and without it you are working with a capable but more limited reader. For someone who handles contracts, coursework or paperwork regularly, that trade-off is easy to justify. For occasional reading, the free tier is likely enough.

My recommendation is to install it, work through a real document or two, and decide from there whether the paid tier earns a place in your routine.

What's new in version 3.46.1

Bug Fixes - Fixed an issue with Microsoft third-party sign-in. - Fixed issues related to PDF editing features. Improvements - Introducing KDAN PDF MCP for Claude and ChatGPT, enabling your authorized AI assistant to handle PDFs through natural, conversational workflows. - Performance improvements and stability enhancements for a smoother experience