Apple Airtag

The best for iPhone — uses Apple's Find My network, the largest in the world, for remarkably fast, accurate location of lost items, plus Ultra Wideband Precision Finding to walk you to within centimetres. Replaceable year-long battery; iPhone-only and needs a keyring holder.

The Apple AirTag is the best tracker for iPhone users because the finding network is everything and Apple's is the largest in the world. Lose an AirTag out of Bluetooth range and any of hundreds of millions of iPhones, iPads, and Macs in the Find My network anonymously and securely report its location — so in any populated area a lost AirTag updates remarkably quickly and accurately. iPhones with Ultra Wideband add Precision Finding, using on-screen arrows to walk you to within centimetres. The battery is a user-replaceable CR2032 lasting about a year, it's small, light, and water-resistant, and it's tightly woven into Find My. It's essentially iPhone-only and has no keyring hole (needing a holder), but for anyone with an iPhone, the unmatched network plus Precision Finding make it definitive.

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Apple AirTag review: Pros and Cons