Apple App Store应用替换技术咨询：Swift旧应用换React Native新应用

Absolutely—Apple does allow you to completely swap out your existing app's Swift/Xcode codebase for a React Native version, as long as you stick to their core submission rules and guidelines. Here’s what you need to keep in mind to make the process smooth:

• Keep your Bundle ID identical: This is non-negotiable. The Bundle ID is how Apple identifies your app as the same listing in the App Store. Changing it would create an entirely new app, not an update to your existing one.
• Increment your version/build number: You can’t reuse a version or build number that’s already been submitted or approved. If your last live version was 1.8.0, your React Native update needs to be something like 1.9.0 or 2.0.0.
• Stay compliant with App Store Review Guidelines: Your React Native app has to follow all the same rules as any native app. That means no hidden functionality, proper handling of user privacy (like requesting permissions correctly), no crashes, and ensuring it works as advertised across your target iOS versions.
• Plan for user data migration (if applicable): If your old app stores user data (local storage, Core Data, etc.), make sure your React Native rewrite can access or migrate that data seamlessly. Losing user data after an update will lead to negative reviews and could even trigger a review flag if users report it.
• Note the rewrite in your submission: When you upload the new build to App Store Connect, add a quick note in the "Review Notes" section explaining that this is a full rewrite using React Native. It helps the review team understand the scope of the update and avoids any confusion about sudden changes in the app’s code structure.

I’ve seen dozens of developers do this successfully—from small indie apps to larger enterprise tools. As long as your new app meets Apple’s standards, the rewrite itself won’t be a barrier to approval.

内容的提问来源于stack exchange，提问作者Roman Šimr