Sleek: AI Mobile App Designer

Hiring a freelance designer just to see whether an app idea holds up is slow and costs real money. Sleek is an AI mobile app designer that generates app mockups in minutes, so founders and developers without design skills can get screens in front of users quickly.

The main promise is testing ideas in days instead of months.

Sleek produces professional-looking screens for both iOS and Android, and it starts from pre-built templates you can customize.

You keep full control over the design process rather than accepting one fixed result.

When a mockup is ready, you can export it to Figma or to code and carry on with development there.

As an AI mockup generator, Sleek is cheaper than paying a freelance designer for the same early-stage work.

It fits best at the start of a project, when you want something tangible to show people before committing to a full build.

Sleek sits in the coding and development category, and its Figma export is useful if a designer joins later.