An IPA file (iOS App Store Package) is the app format used for iPhone and iPad. It’s like a .exe or .dmg for iOS: a single file that contains the app code, assets, and metadata. You can install IPA files on your device using sideloading tools such as iLoader and SideStore—no App Store required.
What’s Inside an IPA?
An IPA is actually a ZIP archive. Inside you’ll typically find:
- App binary — The main executable.
- Resources — Icons, images, and other assets.
- Info.plist — App name, bundle ID, version, permissions.
- Frameworks and libraries — Code the app depends on.
You don’t need to open or edit the IPA yourself to install it; tools like iLoader handle that.
Where Do IPA Files Come From?
- App Store downloads — Normally you don’t get IPAs from the App Store; you install through the store app.
- Developer builds — Developers can export IPAs from Xcode for testing or distribution.
- Third-party projects — Open-source or modified apps (e.g. uYou+, Delta) are often distributed as IPAs.
- Backups — Some tools extract IPAs from installed apps (for personal use).
Only install IPAs from sources you trust. See Best IPA Sources 2026 and iOS Sideloading Security for safety tips.
How to Install an IPA on Your iPhone
- Get the .ipa file on your computer (download from a trusted source).
- Install iLoader and set up SideStore if you haven’t already (see Getting Started).
- Connect your iPhone via USB, open iLoader, and use the option to Install IPA or Sideload IPA.
- Select the .ipa file and wait for the install to finish.
- If prompted, trust the developer in Settings → General → VPN & Device Management.
Full steps: How to Install IPA on iPhone.
IPA vs App Store
Installing an IPA yourself is called sideloading. The app isn’t coming from the App Store but from a file you provide. You still need an Apple ID (free developer account) to sign the app so iOS will run it. With a free account, the app typically expires after about 7 days unless you refresh it (e.g. with SideStore).