A daily updated filename extension database!

APP file extension

The table below provides useful information about the .app file extension. It answers questions such as:

  • What is the .app file?
  • What program do I need to open a .app file?
  • How can the .app file be opened, edited or printed?
  • How can I convert .app files to another format?

We hope you find this page helpful and a valuable resource!

3 extension(s) and 0 alias(es) found in database

✅ SymbianOS Compiled Application

APP file is a SymbianOS Compiled Application. SymbianOS is an operating system designed specifically as a foundation for developing smart devices.
APP format description not yet available
Application: SymbianOS SDK
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
APP aliases:
APP related links:
APP related extensions:
Symbian Install Package

SymbianOS Compiled Resource

Symbian Series 3 Install Package

Android Application Package

SymbianOS Pre-processed Resource

SymbianOS Resource Header

Android Compiled Executable

SymbianOS Dynamic Shared Object

Android Opaque Binary Blob File

Android Optimized Dalvik Executable

✅ Visual FoxPro Application

APP file is a Visual FoxPro Application. Visual FoxPro is a data-centric object-oriented and procedural programming language produced by Microsoft.
Application: Visual FoxPro
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
APP aliases:
APP related links:
APP related extensions:
Visual FoxPro Class Library

Visual FoxPro Program

Visual FoxPro Report

Visual FoxPro Report Memo

Visual FoxPro Memo

Visual FoxPro Form Program

Visual FoxPro Menu Program

Visual FoxPro Query Program

Visual FoxPro Compiled Program

Visual FoxPro DLL

✅ Alphacam Punch Post Data

APP file is an Alphacam Punch Post Data. Alphacam is a leading CAD/CAM software solution for the Woodworking industry.
APP format description not yet available
Category: Data files
Application: Alphacam
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
APP aliases:
APP related links:
APP related extensions:
Alphacam Nest List

Alphacam NC Program

Alphacam User Font

Alphacam 2D/3D Mill Drawing

Alphacam 2D/3D Mill Tool Data

Alphacam 2D/3D Mill Post Data

Alphacam 2D/3D Mill Param Macro

Alphacam 2D/3D Mill VB Macro

Alphacam Lathe Drawing

Alphacam Router Tool Data

Other types of files may also use the .app file extension.

🚫 The .app file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

alp, xpp, qpp, pap, apl, aop, zpp, wpp, pp, apo, ap

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Ableton Live Pack
X++ Source Code
Abacre Paperless Office Portable Document
Alphacam Laser Post Data
ZPanel Package
Corel Painter Paper Texture
O&P Industry AOP Data
Pascal/Delphi Source Code
FreePascal Source Code
JBoss AOP File

🔴 Can't open a .app file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .app file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .app file extension, write to us!

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