1. 21Twelve Interactive :
21Twelve Interactive is a custom mobile app development company based in Brunei that offers comprehensive solutions for new businesses. They own expert developers who are dedicated to the development of applications for Android and iOS platforms. Its main objective is to provide innovative mobile application solutions for small and large companies. They specialize in the development of customized mobile applications for all sectors. These are cutting-edge technologies that combine all the latest technologies, adapted to the needs of customers.