Why?

Sinch: instant messaging Parse: user authentication

Bing Translate: translation services

What did you write yourself? !

- listview of users - custom listview for messages

- intents - adding extra message to an intent

- onclick listeners - async tasks

- error handling

Benefits (in my opinion): !

- lets you focus on a mastering basic programming skills while still building

cool features - prototype quickly to validate your

business concept before spending $$$ and time on development

Find APIs & SDKs for your own project: !

ProgrammableWeb PublicAPIs data.gov

API for that apis.io Quora