.ipa

What is a .ipa file?

IPA is the iOS app package format — an encrypted ZIP archive installed only through the App Store or TestFlight.

Use caution
Type System
By Apple
MIME application/octet-stream

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What is it

You have an .ipa file — an iOS application package. Every app on your iPhone arrived as an IPA through the App Store, but Apple doesn't let you see, save, or sideload them on standard iOS devices. IPA files are visible primarily in enterprise deployment, TestFlight beta testing, and developer workflows.

An IPA is technically a ZIP archive containing the compiled app binary, resources, assets, and code signature. Apple's code-signing requirements mean that an IPA only runs on devices that trust the signing certificate — App Store certificates (for public apps), enterprise certificates (for internal corporate apps), or development certificates (for testing). This locked-down approach is Apple's security model for iOS.

Standard iOS devices install apps only through the App Store or TestFlight. Apple Configurator (macOS) can install IPA files on managed devices. Developers use Xcode to build and deploy IPA files during development. Sideloading on standard iOS is not supported — and third-party signing services carry real security and account risks.

Technical details
Full Name
iOS App Store Package
MIME Type
application/octet-stream
Developer
Apple
Magic Bytes
50 4B 03 04
Safety
.ipa requires caution. IPA files cannot be sideloaded on standard iOS devices. Enterprise or developer-signed IPAs from untrusted sources may compromise device security.
What opens it
iOS (via App Store / TestFlight)
FREE iOS
Apple Configurator
FREE macOS
FAQ
Can I install an IPA file on my iPhone?
Not easily. Standard iOS only installs apps through the App Store or TestFlight. Developers can install via Xcode with a development certificate. Enterprise certificates allow internal distribution. Third-party sideloading tools exist but risk account bans and security issues.
What's inside an IPA file?
Rename .ipa to .zip and extract it. Inside you'll find a Payload folder containing the .app bundle — compiled binary, resources, assets, Info.plist (metadata), and code signature. You can't run the app this way, but you can inspect its contents.
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