ALLEN vs Trek Accessories
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ALLEN
This app helps you find the ideal rack for your vehicle by connecting to product information. It simplifies the process of selecting the perfect accessory for your ride.
- Connects to product information
- Finds perfect racks for vehicles
- Simplifies accessory selection
- Vehicle compatibility information
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The Allen app connects to your products, information and makes it easier to find the perfect rack for your ride!
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.
- 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
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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
Verdict
The clearest difference is review sentiment: ALLEN at 100% against Trek Accessories's 36%. ALLEN also leads on rating (5.0 vs 4.7). Trek Accessories's advantage is ratings volume (204 vs 2). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ALLEN holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Trek Accessories has 204 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of ALLEN's written reviews are positive against 36% of Trek Accessories's.
Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 3, 2026.
| Parameter | ALLEN | Trek Accessories |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.7 (204 ratings) |
| Positive reviews | 100.0% of reviews — better | 36.4% of reviews |
| Number of ratings | 2 | 204 — better |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 297 MB | 28 MB |
| Age rating | 17+ | 4+ |
| Developer | The R A Allen Company Inc. | Trek Bicycle |
Customer experience
ALLEN
Trek Accessories
In-app purchases
ALLEN
No in-app purchases
Trek Accessories
No in-app purchases
