KoinWorks iOS Assesment

Create a simple Crypto Currencies app using CoinGecko API, contains a list page and a details information page. Product and tech specification as described below.

Product Requirement

• Set the default sorting by largest market cap.
• Infinite scroll pagination, 15 items per page.
• Each item in the list must display following information:

icon
name
symbol
current USD price
current price change percentage (24-hour).

• Details page consists of following information

icon
name
symbol
current USD price
market cap
market cap rank
current price change percentage (24-hour, 7-day, 30-day, 1-year) in horizontal view.
asset description
Market Charts

Tech Implemented

• iPhone only, potrait mode, iOS 13 target.
• Xib UI.
• 3rd-party SDK (Alamofire, SDWebImage, DSFSparkline, Localize-Swift, Cuckoo).
• Reactive using Combine
• Handle API error and present message in the app.
• Utilize Swift feature (i.e enum, protocol, generic, etc)
• Provide UI to switch beetween language between English & Indonesia (reflected to asset's price currency, name, and description).
• Local persistent storage.
• MVVM architecture pattern.
• Unit Tests.

Reference

• CoinGecko's Swagger Doc

List API

• /coins/markets
• /coins/{id}
• /coins/{id}/market_chart?vs_currency={vs_currency}&days={days}