What this checks
We look up three common patterns for your name, com.name.app, app.name and com.name, on both the App Store and Google Play, and tell you which are used by a published app.
Why bundle IDs matter
- Your iOS bundle ID and Android package name identify your app forever. Once you upload a build, neither can change.
- Each must be unique: no two apps on the same store can share one.
- Users rarely see them, so they don’t need to match your brand exactly. Use a reverse domain you own, like com.yourcompany.appname, and you’ll never collide with anyone.