Customers are of course your most valuable asset. In Upodi, Customers have a profile which contains information on the customer and associated payment methods, i.e. a credit card, in order to charge the customer for their subscriptions.
A customer holds information such as contact details, addresses and currency. These informations are passed around the billing of subscriptions, and will be included on the final invoice of a billing cycle.
## Using the API
**Preferrence currency** A customer will have a preferred currency or the default currency. This states in which currency the customer will be billed. Upon a billing cycle Upodi will try to fulfill this preferrence by matching the customer currency with the product plan currencies available. Should a match exist, the subscription and following invoices, will be in the matching currency. If no match is found, the product plan default currency superseeds the decision.
Upodi does not calculate pricing on currencies. We merely pass on the currency between states of subscriptions and match these with the proper payment.
## What's Next
Please visit [the conceptual](🔗) model for relationships.
[Sign in to Upodi](🔗) to create your first customer.
If you are a developer, review the [API on customer](🔗) and the [customer object](🔗).
We're always happy to help with code or other questions you might have! **Search** our documentation or contact **helpdesk**. You can also chat live with us using the Intercom icon.