There are 18 other file types using
the APP file extension!

app icon.app - Mac application package or core system service [common]

empty icon.app - Lotus Symphony add-in application

empty icon.app - dBase application generator object

empty icon.app - DR-DOS executable application

app icon.app - Visual FoxPro application

app icon.app - Alphacam punch post

empty icon.app - ArcPad project file

empty icon.app - Psion OVAL data

empty icon.app - Timex Data Link USB application

empty icon.app - GEM application bundle

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

empty icon.app - Clarion for Windows application

empty icon.app - Cybiko computer application file

empty icon.app - Team Developer normal mode application

empty icon.app - OrbWorks PocketC CE application

empty icon.app - Symbian OS application

empty icon.app - ThecusOS application

empty icon.app - HarmonyOS App Package

APP file extension - Atari picture image

What is app file? How to open app files?

File type specification:

Bitmap image file type icon Bitmap image file type

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.

This app file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

The default software associated to open app file:

RECOIL icon

RECOIL  Multiplatform software

Company or developer:
Piotr Fusik and Adrian Matoga

RECOIL is picture image viewer of picture image formats from classic computers.

Help how to open:

Use RECOIL to open *.app files.

How to convert:

Probably can be exported to other formats.

List of recommended 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).

app file viewer - programs that view app file - Atari picture image

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

Multiplatform:

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