Hi Jeanniton! Glad you enjoyed the guide :) A Github repo link to the branch coded in this section of the tutorial is available at the bottom of the article (https://github.com/njwest/React-Native-JWT-Client/tree/frontend-only).

Full React Native code (through Part III) is available on master (https://github.com/njwest/React-Native-JWT-Client/), while a repo containing both the mobile client + Elixir API is also available on my Github (https://github.com/njwest/React-Native-Elixir-Phoenix-JWT)