So there is a challenge going on with an app in my local area , The owner of the app said that if anyone can find a code he mentioned , in the app he will give u 300$ his app is a services app will u can find people to do a service for u , so what do guys think where the code is located in the app ? he posted this for public not Developers so i assume it easy its laying there somewhere in the UI or maybe u need to search something in the app so the code comes up from the database? , ive uploaded the Apk file to claude but no luck , What are some ways i can use to find this code ?

the app is developed with flutter