Install IPA on iPhone
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Install guide

Install IPA files with Feather (open source)

Feather is an open-source, ad-free IPA signer for people who already have a personal certificate. Install Feather and sign IPA files right on your iPhone.

Updated 9 October 2026

At a glance

iOS version
16.0 and later
Cost
Paid yearly
Certificate
Personal certificate
Developer Mode
Depends on certificate
Computer needed?
No
Lifetime
Until the certificate is revoked
Risk
Low
Time
about 20 min

Source code (opens in a new tab) Open source

Feather is an open-source IPA signing app: no ads, no data collection. KSign itself is built on Feather. The difference: Feather ships with no certificate, so you must bring your own.

What you need

  • A personal certificate: .p12, .mobileprovision and its password. See what certificates are.
  • A way to install Feather itself, such as KSign or a pre-signed link from your certificate seller.

Installation steps

  1. Download Feather from the official source

    Get the latest Feather .ipa from its GitHub releases page:

    https://github.com/khcrysalis/Feather/releases

  2. Install Feather

    Sign and install the downloaded Feather file with KSign, using your own certificate. You can also ask your certificate seller to pre-sign Feather for you.

    The Feather app on the Home Screen Tap to view full size

  3. Allow Feather to run

    With a personal UDID certificate, turn on Developer Mode. With an enterprise certificate, trust the app.

  4. Import your certificate

    In Feather, open Settings, choose Certificates and tap +. Pick the .p12 and .mobileprovision, then enter the password.

    Certificate import screen in Feather Tap to view full size

  5. Import an IPA

    Open the Library tab and tap +. Import from the Files app, or paste a download link for the IPA.

    Feather's library with an imported app Tap to view full size

  6. Sign and install

    Tap the app, choose Sign, then Install. If Feather asks how to install, keep the default mode. The idevice mode needs a pairing file made on a computer, and you don’t need it.

    Feather's signing screen Tap to view full size

See more common problems.