Comparison

Sentinel vs PPAC Compliant101

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

PPAC Compliant101

This app streamlines workforce compliance for construction and regulated industries. It simplifies identity and document verification, remote onboarding, and site access management. The platform ensures accuracy, transparency, and control for high-volume workforces.

Highlights
  • Identity and document verification
  • Remote onboarding and on-site approval
  • Multi-site access with single approval
  • Real-time status and expiry tracking
  • Fast and frictionless for high-volume use
  • Secure data handling
Features
Read full description

Welcome to PPAC Compliant101, a digital workforce compliance solution built for construction and regulated industries. PPAC Compliant101 simplifies identity verification, document validation, and site access by bringing the entire compliance journey into one secure, mobile-first platform. It is designed to support high-volume workforces while maintaining accuracy, transparency, and control. Worker Identity and Document Verification: Workers upload required identity and right-to-work documents directly through the app. Guided capture ensures images are clear and complete, reducing failed submissions and delays. PPAC automatically verifies documents for authenticity, helping teams identify issues early and maintain compliance standards. Remote Onboarding, On-Site Approval: Compliance begins before workers arrive on site. Once documents are submitted and verified, on-site teams can approve workers using a PPAC verification code or QR scan. This ensures that only verified and approved individuals gain access. One Approval, Multiple Sites: After approval, workers can access all sites under the same contractor, reducing repeated checks and unnecessary administration. This creates a smoother experience for both workers and site teams while maintaining full visibility and control. Real-Time Status and Expiry Tracking: PPAC automatically tracks document expiry dates and updates worker status accordingly. This helps prevent expired credentials, reduces compliance risk, and supports audit readiness without manual follow-ups. Fast and Frictionless for High-Volume Use: Built to handle daily induction checks at scale, PPAC supports fast throughput without compromising accuracy. The system is optimised for real-world site conditions where speed and reliability matter. Designed for Industry Compliance: PPAC aligns with industry and statutory requirements, supporting remote onboarding, on-site face match, and ongoing compliance checks. It provides a single source of truth for workforce verification across projects. Secure, Trusted, and Accessible: All personal information and documents are handled securely. Workers can access their compliance status anytime through their digital wallet, while teams gain confidence that workforce data is accurate and up to date. PPAC Compliant101 is built for industry, by industry. A smarter way to manage workforce compliance, reduce risk, and keep sites moving.

Screenshots

Sentinel4 screens
PPAC Compliant1014 screens

Verdict

The call

The clearest difference is update cadence: PPAC Compliant101 at every 3 days against Sentinel's every 4 months. PPAC Compliant101 also leads on review sentiment (19% vs 10%). On price, ads, in-app purchases and monetization model 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

Sentinel ships an update every 4 months, PPAC Compliant101 every 3 days. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

Scorecard2 real differences Β· 6 level
Sentinel versus PPAC Compliant101: the parameters behind the verdict, then further details
ParameterSentinelPPAC Compliant101
PriceFreeFree
Positive reviews9.8% of reviews19.4% of reviews β€” better
Update frequencyEvery 4 monthsEvery 3 days β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.0 β€” better16.6
Further details β€” not scored
Size8 MB344 MB
Age rating4+4+
DeveloperReference Point LimitedPPAC

Customer experience

Sentinel

Written reviews41 reviews
Positive9.8%
Neutral9.8%
Negative80.5%

PPAC Compliant101

Written reviews31 reviews
Positive19.4%
Neutral0.0%
Negative80.6%

In-app purchases

None

Sentinel

No in-app purchases

None

PPAC Compliant101

No in-app purchases

Questions

Is Sentinel free?
Sentinel is free to download, with no in-app purchases.
Is PPAC Compliant101 free?
PPAC Compliant101 is free to download, with no in-app purchases.
Do Sentinel or PPAC Compliant101 have ads?
Neither Sentinel nor PPAC Compliant101 shows ads.
Which is updated more often, Sentinel or PPAC Compliant101?
Sentinel ships an update every 4 months, and PPAC Compliant101 every 3 days. Most recently, Sentinel was updated on October 20, 2026 and PPAC Compliant101 on October 21, 2026.

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