A launcher app for android and iOS

hey, Myself Samarth I am looking for a developer who can develop an custom launcher app for android and iPhone by Launcher app I mean through which you can customise your phones Home Screen apps and themes here are two examples I am looking for https://play.google.com/store/apps/details?id=com.teslacoilsw.launcher&hl=en_IN&gl=US https://apps.apple.com/in/app/launcher-with-multiple-widgets/id905099592 so please have a look at it and tell me the prize and time it will take