Company Tomonari Okubo created these great apps:
blogma, FesNavi(FRF) for preparation and review of Fuji Rock Festival, FesNavi(SST) for Summer Sonic (Tokyo), FesNavi(SSO) for preparation and review of Summer Sonic (Osaka), FesNavi(RIJF) for preparation and review of ROCK IN JAPAN Festival, FesNavi(RSR) for preparation and review of Rising Sun Rock Festival, FesNavi - World Music Festival Navigator, Coachella, Glastonbury, Primavera, Fuji Rock, Sonar, Summer Sonic, Wood Stock, and others..
