The long-tailed macaque (Macaca fascicularis) is a primate often found in Indonesia, with the current IUCN Red List status being endangered. One of the habitats of this species is the Kalisalak Forest. The social behaviour of this species has never been studied much; therefore, further research is needed on this site. This study aimed to analyse the frequency and duration of social behaviour of seven age groups of each sex. The study was conducted from April to July 2021. The research used scan sampling and continuous recording rules with 15-minute intervals (8:00 am-5:00 pm). The social behaviour data were analysed by ethogram percentage and compared with each social behaviour and age group using a statistical correlation test. The results show that the highest frequency is playing (42.92%), then grooming (41.29%), while the lowest is agonistic (8.33%), and then mating (7.46%). The duration of grooming (57.61%) is higher than playing (42.39%), while agonistic and mating are not counted because they are event behaviour. No frequency correlation (p-value>0.05) between grooming and age exists. A frequency correlation (p-value<0.05) between playing, agonistic, and mating with age group. There is no correlation (p-value>0.05) between the age group’s duration of grooming and playing.

Several sectors, including technology, influence the need for food to date. Global heating conditions also impact the existing food system since poor agricultural conditions reduce farm product output and increase famine risk. As cybernated start-ups develop, it enables multiple parties to develop start-ups in farming and food sectors. This study aims to develop a self-agriculture and food start-up app based on Android OS. This application allows each user to prepare and commercialise food items autonomously. The system is intended to encourage individuals to perform tasks such as cultivating and selling harvests, purchasing dietary commodities, and monitoring current microclimate circumstances.