It definitely works as advertised
I only used it one time so far and it definitely works. I love that I can listen to my music and run a couple apps in the background. By running this app to let me know that cars are coming behind me by sound and visual. It definitely helps Keeping me safe .
And I use an iPhone 14 Pro Max it works great and only took five minutes to set up.
And I use an iPhone 14 Pro Max it works great and only took five minutes to set up.
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Used to be great
Most recent software really downgraded. Used to run in the background no problem and duck your audio to play the car alert. The app now is only in background maybe 50% of the time and no longer supports reducing media sound just for the alert. Much less functional. Would also be great it if played an all clear tone, the way my wahoo head unit does when cars aren’t detected anymore. The rapidly approaching vehicle alert sounds too similar to the normal alert.
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Worked better in prior version
On February 18th the app updated and it now overpowers my music so that I can barely hear it any time the app is on. If I turn the volume up, I can hear the music, but the traffic notification sounds are unacceptably loud. Not sure if there is any way to adjust the volume of the notifications, but it should not take control of my iPhone sound level. Haven’t used the radar on my last two rides because of this software update. 😢
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The best app of 2025
This is the best app of 2025, and every single year into the future. Not only can this program/device/application notify users of possible accidents, or getting hit— it can also notify other gps units in cars. A true life saver. This program has one “best of” for the next decade.
It also pairs well with a bicycle gps unit (“lights off” feature).
-Austin
It also pairs well with a bicycle gps unit (“lights off” feature).
-Austin
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Varia RCT rocks, but app is terrible
I use my Varia with a Wahoo Roam, and it’s fantastic in every way. I can then upload video using a usb c cable to my computer. But then there’s the app. The app is so slow it’s useless. Good thing you won’t need it, if you have a computer and a compatible gps.







