iOS App Icon Size: What Apple Actually Requires in 2026

• •One image: 1024 x 1024 pixels
• •Format: PNG or JPEG (PNG required if you want quality)
• •Color space: RGB (no CMYK)
• •No transparency/alpha channel: the icon must be fully opaque
• •No rounded corners: Apple applies the rounded corners (superellipse mask) automatically. Do not add them yourself.
• •Square: the image must be perfectly square (1:1 aspect ratio)

You upload this single 1024x1024 image in App Store Connect. Apple automatically generates all other sizes needed for different contexts (Home screen, Settings, App Store, notifications, etc.).

This is a significant simplification from earlier iOS versions, where you needed to provide multiple icon sizes in an asset catalog. Xcode still uses an asset catalog for the app binary, but for App Store Connect submission, only the 1024x1024 image is required.

1. 1.Transparency: if your PNG has an alpha channel with transparent areas, Apple rejects it. The entire icon must be opaque. Fix: flatten your image onto a solid background color before exporting.

1. 2.Rounded corners: if you pre-round the corners of your icon, Apple rejects it. Apple applies the superellipse mask automatically. Your icon should fill the entire 1024x1024 square. Fix: export your icon as a full square.

1. 3.Wrong size: if your icon is not exactly 1024x1024px, Apple rejects it. Fix: resize in your image editor, ensuring the canvas is exactly 1024x1024.

1. 4.Inappropriate content: icons with violence, adult content, or misleading imagery are rejected. Apple's guidelines apply to icons just as they do to screenshots.

1. 5.Text readability: if your icon contains text that's too small to read at Home screen size (60x60px), Apple may flag it. Fix: keep icon text minimal and large.

1. 6.Misleading icons: if your icon implies functionality the app doesn't have (e.g., a phone icon for a non-calling app), Apple may reject it.

• •Keep it simple: icons are viewed at 60x60px on the Home screen. Complex designs become unrecognizable at small sizes. One central element works best.

• •Use bold colors: high contrast and saturated colors stand out on the Home screen. Avoid light-on-light or dark-on-dark combinations.

• •Avoid text: text is hard to read at 60x60px. If you must use text, use 1-3 characters maximum, in a bold, simple font.

• •Be unique: your icon should be distinguishable from other apps in your category. Don't use generic shapes or colors that blend in.

• •Test at multiple sizes: view your icon at 1024px, 180px (App Store), 120px (Settings), and 60px (Home screen). If it works at 60px, it works everywhere.

• •Consider dark mode: your icon appears on both light and dark Home screens. Test your icon on both backgrounds.

• •Use the full canvas: don't leave large margins. Your central element should fill most of the 1024x1024 canvas (Apple's mask will handle the edges).

• •Be consistent with your brand: your icon should match your app's color scheme and visual language. Consistency between icon, screenshots, and app UI builds trust.

1. 1.In Xcode, open Assets.xcassets
2. 2.Find or create the AppIcon asset
3. 3.Drag your 1024x1024 PNG into the 'iOS App Icon' slot (or the single-size slot if using the latest Xcode)
4. 4.Xcode automatically generates all required sizes for the app binary

In modern Xcode (14+), you only need to provide the single 1024x1024 image in the asset catalog too. Xcode handles all the resizing. In older Xcode versions, you needed to provide multiple sizes (40x40, 60x60, 76x76, 83.5x83.5, 1024x1024, etc.), but this is no longer necessary.

If you're using a cross-platform framework (Flutter, React Native, etc.), the process is similar: provide the 1024x1024 image and the framework handles the rest.

• •Transparency in PNG: the #1 rejection cause. Always flatten to a solid background.
• •Pre-rounded corners: the #2 rejection cause. Apple rounds automatically; don't do it yourself.
• •Too much detail: icons that look great at 1024px but are unrecognizable at 60px. Simplify.
• •Text-heavy icons: text becomes unreadable at small sizes. Use 1-3 characters max.
• •Copying another app's icon: Apple rejects icons that closely mimic other apps.
• •Using Apple's logos or UI: Apple's guidelines prohibit using Apple trademarks, logos, or UI elements in your icon.
• •Inconsistent with screenshots: if your icon is blue but your screenshots are green, users may not recognize the connection. Keep branding consistent.
• •Not testing on dark mode: an icon that looks great on a light background may disappear on a dark one.
• •Using a photo: photos rarely work as icons. They're too complex and don't scale down well. Use illustrations or simple graphics.
• •Ignoring the superellipse: Apple's mask is a superellipse (squircle), not a standard rounded rectangle. Elements too close to the corners may get clipped. Keep important elements within the central 80% of the canvas.

1. 1.Create 2-3 icon variants
2. 2.Set up a PPO test in App Store Connect
3. 3.Apple splits traffic between your original and variants
4. 4.See which icon drives higher conversion (tap-through rate from search results and install rate)

What to test:

• •Color schemes: try different primary colors
• •Background vs. no background: filled background vs. transparent-style (still opaque, just designed to blend)
• •Text vs. no text: does adding your app's initial help or hurt?
• •Simple vs. complex: does a simpler design convert better?
• •Realistic vs. abstract: for some categories (games), realistic icons work; for others (productivity), abstract is better.

Icon tests can produce surprising results. An icon you think looks better may convert worse. Always test with real users, not just your own opinion.