Searching for the best mobile app development companies in Mumbai, India. Here is the list of the top 10 App Development Companies in Mumbai. Fusion informatics is one of the leading companies in the field of mobile application development. We have many years of experience in creating mobile applications. For more Details Contact – +91 63610 54076; Mail ID – firstname.lastname@example.org; Address – No – 13/1-1, 2nd Floor, Srinivas Tower, 100 Feet Road, 1st Stage, BTM Layout, Bangalore.