Overview

The Volume Mobile SDK is the primary and highly recommended method for integrating payments within mobile applications. It is designed to deliver a seamless payment experience with minimal user input, enabling a near one-click checkout flow.

Volume currently supports payments in GBP and EUR.

To maximize conversion and adoption rates, consider following the guidelines below:

• The Volume SDK is the primary integration method for comprehensive feature and product coverage. You can choose from Flutter, iOS, Android, or React Native SDKs, depending on your platform of choice.
• Prioritize optimizing the payment methods page to maximize adoption rates and reduce user input requirement, focus on delivering a clean and seamless user experience within your app. To achieve the best results, be sure to follow our UI Best Practices guidelines.
• Implement deep linking on your return URL to enable a seamless, app-to-app experience.

Volume Payment Features

Integrating Volume via SDK unlocks the full suite of features, delivering a seamless and effortless payment experience for users while ensuring the highest level of payment security.

Payment authorization method

Volume SDKs are primarily designed to enhance the mobile payment experience, enabling customers to securely authorize payments using biometric authentication methods such as Face ID or fingerprint recognition. This ensures a fast, secure, and effortless payment process.

Bank detection

Volume supports all major banks in the UK. However, customers won't need to search through a long list of available banks. Instead, thanks to a smart detection feature that identifies installed banking apps on the user's device, only relevant banks are displayed. This ensures that users never have to scroll, search, or interact with unnecessary options when selecting their bank - resulting in a faster, more intuitive experience.

Bank detection via IBAN

Banks in the European Union typically impose stricter requirements during the payment process compared to those in the United Kingdom. Notably, some EU banks require users to enter their IBAN, which can detract from the overall payment experience. However, the Volume SDK allows you to provide the user’s IBAN upfront, effectively bypassing this step.

Given the significantly larger number of individual banks across the European Union compared to the United Kingdom, streamlining the bank selection process is especially important. With the Volume SDK, you can also pass the user’s email address along with the IBAN to further optimize this process. Volume will pre-select the bank based on the supplied IBAN, enabling a seamless payment experience for EUR transactions.

Payment speed

Payments with Volume are processed instantly by leveraging the Faster Payments Scheme (FPS) for GBP and the SEPA Instant scheme for EUR transactions.

Currency	Scheme	Availability	Standard processing speed	Maximum processing time
		24/7	Less than 1 minute	2 hours
		24/7	Up to 10 seconds	Up to 10 seconds