IOS – How apps are organised in developer page in the App Store

Yes - all your apps will be removed from their respective App Stores if your developer program membership expires.

If your Apple Developer Program membership expires, you will still have access to iTunes Connect. However, your apps will no longer be available for download on the App Store and you will not be able to submit new apps or updates.

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Attempting to log in to iTunes Connect will show the following message, but all of the services are still accessible.

1. Release your app in the App Store with the old account.
2. The minute it is released (you can specify the date), you change the status to 'Developer Rejected'
3. Transfer your app to the new account.

From Apple Developer documentation:

Before you transfer an app to another developer, ensure you’ve met the following criteria:

• Make sure your accounts aren’t in a pending or changing state.
• Make sure the app uses only technology and content that can be transferred.
• No version of the app can use an iCloud entitlement.
• No version of the app can use a Passbook entitlement.
• The app can’t offer (or have previously offered) in-app purchase subscriptions: auto-renewable, free, or non-renewing.
• The App must have had at least one version that has been released to the App Store.

Make sure the app and any in-app purchase products it offers have a status that supports transfers. The app status can be one of the following:

• Ready for Sale
• Prepare for Submission
• Developer Removed From Sale
• Invalid Binary
• Developer Rejected
• Rejected