Abstract : Gym developments in Indonesia begins with a special training for athletes and not for the public. Equipment was not as complete and as good as in the modern Gym. Modern fitness began to develop at certain hotels and a local fitness center. Not only that, a small fitness center began to emerge. The use of cell phones that were once just to make voice calls only, at this time is more dominant to the use of short message service SMS (Short Message Service) because they are more comfortable and the purpose of communication is achieved. The number of members in a fitness center fitness make use of fitness equipment should be organized and on schedule so that all members can use the equipment. This study aims to create a model that is capable of managing information services for members Fitnes Horison Semarang City by using SMS Gateway. With the SMS Gateway Support Services Information for Members Fitnes Horison Semarang City can provide information in the form of a thank you payment, payment validity period and dissemination of information in the Horizon Fitnes. Kata Kunci : SMS Gateway, Support Services, Fitness Horison Semarang
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