If you use an another currency to control your budgets, you can change the currency symbol without interfering your expenses, there are many different countries currencies available.
It's important to know that's not possible to work with more than one currency at the same time, for example: Have one account in the dollar and another in Euros.
On Mobills Android:
To change the currency on the Android version you can access: Settings > General > Currency and follow the image below:
On Mobills iOS:
You need to tap the "more" icon on the bottom-right side, then you'll be directed to the settings screen. Scroll down the page and tap on the 'Currency' option. The following image will show you how to achieve this option.
On Mobills Web:
This feature isn't available for now on the Web version, but all currency that you registered on the app will be synchronized on the web. The currency is only a symbolism and doesn't effect on the expenses and incomes sum.
Feel free to contact us, for any further question.