Cape Town based Motribe, a platform that enables users, brands, agencies and publishers to build and manage their own mobile social communities, has recently launched JudgeME, a mobile meeting app that provides people with a way to meet each other by uploading and browsing photos.

The app that has already grown to over four hundred thousand users in less than a month and already generated enough profit to cover its costs has grown faster than its developers could scale the technology to manage the demand.

Motribe CEO Nicholas Haralambous says that “One of the main reasons the app has grown so quickly is the sheer volume of users already on MXit and their hunger for new and innovative services.”

Since its launch, the app, that was built using MXit software, served 31 million page views and its users rated 3 million photos during its first month. That’s quite an achievement.

Motribe used the MXit API to build the app in less than a week using standard mobile web programming and the cloud computing power of Amazon Web Services.

The real test for a social networking service is its ability to generate revenue and during the first month 9% of the users bought something using MXit’s virtual currency, generating over 100 000 successful transactions.

Vincent Maher, the technology guru behind the app explains that “When you point ten million active users at something it’s like washing your face with a firehose.”

“Building for MXit is really easy because they take away all the heavy lifting. The normal problems with user registration, profiling and retention are already taken care of so developers can focus on getting the most out of the technology and focus on good ideas,” says Maher.

Watch the video interview with Motribe Founders Vincent Maher and Nic Haralambous here.

Update: Since launching the JudgeME app in the media, Motribe decided to put together some of the key figure and findings in an infographic which you can take a look at below: