1. 21Twelve Interactive :
21Twelve Interactive is a digital product development agency that also specializes in the development of Android and iOS applications. So far, he has received several awards for his experience in achieving commercial visions through software solutions. In addition to developing mobile applications, it also offers web design and Ui / Ux design services. He believes in simplicity and punctuality. Although primarily a mobile application development company, they also work with desktop and back-end software. It is based in Mauritania and promises to provide excellent mobile application development services for all types of business problems.