Comparison

Sentinel vs Tensor FRC

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

Head to head
About

Sentinel

Access and verify Network Rail Sentinel smartcards. Check your own card details or authenticate team members and conduct spot checks. Works online for real-time data or offline for card access and stored check history.

Highlights
  • Read Sentinel smartcards via NFC
  • Scan QR codes for card data
  • Verify cardholder information
  • Authenticate team members
  • Perform spot checks
  • Check TVPs (Track Vacancy Permits)
  • Offline access to card data
Read full description

This app is designed specifically to read Sentinel smartcards for Network Rail’s Sentinel system. It allows anyone to check their own Sentinel card and allows authorised card checkers to authenticate their team as well as undertake spot checks and check TVPs. When online, the app shows the most up to date information for each cardholder either by scanning the card’s QR code or by reading the details stored in the smartcard using NFC. Even without mobile internet access, the information stored on the card can still be accessed, any recently scanned card details can also be reviewed, and all checks will be stored and uploaded to the database when back online.

About

Tensor FRC

Features
Read full description

The Tensor FRC app is compatible with Tensor.NET & SSM web service v4.2.0.61 and above, registered with a FRC serial number. The Tensor FRC app provides the following functionality. β€’ the app displays a refreshable list of employees, within a selected fire point, who are booked ON site for fire roll call purposes. β€’ the app also displays a refreshable list of employees who have booked OFF site within a configurable time period. β€’ the user can book a person OFF site directly from the app. Direct communication commands immediately update the status of booked off personnel at clocks and access controllers. β€’ visitors, contractors and visiting employees are included in the app's on / off site lists when Tensor.NET is registered with a WinMCVS serial number. β€’ on or off site personnel can be searched for by all or part of their surname. β€’ full contact details, including name, telephone numbers, photographic image and the time and status of the last site booking, are available for each person on or off site. β€’ the resident site and department is shown for employees. β€’ the visitor company and appointment host details are shown for visitors. β€’ personnel can be immediately contacted by voice call or email using live links in their contact details. β€’ a fire marshal may browse the personnel allocated to any fire point available within their user's assigned site. β€’ lists of on or off site personnel can be filtered by type; employee, visitor, contractor or visiting employee.

Screenshots

Sentinel4 screens
Tensor FRC4 screens

Verdict

The call

The clearest difference is iOS requirement: Sentinel at 13.0 against Tensor FRC's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on June 8, 2026 and September 14, 2026 respectively.

Scorecard1 real difference Β· 7 level
Sentinel versus Tensor FRC: the parameters behind the verdict, then further details
ParameterSentinelTensor FRC
PriceFreeFree
Positive reviews9.8% of reviewsβ€”
Update frequencyEvery 4 monthsEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeβ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 β€” better15.6
Further details β€” not scored
Size6 MB17 MB
Age rating4+4+
DeveloperReference Point LimitedTensor plc

In-app purchases

None

Sentinel

No in-app purchases

None

Tensor FRC

No in-app purchases

Questions

Is Sentinel free?
Sentinel is free to download, with no in-app purchases.
Is Tensor FRC free?
Tensor FRC is free to download, with no in-app purchases.
Do Sentinel or Tensor FRC have ads?
Neither Sentinel nor Tensor FRC shows ads.
Which is updated more often, Sentinel or Tensor FRC?
Sentinel ships an update every 4 months, and Tensor FRC every 4 months. Most recently, Sentinel was updated on June 8, 2026 and Tensor FRC on September 14, 2026.

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