No, but to ensure professional quality, we recommend using a smartphone with a camera at least equivalent to that of the iPhone 6 or Samsung Galaxy S6.
The resolution must be at least 8MP and be able to manage auto focus, auto exposure and other important criteria to have a sufficient image quality that allows you to edit a movie in HD.
Currently, for iOS, the application works on iphone 5 and subsequent models. However, be sure to always update the OS version of your phone. The oldest version that is still supported by the app is version 8.
As for the camera and resolution, recent iphones (iphone 6s and more) are equipped with a 12 MP camera and other features ensuring optimal quality of your movies, such as autofocus and automatic stabilization of the image.
On Android, the application works on all phones after 2016. The OS version must of course be updated systematically. Currently, the oldest version supported by the application is version 6.
As for the camera, the choice of Android is really extensive, but the technology is there. However, there are some examples of Android smartphones with a more powerful camera: SAMSUNG Galaxy S9, SAMSUNG Galaxy S8, Huawei P20...