We are often asked by customers and prospects to compare our beloved Approov with Apple's DeviceCheck offering. Since DeviceCheck is intended to uniquely identify iOS phone instances then this is a reasonable question. However, DeviceCheck and Approov are designed to do quite different things and therefore we wrote a handy guide to help our customers appreciate when to employ each solution and why. You can download the guide from here.
You may also be interested in Google's SafetyNet technology, which is different again from Approov. It's actually different from DeviceCheck too and we have another handy comparison guide which you can also download from here.