CallPesa develops real-time mobile call billing solutions for professional service firms. It offers an android application that allows professional services firms to instantly deploy and connect to existing back-office services. CallPesa also provides time tracking, billing and invoicing, pre-call payments, analytics and more. It currently serves a growing number of legal, accounting, architecture and engineering, consulting, creative, IT services, and healthcare all over the world. Victor Mwago, a lawyer and legal technologist founded CallPesa in August 2020 and formally launched in November 2020. It has its headquarters in Nairobi, Kenya.