Mac application package or core system service
File type: Program executable file, Email attachment blocked file
Files with app extension are commonly related to app packages for Mac OS X (macOS) operating system for Apple Mac Pro, MacBook Pro, Mac Mini and MacBook Air computers.
Found 19 different file type records with the same app filename suffix.
File type category:
Program executable file
Email attachment blocked file
Date updated: January 8, 2025
File extension app 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.
MAC OS X (macOS) executable application. You can view only application directory with app suffix contents and files. In Windows environment not executable.
There exist utilities that can help you with conversion of APP format to something like DMG.
Software apps that create app files:
Apple macOS / Mac OS X
Software apps that import app files:
Apple macOS / Mac OS X
Much like Windows users, even Mac OS X users can change program icons of their apps. It's not hard a...
File type category:
3d graphics, CAD-CAM-CAE file
Date updated: May 27, 2019
The app file extension is also used by Alphacam, a leading Microsoft Windows CAD/CAM software solution for the Woodworking industry.
The app file used in Alphacam contains punch post data.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software applications that handle other tasks involving app files:
Microsoft Windows
File type category:
GIS, GPS navigation and map file
Date updated: November 9, 2026
ArcPad is GIS software from Esri designed for field mapping and data collection by GIS professionals. It runs on supported Windows Mobile and Windows CE devices.
An .app file stores a saved ArcPad project. The project can bring together the settings and resources needed for field-mapping work in ArcPad.
Open the .app file with ArcPad on a supported Windows Mobile or Windows CE device. Transfer the file to the device if necessary, then open it from ArcPad or the device's file manager.
Open the project in ArcPad and export its underlying map or data layers to formats supported by that installation when an exchange copy is needed.
File type category:
Bitmap image file
Date updated: May 6, 2019
Record marked as obsolete and not updated for a long time.
The app file extension is related to picture image file format used by Atari 800, 400, 130, 65 XE and XL family of 8-bit computers, released in 1979 by Atari.
The app file stores picture image in 80x192 resolution with 256 colors.
Use RECOIL to open *.app files.
Probably can be exported to other formats.
File type category:
Source code and script file
Date updated: February 18, 2019
Record marked as obsolete and not updated for a long time.
The app file extension is associated with the Visual Objects an object oriented applications development platform for Microsoft Windows operating system, developed by CA Technologies.
The app file stores programming project.
Software applications that handle other tasks involving app files:
Microsoft Windows
Visual Objects
File type category:
Program executable file
Date updated: December 12, 2018
The app file extension is also associated with the Clarion, a 4GL, multi-paradigm, programming language and Integrated Development Environment developed by SoftVelocity.
This type of .app files stores application created in Clarion for Windows.
Probably can be opened using Clarion. We do not know about any other 3rd party software capable of handling this file type.
A conversion of this file type is unlikely.
Software applications that can open app files:
Microsoft Windows
File type category:
Program executable file
Date updated: October 16, 2026
Record marked as obsolete and not updated for a long time.
The app file extension was used for applications distributed for Cybiko handheld computers.
Cybiko was a handheld computer introduced in May 2000 for teenagers. It included its own two-way radio text-messaging system and a QWERTY keyboard used with a stylus.
More than 430 "official" freeware games and applications were available for the platform. An MP3 player add-on and a SmartMedia card reader were also produced for the device.
The company stopped manufacturing the units after two product versions and only a few years on the market. The format and hardware are obsolete, although a hobbyist community continues to use Cybiko devices because of their unique radio-messaging hardware.
An .app file was intended to run on a compatible Cybiko handheld computer. Because the Cybiko platform is obsolete, compatible hardware or archival Cybiko software may be required to use the file.
Cybiko application files are executable programs rather than documents intended for conversion. They are not normally converted into modern desktop or mobile applications.
To preserve or reuse the software, keep the original file and use compatible Cybiko hardware or software.
File type category:
Various data file
Date updated: July 16, 2024
The app file extension is associated with the dBase a database engine, a form engine and database programming language for various platforms.
The app file stores object created by the dBase application generator feature.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
File type category:
Program executable file
Date updated: February 26, 2019
Record marked as obsolete and not updated for a long time.
The app file extension is associated with DR-DOS, once a popular PC operating system that was originally created and developed up to version 6.0 by Digital Research. The .app file contains application executable.
Software applications that handle other tasks involving app files:
Microsoft MS-DOS
File type category:
Program executable file
Date updated: October 24, 2026
Record marked as obsolete and not updated for a long time.
The .app file extension is associated with the Graphics Environment Manager (GEM), an operating environment for DOS systems developed by Digital Research in 1985.
A GEM .app file contains a GEM application bundle. It provides the application that GEM loads and runs within its graphical environment.
GEM was designed for use across multiple computer platforms, including DOS-based systems. This format is obsolete and is no longer commonly used.
Open the file in a compatible installation of GEM. The file must be used on a platform supported by GEM; current operating systems generally cannot run it natively.
If no compatible system is available, a suitable emulator or virtual machine may be required to run the GEM environment.
A GEM .app file is an executable application bundle, not a document format, so it cannot usually be converted to a modern file format.
If the original application source code is available, it may be possible to port or recompile the application for another platform. Without the source code, the practical option is to preserve the file and run it in a compatible GEM environment.
Software applications that can open app files:
Multiplatform
File type category:
Mobile phones related file
Date updated: September 2, 2022
File extension app is also used in HarmonyOS, a mobile operating system from Huawei used in their devices.
A typical .app file represents HarmonyOS app and is made up of several HAP files inside the archive. These files are made using the Huawei DevEco Studio.
Can be used only on HarmonyOS platform, but Huawei DevEco Studio can be used to handle or create these files.
Software applications that can open app files:
Microsoft Windows
Software apps that create app files:
Microsoft Windows
Software applications that handle other tasks involving app files:
Microsoft Windows
File type category:
Plugin, addon file
Date updated: January 30, 2019
Record marked as obsolete and not updated for a long time.
The app file extension is associated with the Lotus Symphony an office suite for Windows, Mac and Linux that allows users to create documents, spreadsheets, presentations etc.
The app file stores add-in for Lotus Symphony.
Software apps that import app files:
Microsoft MS-DOS
Software applications that handle other tasks involving app files:
Microsoft MS-DOS
File type category:
Program executable file
Date updated: August 2, 2019
Record marked as obsolete and not updated for a long time.
The app file extension is associated with the PocketC CE development tool for WindowsCE-based devices.
The app file stores application created in PocketC.
OrbWorks PocketC CE is no longer being supported or maintained.
File type category:
Program executable file
Date updated: October 16, 2026
Record marked as obsolete and not updated for a long time.
The app file extension is associated with Psion OVAL, a rapid development environment for programming Psion handheld computers. It belongs to the OVAL programming environment rather than being a general-purpose application format.
Psion computers could be programmed directly on the device with the built-in OPL editor. Developers could also use PC-based development tools, including a software development kit, software development environment or Psion emulator.
Psion OVAL and this format are obsolete. The files are mainly relevant to software preserved from the Psion platform and may require the original development environment or a compatible emulator.
Open the app file with Psion OVAL or a compatible Psion environment. The file may be an OVAL data file intended for use by the development environment rather than a document that can be opened independently.
If OVAL is unavailable, a preserved copy of the original development tools or an appropriate emulator may be required.
The obsolete Psion OVAL app file format is not a standard interchange format.
If the file must be preserved or its contents reused, open it in Psion OVAL or a compatible emulated environment and use any export or save options provided by that software.
File type category:
Program executable file
Email attachment blocked file
Date updated: September 18, 2018
The app file extension is associated with the Symbian OS, a mobile platform used in various smart mobile phones developed by Sony Ericsson, Nokia etc.
The app file stores application for Symbian OS.
Nokia stopped developing of Symbian in 2012.
Use compatible tools to work with *.app files.
Probably cannot be exported to other formats.
File type category:
Program executable file
Date updated: February 8, 2019
The app file extension is associated with the Team Developer, a .NET integrated development environment that allows programmers to develop 32-bit Windows applications.
The app file stores normal mode application data.
Use compatible tools to work with *.app files.
Probably can be converted to other formats.
Software applications that can open app files:
Microsoft Windows
Software apps that create app files:
Microsoft Windows
Software applications that handle other tasks involving app files:
Microsoft Windows
File type category:
Program executable file
Email attachment blocked file
Date updated: December 13, 2018
Record marked as obsolete and not updated for a long time.
The app file extension is associated with the ThecusOS, an operating system for some kind of NAS (network attached storage) devices developed by Thecus.
The app file stores application written for ThecusOS.
Use ThecusOS to open *.app files.
Probably cannot be converted to anything else.
Software applications that can open app files:
Linux/Unix
File type category:
Various data file
Date updated: February 22, 2019
The app file extension is related to Timex Data Link USB an utility for Microsoft Windows that allows users to import schedules from the web into your watch.
The app file stores various data for internal purposes of the Timex Data Link USB.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software applications that handle other tasks involving app files:
Microsoft Windows
File type category:
Program executable file
Date updated: August 9, 2019
Record marked as obsolete and not updated for a long time.
The app file extension is often used for various compiled applications and programs and one of such file types is also generated by Visual FoxPro when a new program is built.
This particular app file type is generated from a .pjx project through Project Manager ► Build function.
You can load this type of .app file to Visual FoxPro and launch the program.
Once the app is compiled from FoxPro database, a conversion seems unlikely. You would need to convert the source database.
Software applications that can open app files:
Microsoft Windows
Software applications that can edit app files:
Microsoft Windows
Software capable of saving app files:
Microsoft Windows
Software apps that create app files:
Microsoft Windows
Online conversions and file conversion information are provided by 101convert.com.
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