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What is Bundle ID?

Definition, examples, and more

Definition

A unique identifier assigned to an app by its developer, used primarily in iOS/macOS ecosystems. The bundle ID ensures proper linking between app store listings, analytics platforms, and third-party services like push notifications, attribution, and entitlement management.

Example

A meditation app uses the bundle ID ‘com.zenflow.meditation’ for its iOS app. This same identifier is configured in Botsi for entitlement management, AppsFlyer for attribution, and Firebase for analytics — ensuring all systems reference the same app and user data stays connected.

Why Bundle ID Matters

A misconfigured bundle ID can break your entire subscription infrastructure. A fitness app accidentally created a new bundle ID during an app rebuild and lost connection to 15,000 existing subscribers’ purchase histories. Users could not restore purchases, support tickets spiked 400%, and the app lost its 4.7 star rating within a week. Always double-check your bundle ID when setting up new services or rebuilding your app.

Frequently Asked Questions

Can I change my app’s bundle ID after launch?

Technically you can create a new app with a different bundle ID, but it is treated as a completely new app — losing all reviews, ratings, download history, and existing subscriptions. In practice, you should never change your bundle ID. If you need a fresh start, plan carefully for subscriber migration.

What format should a bundle ID follow?

Bundle IDs use reverse domain name notation: com.companyname.appname (e.g., com.botsi.app). They must contain only alphanumeric characters, hyphens, and periods. Each component must start with a letter. Keep it clean and consistent — you will be typing it into dozens of service configurations.

Is a bundle ID the same as a package name on Android?

They serve the same purpose (uniquely identifying your app) but are separate identifiers. Your iOS bundle ID (e.g., com.myapp.fitness) and your Android package name (e.g., com.myapp.fitness) can be identical, and it is common practice to keep them the same for simplicity. Tools like Botsi map both to a single project.

Category
Subscription App Terminology
Related Area
Mobile App Growth & Monetization

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