Chartist is a simple light weight app which has optimized few essential desktop widgets released by Trading View, FxBlue and MyFxbook to work with mobile devices.

The app currently contains
*.Real Time Currency Charts with many tools and forecasts
*.Currency Strength Meter - A Must have tool
*.Currency Heat Map
*.Price Action News Forecasts
*.Visual Market Open Close Time Table

Why Storage File Read/Write Permissions are required ?
This app will save your settings as a database file in your local storage. Each time you open the app it will open the database file and each time you change settings, it will modify/write database file. For this, above permission is requested.