Before you start checking off criteria on a checklist, keep in mind that the best app development company is the one that best fits your needs and budget. So, what should you be looking for in a mobile app development company? A Strong Track Record - First and foremost, you want to make sure the company has a proven track record of success. Look for reviews and references from previous clients to find out how satisfied they were with the company’s services, and what they would recommend to future customers.