The emergence of educational technology has become part of modern world. This study aimed to investigate the benefits of computers and mobile assisted language learning in English language teaching and learning in upper primary. The study applied the sociocultural theory as developed by Vygotsky (1978) and advanced by Lantolf (2007). The study adopted a qualitative research design. The study location was kyso sub-county; kitui county. The target population was English language grade 5 and 6 pupils and teachers. Purposive sampling method was used to determine the sample size of the study which was 40 pupils and 72 teachers. Data were collected through interviews and observation schedules. The findings of the study revealed that computer and mobile apps encourage both independent and collaborative learning experiences. The study observes that computer and mobile learning methods support contingent learning, where learners can react and respond to their environment and their changing experiences. The study recommends that teachers should be able to select appropriate computer and mobile applications according to the needs and interests of the pupils and incorporate into their classes.