The application is available via Apple's App Store and costs 49 Swedish kronor (£4.10). Users will also have to pay the operator MMS tariff for each sent message.
Currently, the application only works in Sweden for users with a SIM card from TeliaSonera, the local operator that sells the iPhone. But Mobispine is looking to make it available in other countries, according to Joakim Hilj, corporate vice president of sales at Mobispine.
The company has been in discussions with other operators since November, when the application was completed. Since then it has been working on the long process of getting the application approved by Apple. Receiving Apple's approval will open the door for a launch in other countries, according to Hilj, who isn't ready to say when that will happen.
iSendMMS only supports the sending of MMS messages, but the plan is to also add support for receiving messages, according to Hilj. For that to be possible the Mobispine platform has to be connected with the operator's existing MMS equipment, and it would also makes sense to use the Apple notification API (application programming interface) when released, he said in the company blog.
Mobispine isn't a newcomer in the messaging market. It currently sells software to operators that let users send SMS and MMS messages from a PC. Mobispine says it has 25 operators using the platform, including UK iPhone operator O2 and Vodafone.
Apple plans to preview version 3.0 of its iPhone software next week, prompting speculation that a third-generation iPhone may be with us this summer.