Prize Draw App for a Major Mobile Operator’s Promo Game

Solution overview

The application consists of two modules: the admin panel and the client web application. Let’s take a closer look at the functionality of each module.

Admin panel:

• Log in & log out. The admin can log in and out of the admin panel using their login, password, and email OTP verification.

• Role-based access. The app has two roles for admins. The functionality available to an admin depends on whether they are assigned the “operator” or “superadmin” role.

• Data access and management. The admin can access the list of draw participants and winners, view their information, update the status for each win, filter the available information using different criteria, etc.

• Email management. The administrator can initiate the process of sending emails to the winners of the draw and customize the messages.

• Prizes management. The admin can view the list of prizes, the number of distributed and remaining prizes within a specific time period, and can also set and modify limits.

• Reports. The admin can generate reports on prize winnings and download them in CSV/XML format. These reports include information about users and the prizes they won, as well as the status of each winning.

Client app:

• Home page. Participants in the draw can access the game’s main page, where they can find information about the draw and available prizes. They can also read the terms and conditions of the draw and submit their participation.

• Participant verification. The app uses third-parties services integrated with the operator’s app to verify if a user is eligible to participate in the raffle. If not, the user is redirected to a corresponding page.

• Guaranteed prize selection. Participants can get a guaranteed prize based on predefined rules.

• Raffle prize selection. Participants can choose the super prizes they would like to win and submit their participation in the raffle for these prizes.

• Weekly raffles. Participants can join the weekly raffles to have a chance at winning random super prizes.

• Win page. Participants can view information about the prizes they have won, including their statuses, and fill out the winner profile.

• Participants list. Participants can view nicknames of winners and the items they have won.

• FAQ. Participants can access the FAQ section, which provides all the required information, as well as the game terms and conditions document.

• Notifications. Participants can receive SMS or push notifications for raffle updates.

Technical solution highlights

The solution is implemented as a webview application. To participate in the draw, users need to follow a special link, either in the operator’s mobile app or in a browser. Respectively, the draw is displayed as either a web page on top of the mobile app or as a tab in a browser.

The app is integrated with a push notifications service to increase engagement and keep users informed about the draw results. Additionally, our app interacts with third-party services integrated with the operator’s mobile app, enabling efficient two-way communication.

1. Services integrated into the operator’s mobile app provide information about the available prizes for each specific user. As mentioned before, the available prizes depend on predefined rules.

2. Our app, in turn, shares with these third-party services the information about which user receives which prizes.

The selection of specific technologies was defined by the pre-existing tech stack utilized by the operator’s mobile application. To ensure the correct functioning of our WebView application on the top of the operator’s mobile app, we selected necessitated technologies that could seamlessly integrate with the existing infrastructure.

The prize drawing mechanism was implemented using the Mersenne Twister algorithm. This pseudorandom number generator algorithm is well-known for its exceptional randomness and high period, making it ideal for applications that require reliable random number generation. By utilizing Mersenne Twister, we ensured a fair and unbiased selection of winners, providing a transparent process for all participants involved.