Comparison

UN Number vs AskRail

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

Head to head
About

UN Number

Quickly access essential information for hazardous materials emergencies. This reference guide provides detailed data based on established emergency response cards, usable even without an internet connection. It's designed for rapid retrieval of critical details in critical situations.

Highlights
  • Enter UN numbers via keypad
  • Quick information retrieval
  • Based on ERI-Cards
  • Offline functionality
  • Categorized data display
  • User-friendly interface
Features
Read full description

Hazardous Materials Reference Guide: You can enter the UN number after starting the application using a big and easy to use keypad. Information can thus be retrieved quickly. This product uses ERI-Cards based Information but is not endorsed, certified or otherwise approved in any way by CEFIC. "The CEFIC Emergency Response Intervention Cards (ERICards or ERIC's) provide guidance on initial actions for fire crews when they first arrive at the scene of a chemical transport accident without having appropriate and reliable product specific emergency information at hand". (source: :www.ericards.net) The ERICards are displayed as a table following the seven categories. An internet connection is not needed to display the ERICards. Therefore, the app can be used with an ipod touch or in remote areas without internet connection. ------------------------ Disclaimer: The information displayed is based on the CEFIC-"Emergency Response Intervention Cards" (ERI-Cards). They are available at the Cefic website free of charge. The price you pay for this application is for the user-interface, data-formatting and search function. Cefic has developed ERICards in good faith and has made every effort to ensure the reliability and completeness of the information provided. They are designed as guidelines to be used by fire crews, in the case of an emergency response to a chemical transport accident. The information available on the ERICards should be applied on the basis of sound judgement, taking into consideration the particular circumstances of each accident and the specialised equipment available. Consequently, this information may not be sufficient or appropriate in all cases and the Cefic and 2denker will not be liable for the results of any misinterpretation or misuse of this information by fire crews or any other persons. Tags: Hazardous Materials Reference

About

AskRail

This app provides hazardous materials safety information for first responders dealing with rail incidents. It allows authorized personnel to query railcar contents and offers critical data for emergency response. Access to advanced features requires verification and railroad sponsorship.

Highlights
  • Hazardous materials safety information
  • Rail incident support
  • Query railcar contents
  • Emergency response data
  • First responder tool
Features
Read full description

The AskRail app is a hazardous materials safety tool for first responders who are first on scene or directly support the first on scene in the event of a rail incident. Access to certain features, including the ability to query railcar contents based on an equipment number, is restricted to authorized personnel. To obtain authorization to use the restricted features, you must assert that you are a first responder, provide information about your emergency response agency, and identify a supervisor who can attest to your first responder duties. You also must obtain sponsorship from a Class I railroad. This process may take up to several weeks. AskRail is a collaborative effort among all North American Class I railroads, the Association of American Railroads, Railinc Corp., and the Transportation Technology Center, Inc. For more information about AskRail please visit: www.askrail.us.

Screenshots

UN Number4 screens
AskRail4 screens

Verdict

The call

The clearest difference is rating: UN Number at 4.7 against AskRail's 4.1. UN Number also leads on iOS requirement (11.0 vs 16.0). AskRail's advantage is in-app purchases (none vs 5). On price, review sentiment, ratings volume and update cadence 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. UN Number sells 5 in-app purchases, starting at $1.99 per month. AskRail asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

UN Number holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 55 and 37 respectively. Written reviews point the same way: 63% of UN Number's written reviews are positive against 58% of AskRail's.

UpkeepUpdate frequency

UN Number ships an update every 3 months, AskRail every 4 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
UN Number versus AskRail: the parameters behind the verdict, then further details
ParameterUN NumberAskRail
PriceFreeFree
Rating4.7 (55 ratings) — better4.1 (37 ratings)
Positive reviews63.0% of reviews — better58.3% of reviews
Number of ratings55 — better37
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better16.0
Further details — not scored
Size44 MB44 MB
Age rating4+12+
DeveloperZWEIDENKER Holding GmbHAssociation of American Railroads

Customer experience

UN Number

All ratings54 ratings
Positive92.6%
Neutral1.9%
Negative5.6%
Written reviews27 reviews
Positive63.0%
Neutral7.4%
Negative29.6%

AskRail

All ratings37 ratings
Positive78.4%
Neutral0.0%
Negative21.6%
Written reviews12 reviews
Positive58.3%
Neutral0.0%
Negative41.7%

In-app purchases

5 purchases

UN Number

Subscriptions2
  • UN⁺ Monthly14 Days trial$1.991 Month
  • UN⁺ Yearly14 Days trial$17.991 Year
One-time3
  • ADR Label$0.99
  • Hazard Diamond$0.99
  • Hommel$2.99
None

AskRail

No in-app purchases

Questions

Is UN Number free?
UN Number is free to download, with in-app purchases available.
Is AskRail free?
AskRail is free to download, with no in-app purchases.
Which has better reviews, UN Number or AskRail?
UN Number is rated higher. UN Number averages 4.7 out of 5 from 55 ratings, while AskRail averages 4.1 from 37 ratings.
Do UN Number or AskRail have ads?
Neither UN Number nor AskRail shows ads.
Which is updated more often, UN Number or AskRail?
UN Number ships an update every 3 months, and AskRail every 4 months. Most recently, UN Number was updated on October 23, 2026 and AskRail on October 24, 2026.

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