The exact development cost depends on multiple factors. First, it would depend on the type of development platform, whether you would build an Android app or an iOS app. Next, the features you want to integrate into your Instagram Clone app will affect the cost. You can include features like lenses, filters, stories, reels, messages, video/audio calls, discover, etc.
The location of your development team, the total hours of work, the technological requirements will also add to your cost. So, it’s better to consult a tech expert to get an estimated quote based on your requirements and overall efforts.