The FileOpen Viewer enables authorized users to access documents secured by FileOpen document security and rights management solutions. FileOpen Viewer supports PDF or OPN file formats opened on an iPad, iPhone or iPod touch. Content owners may require that devices be registered or authenticated, and may impose limits on the number of devices allowed. Please contact the document owner or publisher for specific instructions or support.

What’s New

Version 2.4.6

This app has been updated by Apple to display the Apple Watch app icon.

- update for iOS 11
- fixed custom error messages

One of the last updates before we release a completely new app.

Ratings and Reviews

1.0 out of 5
27 Ratings

27 Ratings

Kroberson ,


Yes, it will open a decrypted file. But that’s where the usefulness ends.

You would think that, once a PDF file is decrypted one would be able to save the decrypted file to the same device for opening in Adobe Acrobat.

Just to be clear this is NOT a plug in for Acrobat.

This is a stand alone, excruciatingly slow, file decryption and (practically unusable) file viewer.

The file has to be decrypted each time the file is opened. This process takes several minutes on every use. Once into the file there are no search, find, highlight, or any other kind of tools. The file scrolls slowly when manipulated.

The files I’m attempting to use are for my business. The glacial speed of this app has caused embarrassment and frustration on many occasions.

I have no other choice as the publisher of the documents insist on using this awful program.

Also note, the last plate was in 2017. It is obvious to me that FileOpen management has no real interest in supporting iOS users.

If you can avoid encrypting with FileOpen, do yourself and your customers a favor and use a different method than FileOpen.

Danny Chitwood ,

Absolute garbage.

I would give it zero stars if I could. Takes ages to decrypt files if you can even make it that far. Not only that, you have to decrypt the file every time you open it and if your device enters sleep mode or your autorotate activates? Forget about it. Doesn’t run in the background, either. And now I’m getting “server timeout” errors on files I’ve opened dozens of times so this app is effectively useless to me. I love the mastersofanatomy ebooks and this app is required to open them but it’s not worth the headache.

kadabasp ,

Totally meaningless

I understand the need for encryption of pdf files and this app is supposed to help view pdf files that have FileOpen encryption. However, it is absolutely useless and meaningless to spend ungodly time waiting for the file to decrypt in the viewer just to find out that once you close it, you will have to go through the process again. Why would someone even think of something like this? If I could give this a negative rating, it would still be an understatement. The UI is terrible too.

App Privacy

The developer, FileOpen Systems Inc., has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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