There are many good-quality, paid duplicate-file-finding apps for Mac. You can find them with a quick trip to the Mac App Store. DupeGuru, dupeGuru Music Edition, and dupeGuru Pictures Edition. RELATED: 10 Ways To Free Up Disk Space on Your Mac Hard Drive. We also recommended dupeGuru for finding duplicate files on Windows. This application is both open-source and cross-platform. Files stored in the APP format are executable files integrated with data compression standards and program logic compilation specifications that are used for creating Mac OS X application files, and these files are appended with the.app extension. The content of an APP file is program logic data that is used by a built-in or third party.

There are 17 other file types using
the APP file extension!

.app - Lotus Symphony add-in application

.app - dBase application generator object

.app - DR-DOS executable application

.app - Visual FoxPro application

.app - Alphacam punch post

.app - ArcPad project file

.app - Psion OVAL data

.app - Timex Data Link USB application

.app - GEM application bundle

.app - CA Visual Objects platform for developer (CAVO) project

.app - Clarion for Windows application

.app - Cybiko computer application file

.app - Team Developer normal mode application

.app - OrbWorks PocketC CE application

.app - Symbian OS application

.app - ThecusOS application

.app - Atari picture image

Bookmark & share this page with others:

APP file extension- Mac application package or core system service

What is app file? How to open app files?

File type specification:

app file icon:

The app file extension is associated with the macOS (Mac OS X) operating system.

The app suffix is used as a container for Mac applications. Under Mac OS X (macOS) it is visible like single application with extension app and it's executable.

Under Windows operating systems this file shows as a directory with *.app suffix containing application files.

Updated: September 19, 2019

The default software associated to open app file:

Company or developer:
Apple, Inc.

macOS is Unix-based desktop operating system, a successor of Mac OS X system for MacBook-family, iMac, Mac Mini and Mac Pro computers, developed and sold by Apple, Inc.

Company or developer:
Apple, Inc.

App For Mac That Figures Out Double Files 2017

OS X or Mac OS X is Unix-based operating system developed by Apple Inc. for Macintosh computers. It contains basic core applications for everyday use, such as Finder basic file manager, Safari for Internet browsing, QuickTime for video, iTunes for managing audio data and iPod, iOS devices management , iMessage instant messaging, Mail, Contacts, Calendar and many more.

The latest version 10.11 of OS X is called El Capitan. It is available to purchase on Mac App Store as well as is distributed with new Mac computers and notebooks. It includes features to improve the security, performance, design and usability.

OS X operating system was replaced by new macOS in 2016!

Company or developer:
Apple, Inc.

Apple Xcode is IDE (integrated development environment) used to create applications for Mac OS X and iOS. Applications are programmed in Objective-C programming language. Xcode is available for Mac OS X.

Related articles:

Help how to open:

MAC OS X (macOS) executable application. You can view only application directory with app suffix contents and files. In Windows environment not executable.

How to convert:

There exist utilities that can help you with conversion of APP format to something like DMG.

Find conversions from app file:

Find converter to app file type:

List of software applications associated to the .app file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open app file, edit app file, convert app file, view app file, play app file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting app files.

Software that open app file - Mac application package or core system service

Programs supporting the exension app on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open app file action.

Apple macOS / Mac OS X:

Main software associated with app file by default:
macOS
Mac OS X

You can convert and open documents in Pages on iPhone, iPad, iPod touch, or Mac. If you don't have an Apple device, you can use Pages online at iCloud.com.

Convert and open documents in Pages on iPhone or iPad

You can work with a variety of file formats in Pages on your iPhone or iPad. Check which formats are compatible with Pages on iPhone and iPad.

Convert a Pages document in Pages on iPhone or iPad

If you want to open a Pages document in another app like Microsoft Word, use Pages to convert the document to an appropriate format.

1. Open the document that you want to convert, then tap the More button .
2. Tap Export.
   
3. Choose a format for your document.
4. If you chose EPUB, set any additional options.
5. Choose how you want to send your document, like with Mail or Messages.

Open a file in Pages on iPhone or iPad

To open a file like a Microsoft Word document in Pages on iPhone or iPad, tap the file in the document manager. If you don’t see the document manager, tap Documents (on iPad) or the back button (on iPhone), then tap the file that you want to open. If a file is dimmed, it’s not in a compatible format.

You can also open a file in Pages from a different app like the Files app, or from an email:

1. Open the other app, then select the document or attachment.
2. Tap the Share button .
3. Tap Copy to Pages. The original file remains intact.

When the file opens, you might get a message that the document will look different. For example, Pages notifies you when fonts are missing. Tap Done to open the document in Pages.

Convert and open documents in Pages for Mac

You can work with a variety of file formats in Pages for Mac. Check which formats are compatible.

Convert a Pages document in Pages for Mac

If you want to open a Pages document in another app like Microsoft Word, use Pages to convert the document to an appropriate format.

1. Open the Pages document that you want to convert.
2. Choose File > Export To, then select the format.
3. In the window that appears, you can choose a different format or set up any additional options. For example, you can require a password to open an exported PDF, choose to use the table of contents in an exported EPUB book, or choose the format for the exported Word document.
   
4. Click Next.
5. Enter a name for your file, then choose a location for the file.
6. Click Export.

To send a file in a specific format through Mail, Messages, AirDrop, or Notes, choose Share > Send a Copy, choose how you want to send the document, then choose a format.

Open a file in Pages for Mac

You can open a file from the Finder or from the Pages app:

• From the Finder, Control-click the file, then choose Open With > Pages. If Pages is the only word processor on your Mac, you can just double-click the file.
• From the Pages for Mac app, choose File > Open, select the file, then click Open. If a file is dimmed, it’s not a compatible format.

When the file opens, you might get a message that the document will look different. For example, Pages notifies you when fonts are missing. You might see also see warnings when you open documents created in older versions of Pages.

Open and convert documents in Pages for iCloud

App For Mac That Figures Out Double Files Online

Pages for iCloud lets you open, edit, and share your files from a supported browser on a Mac or PC. Check which file formats are compatible with Pages for iCloud. If you don't have an Apple device, learn how to create an Apple ID.

Convert a Pages document in Pages for iCloud

1. Sign in to iCloud.com with your Apple ID.
2. Click Pages.
3. In the document manager, click the More button on the file you want to convert, then choose Download a Copy. If you have the document open, click the Tools button in the toolbar, then choose Download a Copy.*
4. Choose a format for the document. The file starts begins to download to your browser’s download location.

* To convert your document to an EPUB book, open the document, click the Tools button in the toolbar, then choose Download a Copy.

Open a file in Pages for iCloud

1. Sign in to iCloud.com with your Apple ID.
2. Click Pages.
3. Drag the file you want to upload into the Pages document manager in your browser. Or click the Upload button , select the file, then click Choose.
4. Double-click the file in the document manager.

Check file format compatibility

Formats you can open in Pages

You can open these file formats in Pages on iPhone, iPad, Mac, and online at iCloud.com:

• All Pages versions
• Microsoft Word: Office Open XML (.docx) and Office 97 or later (.doc)
• Rich Text Format (.rtf/.rtfd)
• Plain Text files (.txt)

Pages on iPhone or iPad:

• Microsoft Word: Office Open XML (.docx)
• Rich Text Format (.rtf/.rtfd)
• PDF
• EPUB

Pages for Mac:

• Microsoft Word: Office Open XML (.docx) and Office 97 or later (.doc)
• Rich Text Format (.rtf/.rtfd)
• Plain Text files (.txt)
• PDF
• EPUB
• Pages ‘09

Pages for iCloud:

• Microsoft Word: Office Open XML (.docx)
• PDF
• EPUB

Learn more

• Pages on iPhone, iPad, Mac, and online at iCloud.com use the same file format. If you create or edit a document in Pages on one platform, you can open it in Pages on any of the other platforms.
• You can update to current versions of Pages on your iPhone or iPad from the App Store. To update Pages on your Mac, use the App Store app on your Mac.
• If you convert a Pages document into Pages ’09-compatible document, learn more about changes that happen when you export to iWork ’09.