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Integration of Sticker Market into Viber Mobile App

Integration of Sticker Market into Viber Mobile App

Entertainment, Telecommunications, Software products


The Customer, an international company, is the developer of Viber – an instant messaging and VoIP app which has over 900 mln active users all over the world.


Since there were a lot of similar applications on the market, Viber Media soon realized that they need to stand out from competitors not only by offering lower prices, but also by providing more functionality. That is why they’ve decided to integrate a Sticker Market to the app.


In addition to already providing Viber's its custom mobile app development, ScienceSoft was requested to create a backend service for in-app purchases (stickers). To complete the project, ScienceSoft had to do the following:

  • Provide Specification
  • Create Purchase validation service
  • Create Add product service
  • Create Remove product service
  • Create Get products service
  • Implement deployment scripts with separate configuration files for each environment
  • Create monitoring

It was decided to use Zend Framework 1 while purchase validation service was based on Android, iTunes and Windows Phone in-app purchase API.


As a result, Viber Media enriched its app with nice and functional sticker market that allowed its users to download free sticker sets as well as to buy additional paid collections. The market contains more than a dozen of sticker sets with a unique design.

Sticker Market made the app even more attractive to users. In addition, it helped Viber stand out from competitors and take leading position on the market.

Technologies and Tools

PHP, MySQL, Zend Framework 1.x, Zabbix.

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