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TROME

Reuse the App IDs that your Mac already has

A free Apple ID can register 10 App IDs in 7 days, and TROME uses 2 for each new name (what an App ID is). When Xcode says Your maximum App ID limit has been reached or No profiles for … were found, you have two ways out: wait until a place frees up, or install TROME under two App IDs that your Apple ID registered before. This page shows the second way, which works the same day.

You need the Mac where Xcode registered those App IDs, with the folder ~/trome as the install made it. Each App ID expires 7 days after Xcode registered it, so the list below tells you which ones you can still use.

  1. In Terminal, list the App IDs that Xcode registered on this Mac, with the date (UTC) when each one expires:

    Fenêtre de terminal
    for f in ~/Library/Developer/Xcode/UserData/Provisioning\ Profiles/*.mobileprovision; do
      security cms -D -i "$f" | plutil -extract ExpirationDate raw -o - - | tr '\n' ' '
      security cms -D -i "$f" | plutil -extract Entitlements.application-identifier raw -o - - | sed 's/^[A-Z0-9]*\.//'
    done | sort

    It shows one line for each App ID, with no Team ID:

    2026-10-04T08:27:57Z io.github.janedoe.oldapp

    Older versions of Xcode keep these files in this folder instead:

    ~/Library/MobileDevice/Provisioning\ Profiles

    When the command shows an error, write this folder in place of the folder of its first line.

  2. Choose two IDs of the list whose date has not passed: one for the app, and one for its lock screen part. The ID of the lock screen part must start with the ID of the app and a dot, for example io.github.janedoe.oldapp and io.github.janedoe.oldapp.Widget, because iOS refuses a lock screen part whose ID does not start with the ID of its app. The easiest pair is the one of an earlier install of TROME: its two IDs end in .trome.dev and .trome.dev.widget.

  3. Quit Xcode with Cmd + Q. In Terminal, open your settings file:

    Fenêtre de terminal
    cd ~/trome
    open -e ios/Config/Local.xcconfig

  4. Add these two lines with your two IDs, written exactly as the list shows them, capitals included. Then save (Cmd + S) and close the file.

    TROME_DEBUG_APP_BUNDLE_ID = io.github.janedoe.oldapp
    TROME_DEBUG_WIDGET_BUNDLE_ID = io.github.janedoe.oldapp.Widget

  5. In Terminal, create the project again:

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    make generate

    Its last line shows the two IDs that Xcode will use:

    Debug bundle IDs: app io.github.janedoe.oldapp, Live Activity io.github.janedoe.oldapp.Widget

    Do not click Run before this line shows your two IDs exactly. Xcode ignores a line with a wrong setting name and says nothing, and then it registers a new ID. When an ID is not the one that you wrote, check the setting name at the start of its line, fix the file, save it, and run make generate again. When the command says FAILED and names the Debug ID of the extension, your two IDs do not go together: choose them again, so that the lock screen part starts with the app ID and a dot.

  6. Open the project, choose the scheme TROME and your iPhone, and click Run:

    Fenêtre de terminal
    open ios/TROME.xcodeproj

    The app opens on the iPhone, and it replaces an older app with the same ID.

  7. Run the command that lists the App IDs again. The latest date shown for the ID of your app is the day when the app stops opening.

When an ID of your two lines has expired by the time you click Run, Xcode registers it again, and it takes a place again. To go back to the usual names, remove the two lines from your settings file and run make generate again.