This easy-to-use and accurate Clogau ring sizer will find the size of any ring. Perhaps you want to treat yourself to a nice piece of jewellery? Or you want to buy your partner an engagement ring or a birthday surprise? This app will find out the exact size you need, without them finding out.

There's no need to print anything out or take anything to a store.

Simply place a similar sized ring on your device screen and adjust the size of the circle until it fits the inside of the ring exactly.

As you resize the circle, the ring size is displayed and you can easily switch between the sizing standards used in the UK, North America, France, Germany, Japan and Switzerland.