If you need an AI tool to create custom app icons, Iconify AI is a great option. The tool creates unique, professional-looking app icons in seconds, with 11 styles to choose from and an automated color palette generation. It produces high-resolution icons in 1024x1024 HD and grants full rights for commercial use. The pricing is by the credit, so you can pay as you go and get a good price for a large number of icons.
Another option is Icon Generator. It can generate professional-looking icons and logos quickly, with a large library of graphics and assets. It offers a variety of styles, including Imagine, 3D and Isometric, and can generate an automated color palette. The interface is easy to use and payment processing is secure, so it's good for rapid icon iteration and commercial use.
If you're on a budget and need something more scalable, IconKit offers high-quality, customizable icons in less than a minute. The interface is easy to use, and it's designed for businesses, side projects and Discord servers, with lifetime credits and commercial use rights. It's a good option if you need to create a lot of premium icons.
If you want a more complete design kit, Icons8 has a lot of tools and assets, including a large library of icons and an Iconizer tool for editing SVG icons. It also has AI tools like the Human Generator, Face Generator and Smart Upscaler. It's geared for developers who need to ensure a consistent look across their projects.