| 1 | Compact key-and-luggage tracker | Large iOS crowdsourced network | iPhone and iPad; limited basic use on other phones | Bluetooth Low Energy; NFC lost-mode tap | About 12 months | Replaceable CR2032 coin cell | IP67; temporary immersion up to 1 m for 30 minutes | About 32 mm diameter; 11 g | Yes, with compatible recent phones | No | Everyday belongings and checked luggage |
| 2 | Android-focused key tracker | Regional Android crowdsourced network | Selected Android phones and tablets | Bluetooth Low Energy; NFC | Up to approximately 15–18 months | Replaceable CR2032 coin cell | IP67 | About 52 × 29 × 8 mm; 14 g | Yes, on supported phones | No | Android users needing directional nearby search |
| 3 | Cross-platform rechargeable tracker | Selectable iOS or Android finding network | Most recent iOS and Android devices | Bluetooth Low Energy; NFC on selected models | Approximately 6–12 months per charge | Built-in rechargeable lithium battery | Usually IPX6 or equivalent splash protection | About 40 × 40 × 7 mm; 8–10 g | Usually no | No for basic finding | International buyers using mixed phone platforms |
| 4 | Google-compatible round tracker | Android crowdsourced finding network | Android 9 or later | Bluetooth Low Energy | About 12 months | Replaceable CR2032 coin cell | Typically IPX5 splash resistant | About 38 mm diameter; 8 g | No | No | Low-cost Android-compatible tracking |
| 5 | Loud-alert personal tracker | Independent app and community network | iOS and Android | Bluetooth Low Energy; phone-assisted location | Approximately 12 months | Replaceable or sealed coin cell, depending on model | Commonly IP67 on current key-finder versions | About 35 mm wide; 8–10 g | No | Optional advanced features may require a plan | Keys, wallets, bags, and audible nearby alerts |
| 6 | Ultra-thin wallet tracker card | iOS or Android finding network, depending on setup | Recent iOS and Android phones | Bluetooth Low Energy; wireless charging on some versions | Approximately 2–12 months, depending on model | Rechargeable lithium battery | Usually IPX5 or basic splash resistance | About bank-card size; 2–3 mm thick; 15–20 g | No | No for standard location features | Wallets, passports, badges, and slim travel documents |
| 7 | High-volume alarm tracker | Independent app and user community | iOS and Android | Bluetooth Low Energy; phone-assisted location | About 12–24 months | Replaceable CR2025 or CR2032 coin cell | Commonly IP67 | About 35 × 35 × 7 mm; 8–10 g | No | Usually optional | Bicycles, backpacks, pet accessories, and equipment |
| 8 | Pet-collar compatible tracker | Bluetooth community network | iOS and Android through a companion application | Bluetooth Low Energy; phone-assisted location | Approximately 6–12 months | Replaceable coin cell or rechargeable battery | IP67 or similar protection on rugged models | About 35–45 mm; 8–15 g | No | May apply to location-history or sharing functions | Pet collars and frequently misplaced outdoor items |
| 9 | Rugged travel tracker | Large mobile-device crowdsourced network | One major mobile operating system, depending on version | Bluetooth Low Energy; NFC lost-mode support | About 12 months | Replaceable CR2032 coin cell | IP67 | About 32–35 mm; 10–12 g | Available only on selected platform versions | No | Suitcases, camera bags, and outdoor equipment |
| 10 | Budget everyday locator | Proprietary companion-app network | iOS and Android | Bluetooth Low Energy; direct phone proximity search | Approximately 6–12 months | Replaceable CR2032 or CR2025 coin cell | IPX4 to IP67, depending on construction | About 30–40 mm; 7–12 g | No | Usually no | Low-cost tracking for keys, remotes, and small bags |