Comparison

TWIC ADVISR vs iAssign

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

Head to head
About

TWIC ADVISR

This app verifies TWIC cards by checking their Credential Identification Number against a list of canceled numbers. It can scan barcodes or accept manual entry, then indicates if the card is canceled, expired, or valid.

Highlights
  • TWIC card verification
  • CIN number check
  • Barcode scanning
  • Manual CIN entry
  • Expiration date check
  • Card status indicator
Features
Read full description

Uses the Credential Identification Number (CIN) printed on the back of the TWIC card and compares it against a List of Canceled CIN Numbers (LCCN) to determine if the card has been canceled. The CIN can be entered via a keypad or the barcode can be scanned via the device's camera. If the CIN is found on the list, the display indicates the card is canceled. If the CIN is not on the list, the operator is prompted to check the expiration date printed on the front of the card. If the card is expired, the display indicates to the operator that it is expired. If it has not expired, the display indicates that the card has not been canceled. There is NO electronic read of the card and NO verification of any data stored in the card is performed.

About

iAssign

This app helps monitor worker safety by tracking exposure to dangerous conditions and identifying unsafe behaviors. It uses beacons and tags to automatically log location data and alert users to restricted areas, enhancing worksite visibility and data interpretation.

Highlights
  • Automatic site assignment via beacons
  • Proximity alerts for restricted areas
  • Manual worker check-in/out
  • Gas detection data interpretation
  • Bluetooth-enabled tracking
  • Enhanced worksite visibility
Features
Read full description

Know when and where workers were exposed to dangerous conditions and gain visibility into unsafe worker behaviors using iAssign® Technology and the Ventis® Pro Multi-Gas Monitor. iAssign® Beacons and iAssign® Tags make it easy to automatically track what’s happening on a worksite and interpret gas detection data without the need for wireless connectivity. iAssign Beacons automatically assign site names to Ventis Pro monitors based on proximity, helping safety managers to make sense of datalog information. Using Bluetooth technology, iAssign Beacons provide an added layer of safety and security by alerting users when they have entered restricted or dangerous areas. iAssign Tags allow workers to manually “tap in” and “tap out” of a location which allows anyone reviewing the data to easily see who had the instrument and where the operator was using it, making the information more actionable.

Screenshots

TWIC ADVISR4 screens
iAssign4 screens

Verdict

The call

The clearest difference is rating: iAssign at 5.0 against TWIC ADVISR's 3.7. iAssign also leads on update cadence (every 4 months vs every 8 months). TWIC ADVISR's advantage is ratings volume (9 vs 2) and iOS requirement (11.0 vs 16.0). On price, 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

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

ReceptionRating · Positive reviews · Number of ratings

iAssign holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 9 and 2 respectively.

UpkeepUpdate frequency

TWIC ADVISR ships an update every 8 months, iAssign every 4 months. The most recent releases landed on June 1, 2026 and June 4, 2026 respectively.

Scorecard4 real differences · 6 level
TWIC ADVISR versus iAssign: the parameters behind the verdict, then further details
ParameterTWIC ADVISRiAssign
PriceFreeFree
Rating3.7 (9 ratings)5.0 (2 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings9 — better2
Update frequencyEvery 8 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better16.0
Further details — not scored
Size42 MB25 MB
Age rating4+4+
DeveloperKibong LeeIndustrial Scientific

Customer experience

TWIC ADVISR

All ratings9 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

iAssign

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

TWIC ADVISR

No in-app purchases

None

iAssign

No in-app purchases

Questions

Is TWIC ADVISR free?
TWIC ADVISR is free to download, with no in-app purchases.
Is iAssign free?
iAssign is free to download, with no in-app purchases.
Which has better reviews, TWIC ADVISR or iAssign?
iAssign is rated higher. TWIC ADVISR averages 3.7 out of 5 from 9 ratings, while iAssign averages 5.0 from 2 ratings.
Do TWIC ADVISR or iAssign have ads?
Neither TWIC ADVISR nor iAssign shows ads.
Which is updated more often, TWIC ADVISR or iAssign?
TWIC ADVISR ships an update every 8 months, and iAssign every 4 months. Most recently, TWIC ADVISR was updated on June 1, 2026 and iAssign on June 4, 2026.

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