Stocker

Stocker is a mobile application which provides exchange rates of cryptocurrencies against fiat currencies. Stocker takes user query in text (Natural language) and returns the current exchange rates.

Comment

Inspiration

As an investor in trading in forex, equities, and cryptocurrencies, I wanted to continuously know the exchange rates of cryptocurrencies against a fiat currency. I wanted to build something for voice assistants such as Alexa or Google Assistant, but I felt like a cross platform mobile application would be more accessible to users.

What it does

Stocker provides the exchange rates of a cryptocurrency against a fiat currency or vice versa. It takes input in natural language text and provides current exchange rates for the said currencies.

How I built it

Stocker is built using Flutter, Dart, Wit.ai, and CoinAPI.

  • The interface is built using Flutter.
  • The functionality is done using Dart. packages such as http, convert, and io has been used. These can be found in link .
  • Wit.ai has been used to process the user input and return the two quotes (crypto and fiat). an API call has been made using the http.get method.
  • The two quotes are passed to CoinAPI and the current rate is returned.

Challenges I ran into

I tried using Swift for the project but found making the data model for the json file difficult as wit.ai returned the entities in the following manner: json quotes:crypto { } quotes:currency { } ` Following this issue I switched to Flutter using Dart. Then I referenced the json and accessed it using arrays.

Accomplishments that I'm proud of

Training my own model with such ease. Thanks to the convenience of using wit.ai.

What I learned

I learned about using multiple APIs and using wit.ai to develop chat bots easily.

What's next for Stocker

I intend to implement speech to text in the future. I also intend to develop Stocker natively for iOS using Swift.

Built With

Share this project:

Updates