Simple Travel Calculator is a free Android application developed by サボテンに水. It falls under the Travel & Navigation category and aims to provide users with a convenient currency calculator for their travel needs. With this app, users can easily convert Japanese Yen to various foreign currencies, and vice versa.

One of the key features of Simple Travel Calculator is its ability to calculate currency conversions between Japanese Yen and 60 other currencies. Users can customize their preferred currency settings in the app's settings screen. The app also offers an automatic rate update feature, allowing users to stay up to date with the latest exchange rates.

In addition to currency conversion, Simple Travel Calculator also provides users with a discount list, which displays the amount of discount obtained based on the selected rate. Users have the option to customize the app's appearance by selecting a background color from the color grid.

It's worth noting that the app allows manual rate modification, with 1 USD as the criteria. However, it's important to keep in mind that the app only supports calculations up to 11 digits. If the result exceeds this limit, it may not provide an exact figure.

Overall, Simple Travel Calculator offers a straightforward and user-friendly solution for currency conversion during travel. With its range of features and ease of use, this app can be a handy tool for travelers looking to quickly calculate and convert currencies on the go.