Java Android app game [Part 1/3]

Hello Freelancers! I hope you are great. I am searching for a java android game expert to utilize my current app which is already measuring values from sensors and it saves them to an online db (I WILL ATTACH IN CHAT). We need to extend this app to a game in 3 parts. First part is described in the descriptions (2 DOCS ATTACHED). Kindly read carefully both of the docs before you bid. To help you imagine this, we want to create a game similirar to the one in this link: [login to view URL] You can read both docs to understand what we need in detail and step by step. Generally, It will basically be a game with 4 modalities, each modality 4 sessions and each session 4 games (in the games of each sessions we will gradually decrease the time a user is given to succeed the task). All results will be stored in the online db (we already store our measuremetns there). We would like the user to login to the app (or sign in if he is a 1st time user). So in the db we will store: 1. username 2. modality 3. session of modality 4. measurements from each game of each session All is explained in the 2 doc ATTACHED. We have about a month for the implementation and the payment is $300 + $60 for full documentation. I am open to your proposals on how we could implement this part easily and efficiently. If we work well and get along together I would be more than happy to cooperate on the next parts as our developer is not available and we a re searching for a permanent solution. I will be happy to meet you and Thank you a lot in advance Happy Biding :)