Best Currency Converter App Currency – Simple. If you travel, or are planning on travelling, you’re going to need a currency converter. With a few apps ut there on the subject, we know that its hard to decipher which one to get. I find that the simplified easy to use ones are the best. Enter Currency. Currency is a simple converter for travelers. It has a beautiful and seamless interface for quick access to conversions you need. With over 160 currencies from all over the world you’ll always be up to date. One of the features that is quite handy, is that you can see a graph of the last 6 months. So you can plan whether to exchange money in advance. Like a smart phone calculator, it works offline as well, which is super helpful. Search through 160 currencies via name, code, or country. Each with a custom designed flag. Save currencies to your favorites with one tap. In an app, we look for simple and easy to navigate.