For the foreseeable future, at the very least, all MacBooks will come with a notch. However, if you’re building an app on a desktop Mac, you won’t be able to see how it interacts with the notch and how everything will look on a laptop.

Notched Up allows you to test your apps with a simulated notch, and it can even be useful if you’re curious how distracting the notch is before going out and buying a MacBook.

The app creates a simulated notch based on your display’s dimensions, so that it always appears in the middle. It’s very realistic, even including a fake camera to make it look believable.

You can disable the notch at any time from the main app window, which is brought up by double-clicking the notch. You can also choose if it should be displayed in all spaces or full screen apps.

Notched Up comes with presets for all MacBook screen sizes. You can switch between them to see where the notch will be displayed in relation to the app’s menus, which can help you avoid overlaps.

If the monitor you want to test isn’t on the list, you can define its dimensions manually. You can set the panel width and height, allowing the application to determine the notch position.

When multiple monitors are connected, you can simply drag the notch to any other screen to see how it will look.

Notched Up is about as simple as apps get, and it can be a great tool in the hands of developers. It gives you a quick way to test for app conflicts with notched MacBooks, and it’s completely free for anyone to use.