Need an expert unity developer to build the following features to a Coloring app:
1. subscription - weekly, monthly, yearly etc
2. Add 3 types of boosters
3. Add mystery box
4. App onboarding
Chosen developer hould be available to start work on the project immediately.
N.B The code needs to be flexible for future upgrades and reusable. Should provide proper documentation of the code being developed.
Details shall be provided to the chosen freelancer.