Flutter Training App Game MultiCompany

We want to create our own multiplatform Flutter (Flutter last version) application, the main objective of this application is to train company personnel through individual challenges or contests (person against person) or team challenges, which will allow us to evaluate the achievements and earn insignia (points) to the users of the application ( The application must be multi-company, with excellent look and feel) in Flutter to Android and iOS (we are going to provide the back-end and the REST API (Json). The first deliverable (1 week) is an APK (developed in flutter) that complies with the defined design (attached images), then the integration with the REST API begins (the delivery deadline is 3 weeks) published in the Play Store and Apple Store (and running on the last 3 versions of Android and iOS). The application must support multiple languages ​​(all texts are returned by the back-end, by default the language will be Spanish but the back-end will return the corresponding language for each company) Here we show a video of the reference application of the functionality: [login to view URL] And this is the new image (colors and design) that the new one should have: [login to view URL] Good code quality, UX/UI, daily progress in GitLab. I do not have a budget assigned, I need a quote in time and cost to meet the requirements.