Quiz App Bug Fixes, Reward Table, Interactive Features & Publishing

We are looking for a App developer. The developer will complete final QA testing, bug fixing, and release preparation for the Quiz App on iOS and Android. Responsibilities include regression testing, module testing, payment flow validation, and resolution of critical functionality, stability, UI, and data-related issues. The scope also includes implementation of interactive Digital Library elements such as interactive pages, animations, clickable components, and user feedback states, as well as integration of the Level System and Reward System according to the provided specifications. The developer will prepare release candidate builds, perform final validation and polishing, fix remaining release-blocking issues, and provide project handover materials, including source code access, build instructions, and deployment documentation. Support for App Store and Google Play submission will also be included. Following publication, the developer will provide two weeks of post-launch support to address reproducible bugs, crashes, payment issues, library access problems, and other launch-related defects within the agreed project scope.