A free app for Android, by MX invest.

Free Forex Signals – Trading Signals is an application that provides daily forecasts for the most popular currencies. It also shows you the historical prices of currencies in the last 24 hours and the most recent updates. 

In addition, the app is very easy to use. You can select the currencies you want to follow and get daily updates on the latest exchange rate. You can choose to follow the price of a specific currency in the last 24 hours, 7 days, or the last month. The app will also send you an email every time there is an important change in the exchange rate.

The app also allows you to analyze the charts and see the price movements in the last day, week, or month. You can also choose to follow the price in the form of a graph or an image.