App Icon Maker: Generating All Required Sizes from One Source
Modern apps need icons in dozens of sizes β iOS, Android, Windows, web manifests, app stores. Generating each one by hand is tedious and error-prone. An icon maker takes one square source and outputs every required size with proper naming.
App icons appear at different sizes on different devices and contexts: iOS Settings (29Γ29), iPhone home screen (120Γ120), iPad Pro home screen (167Γ167), App Store (1024Γ1024), Android (48 to 192), and so on. Apple's full asset catalog has 14+ size variants alone.
An icon maker takes one high-resolution square source β typically 1024Γ1024 β and resamples it to every required size, producing a folder structure that drops directly into Xcode or Android Studio.
Design tips for app icons
- β’Start with a 1024Γ1024 source. Apple's App Store requires this exact size for submission.
- β’Use a flat color palette with 2β3 colors β busy icons look noisy at small sizes.
- β’iOS rounds corners automatically β design a square; let iOS apply the corner radius.
- β’Avoid text, especially small text. Logos work better than wordmarks at app-icon sizes.
- β’Test at 60Γ60 (iPhone home screen size) β if it's unrecognizable, simplify.
Extended FAQ
What's the difference between iOS and Android icons?
iOS uses square icons that the system rounds. Android can use square or non-square 'adaptive icons' that the launcher composes with a background. EllyTools generates both formats.
Do I need 1024Γ1024 specifically?
Yes for App Store submission. For everything else, any high-resolution square works β but 1024 is the safest starting size.
Are my icons stored?
No. Your artwork is resized to every required icon size in the browser, and the ZIP is built there too.