The focus of the PrePayPower design was to allow customers see their account balance at a glance and to top-up their account with zero friction. We achieved this in iterations to allow for quick and reactive development of features. The app allows the user to add a payment method, which can be used to top-up the account whenever the user chooses. The user can also setup Auto Top-Up. When the user’s balance falls beneath a desired threshold, their balance is automatically topped up by a selected amount. Adding this feature meant that the user wouldn’t have to check their balance throughout the day, while ensuring their home is never without power. All of which provides peace of mind for the user. We also needed to support customers with older meters that could not be topped up wirelessly. We added multiple helpful and accessibility features, such as using voice synthesis, so the user could input their powercode without needing to look at the app. What began originally as topping up and checking balances, expanded into more helpful features for the user such as Auto Top Up, graphs, spending and usage data, wireless top-up and topping up over Bluetooth Low Energy.
We integrated this app with an existing system. Working alongside the technical team at PrePayPower we utilised prior web services APIs. We also made use of Google Tag Manager for user facing text in the app, as well as some logic behind the scenes, such as dynamic FAQ segments. This allowed us to have a quicker turnaround and react fast to our clients needs without being slowed down by the app review process. This, coupled with extensive use of crash reporting and analytics, allowed us to monitor our users usage patterns closely and ensure high user satisfaction.