Short answer
A 4.3 rejection means Apple sees your app as a copy: several near-identical apps under different Bundle IDs (4.3(a)), or an app indistinguishable from what’s already widely available (4.3(b)). The fix is usually a product change, such as merging the copies into one app, or making the app meaningfully different, not a code fix.
The two parts of 4.3, and what to change
01
Several copies of the same app
“Don’t create multiple Bundle IDs of the same app” Apple, Guideline 4.3(a)
White-label apps, one app per client, city or location, and apps built from the same template as other developers’ apps all fall here. Developers on Apple’s forums report the message says the app shares a similar binary, metadata or concept with other apps. Apple’s 4.3(a) suggests one app with the variations provided through in-app purchase. For apps built for clients from a template, Guideline 4.2.6 (under Minimum Functionality) says they’re rejected unless the provider of the app’s content submits them, and names one app that hosts every client’s content, a “picker” model, as another acceptable option.
02
An app too close to what’s already there
“Don’t submit apps that are indistinguishable from what's already widely available.” Apple, Guideline 4.3(b)
Apple gives examples of kinds of apps, such as dating, flashlight, wallpaper and simple timer apps, that are so well established it won’t accept new ones unless they offer a meaningfully different or improved experience. Developers report that changing the colors, name or icon rarely counts. What does is a feature or audience the existing apps don’t serve, shown clearly in the screenshots and the review notes.
03
Explaining it in your reply or appeal
If the app really is different, say how in your reply in App Store Connect: who it’s for, what it does that similar apps don’t, and whether it’s one app per business or one app for many. Developers report that renaming or restyling alone rarely changes the outcome, so lead with the product difference.
Checked against the vendor’s docs on : Apple: App Review Guidelines, 4.3 Spam (last updated October 16, 2026); Apple: App Review Guidelines, 4.2.6 (template and app generation services); Apple: App Review (replying and appeals); Apple Developer Forums: Guideline 4.3(a) rejection threads.
Rather hand it over?
Start with a paid consultation to agree what to change, then get a written quote with a fixed price.
- $100 per 15 minutesPaid consultationGo through the rejection and the app with Simon and agree what to change.Book a consultation
- Written quoteDescribe the change, such as merging several apps into one, and get a fixed price and timeline in writing; we reply by email, usually within one business day.Describe your project
Related: App Store Guideline 2.1 · App Store Guideline 5.1.1