Just got finished testing it. The app seems pretty primitive; I set the alarm and took a short walk. It went off immediately, which is good, but then the app just said the alarm was off. So then I’m wondering, what do I do? How do I turn it off? And why doesn’t the app say that it’s alarming? So I cycled the alarm on and then off, and it stopped alarming.And what’s the big button on the device for? I have no idea.Three stars I guess. My bikes have been stolen 4 times in the last 2 years, so I really need this to work.Update: If you set the alarm and lock up next to someone else, when that person is unlocking their bike, it jiggles the device enough for the alarm to go off. I didn’t get a text message alert, but it made me think, “Isn’t this just something that tells the thief that they need to smash the device? Wouldn’t this be more effective if it was silent?” I’m going to try and weld a steel case for it so it’s not so easy to destroy. 16 gauge should work.

First of all let me say that any new device release is going to have a few weeks/months of improvements which is exactly what the V2 version of Boomerang went through. But, as expected, the unit works well. The APP interface was a bit ragged at the beginning but it has improved greatly since the first release. I'm giving this a 4-STAR rating because it's a quality manufactured device that works as advertised. Because they are constantly improving the APP and actively addressing the identified issues with the APP. Because they are in contact with customers, asking for and taking our input. Currently the only problem I've had with the latest release is that I had to turn it on twice or turn it off twice on a couple occasions. The screen always indicated the correct state of the device and the device always alarmed when the bike moved or was bumped. It has tracked every Trip accurately. I'm very satisified with this device and highly recommend it for bicycle security.

I started using Boomerang Bike in August 2023. Two months in and I’m extremely happy with this product. It’s simple, cheap, elegant, and is a highly effective deterrent. I’ve had to leave my bike in risky locations for stretches of several hours, and so far so good. I had a few issues at first with not being able to turn the alarm on or off, but after reading the manual carefully, I was able to figure out what I was doing wrong (I wasn’t reconnecting to the device from scratch each time I wanted to control it). Since then it’s been plain sailing. The stats on my miles and trips are an added bonus. Overall, this is a great device and app.

The app has been improving greatly over the last few revisions. The core anti-theft function seems really accurate in my testing. The push notifications come quickly if the alarm is set. The time to disable the alarm is still a bit variable and sometimes my kids set it off on our cargo bike because they are impatient. Overall, it provides me the peace of mind that I’ll know if somebody tries to walk away with my bike quickly. 5th star comes from the great customer service in general. Boomerang listens to feedback and is responsive to their user community.