Build an App that tracks the users time on the app and give them reward for using is

Here is an outline of the App : This app that I want created is kind of similar to the App called "Forest". What I want it to do is to create a timer that the user sets and the user should essentially do something productive. If they reach that time period without closing out of the app or giving up then they get awarded some sort of way. In the app "Forest" the user gets a tree of some sort and it shows up on their terrain. I wanted something similar in which the user gets some sort of cartoon village type object. Perhaps a villager or a little hut or just anything of that nature. And of course the longer the focus period the user accomplishes the bigger the reward. The whole village art is just a start of how the app should look. I would also like to incorporate texture packs where instead of just this village art style that the user receives they could purchase a texture pack and get different styles like perhaps city like objects etc. Also if they fail to accomplish staying on task then they should get some sort of dull looking object in return. An example would be a destroyed home in a village. Aside from the art that goes in to the app. I would like there too be statistics of the users progress. Like how many minutes/hours they have been on task for a day, a week, and a year. Also a thing I forgot to mention is that when the user opens the app I would like them to see a motivational/inspiring quote. This would be sort of like a quote of the day feature. And another thing for the art is that there should be some sort of currency that the user gets rewarded and if they save up enough of that currency they can buy different types of editions to say the village that they have. That is just and example. I'm looking for art that is outside the box and very creative but yet simple. Thank You.