Comparison

C.Scope Relay vs Trailer Sentry

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

Head to head

About

C.Scope Relay

Features

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Download data in real time with GPS co-ordinates as you carry out a survey. View maps of all the surveys you have carried out as satellite or road maps and email them from the map page. This app works with the CScope PC Toolkit, spreadsheets, and Google Maps, allowing further analysis of the data in the surveys. To use the app you will need a locator which supports Bluetooth and iPhone.

About

Trailer Sentry

Features

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The Trailer Sentry is an anti-theft device that is capable of locking trailer and tractor brakes preventing assets from being moved or stolen. The optional Cargo Guard hardware also enables the locking and unlocking of cargo doors via the app. Dispatch may grant or remove access via web-based software to specific drivers to control specific assets using the app from any Bluetooth-enabled iOS phone or tablet.

Screenshots

C.Scope Relay4 screens

Trailer Sentry3 screens

Verdict

The call

The clearest difference is iOS requirement: Trailer Sentry at 12.0 against C.Scope Relay's 14.0. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

C.Scope Relay ships an update every 3 months, Trailer Sentry every 5 months. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 5 level

C.Scope Relay versus Trailer Sentry: the parameters behind the verdict, then further details
Parameter	C.Scope Relay	Trailer Sentry
Price	Free	Free
Update frequency	Every 3 months — better	Every 5 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	14.0	12.0 — better
Further details — not scored
Size	47 MB	2 MB
Age rating	4+	4+
Developer	C.Scope International Limited	7PSolutions, LLC

In-app purchases

None

C.Scope Relay

No in-app purchases

None

Trailer Sentry

No in-app purchases

Questions

Is C.Scope Relay free?

C.Scope Relay is free to download, with no in-app purchases.

Is Trailer Sentry free?

Trailer Sentry is free to download, with no in-app purchases.

Do C.Scope Relay or Trailer Sentry have ads?

Neither C.Scope Relay nor Trailer Sentry shows ads.

Which is updated more often, C.Scope Relay or Trailer Sentry?

C.Scope Relay ships an update every 3 months, and Trailer Sentry every 5 months. Most recently, C.Scope Relay was updated on October 7, 2026 and Trailer Sentry on October 3, 2026.