The influence of fast-growing globalization and modernization has a negative impact on the existence of Indonesian culture, namely the degradation of local cultural values and tribal identity crises which are marked by the extinction of various local languages throughout the archipelago. One area that is under threat of extinction of local languages is Papua Province. The symptoms threat of language extinction was discovered when the researcher conducted interviews with young generation from Ngalum, Ketengban, Lepki and Arimtap tribes who studied in Jayapura, Bandung, Salatiga, Semarang and Yogyakarta, which on average they were unable to count traditional numbers even though they were fluent in local languages. This shows that having fluent regional languages do not guarantee their ability in counting traditional numbers. Therefore, the author designs in this study an android-based digital application of traditional number system for Pegunungan Bintang tribe with the aim of facilitating young generation to recognize numbers 1 to 27 in the local language of each tribe and also this study is documented for the benefit of scientific development. Testing of this application is done using blackbox testing so that the obtained result is an application that can run properly according to its function where users can use this application to recognize numbers through sound when the numbers are pressed.