Impactor Sideloading Guide (2026): Install IPAs, SideStore and Pairing Files

ByScarlet iOS Team Updated on

Impactor is a free, open-source app for Mac, Windows and Linux that signs IPA files with your own Apple Account and installs them on your iPhone or iPad. It used to be called PlumeImpactor, and it is the tool many guides now point to for installing SideStore and LiveContainer or for making the pairing file those apps need. This guide covers what Impactor does, how it works, how to install an app with it and where its limits are. Last checked: 2 November 2026, against the project’s own GitHub page (version 2.7.2, released 24 October 2026).

The Short Version

  • Impactor runs on macOS, Windows and Linux and sideloads apps to iOS 9.0 and later with your Apple Account, the same way Xcode would.
  • With a free Apple Account, apps last 7 days and you can only have a few at once. A paid Apple Developer Program membership removes those limits.
  • It installs SideStore and LiveContainer, and it can create the pairing file that SideStore, Feather, KSign, StikDebug and other apps use.
  • It is open source under the MIT license. Download it only from its GitHub releases page, Flathub or Homebrew.
  • It is not Cydia Impactor, the older tool that stopped working years ago.

What Impactor Is (and Is Not)

Impactor is made by the developer known as claration, who also makes the on-device signer Feather. The project describes it as a “cross-platform & feature rich iOS/iPadOS/tvOS sideloading application” and says it was “formerly known as PlumeImpactor”. It had about 3,700 stars on GitHub in early November 2026 and gets regular releases.

The name can be confusing. Cydia Impactor was a different desktop tool, made by another developer, that was widely used to sideload IPA files until about 2019. Our Scarlet iOS vs Cydia Impactor post covers that older tool. The Impactor in this guide is a separate, current project.

How Impactor Works

The project explains that it replicates “what Xcode would do” using your Apple Account. When you sideload an app, Impactor:

  1. registers your iPhone or iPad with Apple under your account,
  2. creates a development certificate (these last 365 days; Impactor keeps the key on your computer, so on another computer it will make a new one unless you copy the key over),
  3. registers the app and creates a provisioning profile with the entitlements the app asks for,
  4. applies any changes you chose (name, tweaks and so on), signs the app and installs it on your device.

Because Apple issues the certificate to you, other people’s use cannot get it revoked. The catch is Apple’s limits for free accounts. The project puts it plainly: “without paying for their developer program you are limited to 7-days and a limited amount of apps/components you can register.” In practice that means 3 active sideloaded apps per device and a weekly refresh; see the free Apple ID 3-app limit and what to do when an app expires after 7 days.

What You Need

Computer Download Extra requirement
macOS Universal .dmg from GitHub, or brew install --cask impactor None
Windows (x86, x64, ARM64) Installer or portable .exe from GitHub iTunes from Apple, for the device drivers
Linux (x86_64, aarch64) AppImage from GitHub, or Flathub usbmuxd (included in most distributions)

You also need a USB cable, an Apple Account and the IPA file you want to install. The releases also include a command-line tool, plumesign, for advanced users.

How to Install an App With Impactor

  1. Download Impactor for your computer from the project’s GitHub releases page (or Flathub/Homebrew). On Windows, install iTunes first.
  2. Open Impactor and sign in with your Apple Account.
  3. Connect your iPhone with a cable, unlock it and tap Trust if it asks whether to trust the computer.
  4. Add the IPA you want to install, change any options you need, and start the install.
  5. On iOS 16 and later, apps signed with your own account need Developer Mode turned on. If iOS asks, trust your developer certificate in Settings > General > VPN & Device Management (see fix the Untrusted Developer error).

For SideStore and LiveContainer, Impactor has built-in support: its Utilities page, shown when a device is connected, can install them and place their pairing file. The same page can re-trust the device or put a pairing file into a supported app.

Pairing Files, Explained

Some iPhone apps talk to the phone’s own system services, for example to install apps or turn on JIT. They need a pairing file, which normally comes from a computer the phone trusts. Impactor can generate one. The project notes the file is device-specific and “will become invalid if you ever re-trust/update/reset”, so you may need a new one after an iOS update.

Apps the project lists as supported include SideStore, LiveContainer with SideStore, Feather, KSign, StikDebug, Antrag, Protokolle, SparseBox, EnsWilde, ByeTunes and Reynard Browser.

Other Features

  • Tweaks: injects .deb and .dylib files with ElleKit, and can add .framework, .bundle and .appex folders. It can also swap Cydia Substrate for ElleKit “for 26.0 compatibility”.
  • Certificates for other apps: generates a P12 for SideStore and AltStore to use, “similar to AltServer”, and exports a P12 for LiveContainer.
  • Entitlements: can request entitlements such as increased-memory-limit, which emulators like MeloNX and UTM need. Our Switch emulator guide walks through that for MeloNX.
  • Auto-refresh: on macOS and Windows it can refresh apps automatically. On Linux it only does so while the device is plugged in.
  • Other installs: supports AppSync and IPAs downloaded with ipatool (and then turns off App Store updates for them).

Impactor vs Other Ways to Sideload

  • Sideloadly does the same basic job from Windows or Mac with your Apple Account, but it is closed source and has no Linux version.
  • SideStore runs on the iPhone and refreshes apps without a computer once it is set up. Impactor is one of the ways to do that first setup.
  • Feather signs on the device with your own developer certificate; Impactor can make its pairing file.
  • Scarlet iOS needs no computer and no Apple Account, because it provides the certificate. That certificate is shared, so Apple can revoke it. Impactor apps use your own certificate but, on a free account, last 7 days. Our free sideloading tools compared guide puts them side by side. To try Scarlet, see how to install Scarlet iOS or start from our Scarlet iOS install page.

Is Impactor Safe?

The code is public under the MIT license, and there are official downloads on GitHub, Flathub and Homebrew. Re-uploads on other sites cannot be checked, so avoid them. Keep in mind that you sign in to Impactor with your Apple Account, which is how it gets certificates from Apple. Only use a build from the official sources, and check any IPA you install with it.

FAQ

Is Impactor the same as PlumeImpactor?
Yes. The project says it was formerly known as PlumeImpactor; some guides still use the old name.

Is it the same as Cydia Impactor?
No. Cydia Impactor was an older, unrelated tool that stopped working around 2019.

Do I need a paid developer account?
No. A free Apple Account works, with Apple’s 7-day and app limits. A paid membership removes those limits.

Does it work without a computer?
No. Impactor is a computer app. For installing without a computer, see ways to install apps outside the App Store.

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