Company Oka Communication created these great apps:
列番号変換, Two Doors, footsteps, astrologicalSign, Ancient Stream, BandG, 素数入力装置, Legacy3D, CodeExplorer, 日本縦断, CardsCalculation, Fifty, OE_Checker, kyoppu10, Three Stop Watches, 緯度経度メッシュ変換, Slash Poker, words counter, Dragon Dance 104, 干支コンパス, GalaxyDice, 金ころがし, CherryBlossomMaker, 素数はひとつだけ, 漢字クイズ 激闘！爆裂３４万問, and others..
