How can you test mobile app currency support?

1 Choose your target currencies

The first step in testing mobile app currency support is to identify which currencies you want to support and how they are used in different regions. You can use online resources such as Google Play Console, App Store Connect, or Statista to research the most popular or profitable markets for your app category and genre. You should also consider the legal and regulatory requirements of each market, such as taxes, fees, or restrictions on certain transactions or payment methods. Based on your research, you can select the currencies that are most relevant and feasible for your app.

2 Set up your testing environment

The next step is to set up your testing environment with the tools and devices that can simulate different currency scenarios. You can use a localization platform such as Lokalise, Transifex, or Phrase to manage your currency strings and translations, and integrate them with your app code. You can also use a currency conversion API such as CurrencyLayer, Fixer, or Open Exchange Rates to fetch the latest exchange rates and apply them to your app logic. To test how your app displays and functions with different currencies, you will need to use multiple devices or emulators with different locales, languages, and settings. You can use tools such as Firebase Test Lab, BrowserStack, or Sauce Labs to access a variety of devices and browsers in the cloud.

3 Test your currency formats and symbols

The third step is to test how your app formats and displays different currency values and symbols. You should check that your app follows the conventions and standards of each locale, such as decimal separators, grouping separators, currency signs, position, spacing, and rounding. You should also verify that your app handles currency abbreviations, codes, and names correctly, and avoids ambiguity or confusion. For example, you should avoid using $ for both US dollars and Australian dollars, or using EUR for both euros and Ethiopian birrs. You can use libraries such as Intl, Numeral.js, or Accounting.js to format currency values and symbols according to each locale.

4 Test your currency conversions and calculations

The fourth step is to test how your app performs currency conversions and calculations. You should check that your app uses the correct exchange rates and updates them regularly, and that it applies the appropriate fees or commissions if applicable. You should also test that your app calculates the correct amounts and totals for different transactions, such as purchases, refunds, subscriptions, or donations. You should also ensure that your app handles rounding errors, currency fluctuations, and negative values properly. You can use tools such as Postman, SoapUI, or JMeter to test your currency conversion and calculation APIs and endpoints.

5 Test your currency compliance and security

The final step is to test how your app complies with the currency regulations and security standards of each market. You should check that your app follows the tax rules, currency restrictions, and reporting obligations of each country or region, and that it displays the relevant information and disclosures to the users. You should also test that your app protects the users' personal and financial data, and that it uses secure and reliable payment methods and gateways. You can use tools such as OWASP ZAP, Nmap, or Burp Suite to test your app's currency security and vulnerability.

6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?