CryptocurrencyPrices — Open Source Productivity App

CryptocurrencyPrices is an app for Android devices to check historical cryptocurrency prices (in USD).

Its main activity contains a spinner view to select currency (searchable list contains 100 most worth cryptocurrencies - sorted descending by market cap). It also allows to set date range - actual or archival, chosen from date picker. There is, as well, chart which shows selected cryptocurrency price changes (with calculated percentage value of price trend) in selected time period - app allows to select last 1 year, 1 month, 1 week and 24 hours.

The app contains a local database. It is used for caching downloaded data - it saves data which has been visible on the screen to allow browsing it later, when no Internet connection is available.