# iOS App Icon Prompt for GPT-4o

> A structured prompt for generating spec-compliant iOS app icons with GPT-4o

A concise prompt template created by Evan Bacon for generating production-ready iOS app icons using GPT-4o. It specifies Apple design guidelines such as square dimensions, color spaces, safe zones, and style constraints to avoid common AI generation issues like unwanted rounded corners. It works as a one-shot prompt alongside an optional reference image.

## The prompt

Create an iOS app icon based on this image.

- Icon should fill the entire image. Apply no icon mask or border radius.

- Use vibrant Display P3 colors.

- Image should be square 1024x1024 with no transparency.

- Respect the golden ratio (1:1.618). Essential content (logos, visuals) should be within ~80%-85% of the icon's width/height.

- Embrace simplicity. Prefer a simple background that puts the emphasis on the primary image.

- Prefer vector graphics over photos or screenshots, which lose clarity at small sizes.

The image input can be replaced with any subject; the example in the tweet uses an astronaut photo over Earth and produces a flat vector astronaut icon on a blue background.

## What it is for

- Generate iOS app icons from reference sketches or photos in one attempt
- Ensure AI image models do not bake rounded corner masks into icon exports
- Draft app store visual assets that adhere to Apple design guidelines and safe zones

## Key points

- Instructs the model to output a square 1024x1024 image with no transparency
- Explicitly forbids baking in icon masks or border radiuses
- Enforces Display P3 vibrant color usage
- Defines an 80%-85% safe zone based on golden ratio proportions
- Directs the output toward simplified vector styles rather than photographic detail

## Pricing

Free

## Details

- Type: Prompt
- Category: [Design](https://xiry.app/topics/design.md)
- Topic: [AI Prompts](https://xiry.app/topics/ai/ai-prompts.md)
- Open source: no
- Platforms: Web, other
- For: iOS developers, indie hackers, and app designers
- Tags: prompts, ios, app icon, gpt 4o, design

## Why it was saved

- [@Baconbrix, 11 April 2025](https://x.com/Baconbrix/status/1910752770593816703): Proven prompt by Evan Bacon for generating polished, spec-compliant iOS app icons from GPT 4o.

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Updated 11 October 2026. Page: https://xiry.app/resources/ios-app-icon-prompt-for-gpt-4o

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