Hello! Yes, most app builders should be able to help you create a mockup for your mobile application. App builders typically offer a user-friendly interface with drag-and-drop features that allow you to design your app's layout, add buttons, images, text, and other elements to create a visual representation of your mobile application.
You can start by selecting a suitable app builder based on your requirements and design preferences. Some popular app builders include Appy Pie, BuildFire, AppMakr, and GoodBarber. These platforms offer various customization options and templates to help you create a professional-looking mockup for your mobile application.
Feel free to explore different app builders to find one that best suits your needs and design capabilities. If you have any specific questions or need further assistance on using an app builder for creating a mockup, please let me know. Good luck with your mobile application development!