Apple customers place a high value on products that are simple, refined, innovative, and easy to use, and that's what we want to see on the App Store. Coming up with a great design is up to you, but the following are minimum standards for approval to the App Store.
4.1 Copycats
4.10 Monetizing Built-In Capabilities
4.2 Minimum Functionality
4.2.1 Apps using ARKit should provide rich AR experiences
4.2.2 Apps should not primarily be marketing materials or web clippings
4.2.3 App self-containment and resource download disclosure
4.2.6 Apps created from commercialized template or app generation service
4.2.7 Remote Desktop Clients
4.3 Spam
4.4 Extensions
4.4.1 Keyboard extensions additional rules
4.4.2 Safari extensions
4.5 Apple Sites and Services
4.5.1 Apple RSS feeds usage
4.5.2 Apple Music
4.5.3 Do not use Apple Services to spam, phish, or send unsolicited messages
4.5.4 Push Notifications requirements
4.5.5 Game Center Player IDs
4.5.6 Apple emoji usage
4.7 Mini apps, mini games, streaming games, chatbots, plug-ins, and game emulators
4.7.1 Software offered in apps must meet specific requirements
4.7.2 App may not extend or expose native platform APIs without permission
4.7.3 App may not share data or privacy permissions without explicit consent
4.7.4 Must provide index of software and metadata with universal links
4.7.5 Must provide age restriction mechanism for software exceeding app age rating
4.8 Login Services
4.9 Apple Pay