TrackR Bravo has the features you'd demand from a key finder. The Bravo connects to your phone over Bluetooth, and an app on your iOS or Android device lets you sound an alarm on the Bravo to track down whatever misplaced item you've attached to it. The finding feature goes two ways: Press and hold a button on the TrackR Bravo itself, and your phone will sound an alarm.
TrackR keeps fiddling with the Bravo, and the latest changes have introduced better antennas for improved range. My testing certainly bore this out. When I tested an earlier version of the Bravo, I usually lost a connection with the key finder within 20 feet. Things are much improved now; I could remain connected to the device even when I was 70 feet away.
The problem is, the Bravo has a hard time re-establishing a connection with your phone once you've gone out of range. Sometimes, I was able to pick up the signal again after about 12 feet of retracing my steps. Other times, it took me 50 feet until the Bravo device reappeared on its app. And on more than one occasion, I couldn't re-establish a connection until I was right on top of the device. The TrackR app is little help in these instances. It uses descriptions like "Near," "Close By," and "Far," but they appear haphazardly. I've had the app tell me my Bravo was far away when it was within arm's length.
The Bravo has a geofencing feature that will alert you when you become separated from your keys, though you'll have to dig into the settings of the TrackR app to enable it. The geofence alerts work, but with a serious caveat: There's a noticeable delay of about 7 seconds between when you lose contact with the Bravo and when your phone sounds the alarm. Seven seconds may not sound like much, but I walked more than 100 feet away from the Bravo in a public park before my phone alerted me that I had left something behind.
TrackR did something clever with the alarm noise on the Bravo, giving an escalating pitch to alert. I don't have the world's greatest hearing, but I could still pick up the higher end of the alert noise in a public park from 30 to 40 feet away. I was also able to hear the device when it was buried under a pile of laundry.
You'll need to replace the TrackR Bravo's battery after a year, which is easy to do via a swinging arm that pops out of the Bravo and holds the CR1616 battery in place. It's certainly much easier to replace the battery in the Bravo than it is in the TrackR Sticker, an older, smaller key finder that TrackR still sells for $25.
Like the Duet and the Tile, TrackR's Bravo and Sticker feature crowd-finding features. For example, lost devices can be found by other TrackR users who send anonymous reports back to TrackR when they're within range of your lost valuables. But such features require widespread adoption of that particular key finder to be of much use. Still, it's a nice backup for those times when not even the Bravo's audible alarm and solid range can keep your keys from getting lost.
Range: 70 feet on average; Largest distance: 78 feet
Battery Type: Replaceable CR1616 battery
Loudness claimed (dB): 85 dB
Compatibility: Android, iOS