Configure Signing for Your App

With your App Store Connect integration set up, the next step is to enable signing for each app in your Median organization. This ensures the app is built with the correct credentials for App Store Connect upload, TestFlight testing, App Store submission, or direct installation on registered devices.

All iOS signing configuration lives in one place: the iOS IPA Build Configuration panel in Median App Studio. This article walks through each section of that panel, in order.

The panel has a top-level Automatic (API) / Manual toggle. Automatic (API) is the recommended path for most apps and is covered first below; Manual is covered in Option 2.

Option 1 - Automatic Provisioning

Section 1: Apple Developer API Connection

If you completed Connecting Median with App Store Connect, this section already shows a Connected badge along with your Issuer ID, Key ID, and private key filename. If not, complete that article before continuing.

Section 2: Bundle ID & App Store Connect App

This section ensures your app's Bundle ID is registered with Apple and that a matching app record exists in App Store Connect. Both are required before Median can generate a provisioning profile.

The Bundle ID your app requires (generated from your Median app) is shown at the top of this section. You can also learn more about the Bundle ID in our App Identifiers article.

Register the Bundle ID

Automatically

Click Register Bundle ID Automatically to have Median register this Bundle ID with your Apple Developer account, including the capabilities your app needs (for example, Push Notifications, Associated Domains, or Sign in with Apple).

Manually

If you'd rather register it yourself: sign in to your Apple Developer account, open Identifiers, click the + button, choose App IDs → App, enter the Bundle ID shown above, and enable the capabilities your app requires.

If you manually register your app, Median cannot create the app record on your behalf.

Sign in to App Store Connect, go to the Apps tab, click the + button, and fill in the required details, selecting the Bundle ID from Step 1 when prompted.

Section 3: Signing & Upload Settings

This section helps you configure the right signing profile for your app.

Option 2 - Upload your own signing assets (Manual tab)

If you'd rather not connect an App Store Connect API key or are unable to due to organizational or security policy, switch the top-level toggle to Manual and provide your own signing assets directly.

This form will allow you to manually create and upload your own distribution certificate and provisioning profile.

To upload your own assets:

1. Create a distribution certificate and a provisioning profile using Apple’s Developer Portal and download the resulting .cer file.
2. You will need a .p12 file of your certificate, not just the .cer file provided by Apple. This step must be done on a Mac, and involves exporting the certificate from Keychain Access.
3. Open your app in App Studio.
4. Navigate to Build & Deploy, click Configure in the iOS IPA section, and upload the .p12 file (with its password) and the provisioning profile in the Manual tab.

If you encounter issues generating these assets, we encourage you to post your question in our online discussion forum where the Median team and community are always willing to help.

Next Step

Return to the Building an iOS Binary overview to start your build, or continue on to Install iOS IPA once your build finishes.