Comparison

ARadar vs Trek Accessories

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ARadar

Enhance your cycling safety by connecting compatible radar devices directly to your Apple Watch. Receive vibration and audio alerts for approaching objects, view ride statistics, and sync workout data to health apps.

Highlights
  • Direct Apple Watch radar connection
  • Vibration and audio alerts
  • Overtaking statistics
  • Health App and Strava sync
  • Cadence sensor auto-connection
  • Mirror view on iPhone
Features
Currently charting
Read full description

Improve your safety with the ARadar app! Connect your Garmin Varia™ (only models with bluetooth!) to your Apple Watch directly without using iPhone or any other Garmin device (no needs for a Garmin Watch or a Garmin cyclocomputer anymore!) It's the perfect companion for every bike commuter! Also Bryton Gardia R300 is compatible! Added also eRTL615 It will vibrate and ring the Apple Watch when an object is approaching and you can have also Voice Feedback! You will see also statistics about overtaking during the ride! The app also save workouts (heart rate and gps information) to Health App and Strava! Other features: - Cadence sensor auto connection supported - Mirror view on your iphone ARadar is not affiliated with or endorsed by any subscription service or maker of exercise equipment.

About

Trek Accessories

Enhance your cycling safety with advanced alerts and real-time vehicle detection. This app provides visual and audible warnings for approaching vehicles, helping you stay aware of your surroundings and prepare for passes. It also allows remote control of your connected bike light for increased visibility.

Highlights
  • Real-time vehicle detection
  • Audible and visual alerts
  • Distance and side-to-side positioning
  • Remote bike light control
  • Daytime running light activation
  • Adjustable alert settings
Read full description

The Trek Accessories App adds additional functionality to the Trek CarBack Radar Rear Bike Light by giving cyclists advanced alerts and a real-time visual depiction of rear approaching detected vehicles. Helps you see cars. Use the Trek Accessories App to receive visual and audible alerts of detected rear approaching vehicles. The Trek Accessories App and Trek CarBack Radar can detect rear approaching vehicles from up to 240M, with vehicles first appearing with an audible beep and a visual indicator at the bottom of the App screen. Once the detected vehicle approaches to within 150M, the vehicle is shown on screen in real time. Once within 75M the Vehicles location is depicted in both distance behind and distance to either side, indicating preparation for a potential pass. Once the vehicle completes a pass, an audible alert indicates the pass and the vehicle drops off the screen. Helps cars see you. The Trek Accessories App also gives the ability to turn on a connected Trek CarBack Rear bike Light, all from the App screen. The CarBack Radar offers Daytime Running Light Performance that can be seen from up to 2km during the day to help a cyclist be more visible on the road. Audible and Visual Alerts You can choose the best way to receive alerts – Alerts will be shown visually on screen as well as an audio alert when a detected rear approaching vehicle is first detected, and again when it passes. You can choose to turn audible alerts on and off. This allows you to use the app the way you ride – either with a phone mounted on your bike’s handlebars, or stowed in a jersey pocket. *Please note that the Trek Accessories App currently only works with Trek CarBack Radar Rear Bike Lights. Learn more about Trek CarBack Radar Rear Bike light here - https://www.trekbikes.com/us/en_US/carback/ Find Trek Accessories App FAQs here - https://www.trekbikes.com/us/en_US/FAQ/trek-carback-radar-rear-bike-light/ Having trouble? Contact our support team for assistance at RiderSupport@Trekbikes.com

Screenshots

ARadar4 screens
Trek Accessories4 screens

Verdict

The call

The clearest difference is price: Trek Accessories at Free against ARadar's $5.99. Trek Accessories also leads on rating (4.7 vs 4.4). ARadar's advantage is review sentiment (72% vs 36%) and update cadence (every 3 weeks vs every 3 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Trek Accessories is free to download; ARadar costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Trek Accessories holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 78 and 203 respectively. Written reviews complicate that: 72% of ARadar's written reviews are positive against 36% of Trek Accessories's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ARadar ships an update every 3 weeks, Trek Accessories every 3 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 4 level
ARadar versus Trek Accessories: the parameters behind the verdict, then further details
ParameterARadarTrek Accessories
Price$5.99Free — better
Rating4.4 (78 ratings)4.7 (203 ratings) — better
Positive reviews72.3% of reviews — better36.4% of reviews
Number of ratings78203 — better
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#30 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.4 — better17.0
Further details — not scored
Size12 MB28 MB
Age rating4+4+
DeveloperRoberto ViolaTrek Bicycle

Customer experience

ARadar

All ratings76 ratings
Positive85.5%
Neutral1.3%
Negative13.2%
Written reviews47 reviews
Positive72.3%
Neutral4.3%
Negative23.4%

Trek Accessories

All ratings184 ratings
Positive94.6%
Neutral2.2%
Negative3.3%
Written reviews11 reviews
Positive36.4%
Neutral36.4%
Negative27.3%

In-app purchases

None

ARadar

No in-app purchases

None

Trek Accessories

No in-app purchases

Questions

Is ARadar free?
ARadar costs $5.99, with no in-app purchases.
Is Trek Accessories free?
Trek Accessories is free to download, with no in-app purchases.
Which has better reviews, ARadar or Trek Accessories?
Trek Accessories is rated higher. ARadar averages 4.4 out of 5 from 78 ratings, while Trek Accessories averages 4.7 from 203 ratings.
Do ARadar or Trek Accessories have ads?
Neither ARadar nor Trek Accessories shows ads.
Which is updated more often, ARadar or Trek Accessories?
ARadar ships an update every 3 weeks, and Trek Accessories every 3 months. Most recently, ARadar was updated on October 30, 2026 and Trek Accessories on October 24, 2026.

Other comparisons