We consider Apple’s AirTag to be the best key finder for iPhone users. It works seamlessly with newer iPhone models (iPhone 11 or later,) allowing you to use Precision Finding to track the exact location of your AirTag — or whatever you’ve attached it to. In our Apple AirTag review, we gave the device high praise for its ease of use. Simply open the Find My app on your phone and you can use it to track the location of the AirTag. Once you get close to the AirTag, within around 20 feet, you will be able to use Precision Finding to get exact directions. The AirTag will also beep to give you an idea of its location, but it can be a little too quiet to be reliably heard if the AirTag is under something. Luckily, using the directions on the app will be enough to find your AirTag in most cases. About the size of a coat button at 1.26-inches across, the AirTag is designed with all the usual flair Apple products are known for. And just like other Apple products, there are plenty of accessories on the market, too. Apple offers a range of keyrings and loops to keep your AirTags securely attached to your keys or luggage, which can be purchased separately.