If you are one of the lucky Premium Bonds winners, then National Savings & Investments' official prize checker app is the perfect tool for you. Available for free on iPhone, this app lets you check if you've won anything from £25 to £1 million in the monthly prize draws.

The app has a user-friendly interface and comes with a range of features that make it easy for you to check your Premium Bonds prize wins. You can enter your Premium Bonds holder’s number or NS&I number and check prizes for the whole family. Additionally, the app will also notify you about any unclaimed prizes and give you a countdown to when the next results are available. You can also set a PIN to keep your details safe.

However, before downloading the app, it's important to read the terms of use available at nsandi.com/prize-checker-app-terms. The app will also ask for your consent to collect data about how you use it, which you can change at any time within the app.