How you use it
Four steps, and none of them involve an account.
Tap a document in your file manager, email, or chat and choose Folio — or open Folio and pick the file yourself. It registers for every format it reads.
Folio PDF. A free PDF reader for Android.
No ads, no in-app purchases, no account — and no way to reach the internet, by design. Reads, searches and copies PDFs, and opens Word, Excel and PowerPoint files, Markdown, plain text and more in the same app.
Version 1.1.8 · 4.2 MB · released Sep 13, 2026
SHA-256b8e6fe5578ffb27245677bc7315e66aa88c9da053bded029b49ae8c5cdda8215.sha256 file
Ten formats. Eight different screens.
A file extension in a list tells you the app accepts it. What you want to know is what happens after you tap it — so pick one.
It has no way to reach the internet.
Not switched off — absent. Folio asks for no permissions and removes internet access from every part of the app, so it cannot open a connection.
What actually shipsuses-permission app.classeve.folio.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
That is the whole list: one internal permission the app grants itself, which reaches nothing outside the app and never asks you anything. These are the entries you will not find in its manifest:
- INTERNET
- ACCESS_NETWORK_STATE
- READ_EXTERNAL_STORAGE
- MANAGE_EXTERNAL_STORAGE
- ACCESS_FINE_LOCATION
- CAMERA
- RECORD_AUDIO
- READ_CONTACTS
Using it
Android version
Android 9 or laterAndroid 9 or later. That is the whole requirement.
System surfaces
Android's ownThe file picker, share sheet and print flow are Android's own, so they look the way your phone draws them.
Every line in this ledger is nothing.
Reading a document should not cost anything, and it should not cost anything else either.
- Money
- Nothing
- subscription
- in-app purchase
- ads
- An account
- None
- sign-up
- password
There is nothing to sign in to. The app has no idea who you are.
- Your network
- It cannot reach one
- INTERNET
- ACCESS_NETWORK_STATE
Not switched off — absent from the shipped manifest.
- Your storage
- Only the file you open
- READ_EXTERNAL_STORAGE
- MANAGE_EXTERNAL_STORAGE
The system picker hands the app one file. It has no permission to look at the rest.
- Your documents
- They stay on the phone
Nothing can leave over a network the app has no permission to reach. Sharing is a thing you do, not a thing it does.
The one thing it does ask forAndroid 9 or later
That is the whole requirement — there is no second one.
Folio is part of the ClassEve family, but it does not want a ClassEve account any more than it wants any other kind. Open it, point it at a file, read.
Common questions
What is Folio PDF?
Folio PDF is a free PDF reader for Android with no ads, no in-app purchases and no account. It also opens nine other document formats — Word, RTF, sheets, slides, JSON, XML, Markdown and text — in the same app, and it declares no Internet permission, so it cannot send a document anywhere.
What file formats does Folio PDF open?
Ten: .pdf, .docx, .rtf, .xlsx, .csv, .pptx, .json, .xml, .md and plain text.
Is Folio PDF really free, with no ads?
Yes. No subscription, no in-app purchase and no ads.
Does Folio PDF require an account?
No. There is no sign-up. Open the app, pick a file, and read.
Is it private and offline?
Yes, and you can check it. The shipped app carries no Internet permission at all, so it cannot open a network connection. A document leaves the phone only through a share or print you tap yourself.
What Android version is required?
Android 9 or later. Get it on Google Play, or download the APK directly from the Folio PDF page.
Can Folio PDF search or copy PDF text?
Yes. Folio PDF includes PDF search and long-press copy of the text on the current page.