Guideline 4.2 - Design: Insufficient Functionality or Single-Screen App

Apple is rejecting your app because it does not provide enough functionality to qualify as a standalone app. This variant of 4.2 targets apps that are too simple — single-screen utilities, apps that perform one trivial function, or apps with so little content that they feel like a feature rather than a product. Examples that commonly trigger this: a tip calculator with no additional features, a flashlight app with one button, a single-recipe cooking app, a quote-of-the-day app with no interaction, or a countdown timer to a single event. Apple's bar is that the app should provide 'a useful, unique, and lasting experience' — meaning it should have enough depth that users would want to keep it installed. This rejection is sometimes subjective and can vary between reviewers. An app rejected by one reviewer for insufficient functionality might have been approved by another. However, if you've received this rejection, the most reliable path forward is to add meaningful features rather than appeal. The fastest compliant path is to identify 2-3 additional features that logically complement your app's core function and implement them. Think: customization options, history/saved items, sharing capabilities, widgets, or settings. The goal is to demonstrate that your app offers a complete experience, not just a single interaction.