Comparison

Chemdata vs AskRail

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

Head to head
About

Chemdata

Access a comprehensive chemical hazard database offline for incident management. Provides detailed information on over 62,000 chemicals, including safety, transport, and emergency response guidance. Offers multilingual support and regular updates.

Highlights
  • Offline chemical database access
  • Hazardous chemical identification
  • Incident command support
  • Transport classification
  • Personal Protective Equipment (PPE) guidance
  • Multilingual support (EN, NL, FR, DE, ES)
Features
Read full description

If your organisation handles chemicals and you need to know how to manage their risks, Pocket Chemdata® is simply a 'must have'. Pocket Chemdata is a reliable, interactive database subscription service providing access to over 62,000 documents and more than 186,000 different chemical names including pure and trade-name chemicals. Pocket Chemdata provides clear information including how to manage their hazardous affects. PRODUCT BENEFITS: •Simple and easy-to-use chemical and chemical hazard identification •Incident commanders can access chemical information from anywhere in the world (no internet connection required) •Helps to mitigate the consequences of incidents •Regularly updated database, so users always have the latest information •Information is installed on the device, so an internet connection is not required to access data •Provides the same clear concise advice as the standard Chemdata® FEATURES: •Powerful search functionality for efficient chemical identification •UN number, ADR HIN, EAC codes •Personal Protective Equipment (PPE) requirements •Physical form information •Transport classification •Chemical hazard information (only available to subscribers) •Reactivity guidance (only available to subscribers) •Fire, decontamination and first aid advice (only available to subscribers) •Precautions information including large and small spill advice (only available to subscribers) •Environmental data (only available to subscribers) •Physical properties (only available to subscribers) •Add private notes and comments against chemical records (only available to subscribers) •Sync private notes and comments with your organisation’s central Chemdata solution (only available to subscribers) Designed and continuously maintained by emergency responders from Ricardo's NCEC, one of the world's leading chemical emergency centres, Pocket Chemdata is one of the most trusted sources of chemical information available. Data is updated approximately twice a year to ensure responders have access to up-to-date information. Pocket Chemdata is used globally by organisations, including fire and other emergency services, to provide invaluable and timely advice in the event of chemical spillages, fires and contamination incidents. Trust Pocket Chemdata for clear and concise information on more than 62,000 substances, at your fingertips. The free app provides access to one full record, to demonstrate the full capabilities of the system, this can be found by searching for the ‘Chlorine’ record or document number 5. LANGUAGES As well as English, Pocket Chemdata includes Dutch, French, German and Spanish translations - all in the one app. SUPPORT We would really like to know what you think about Pocket Chemdata, so please visit www.chemdata.co.uk to provide feedback or ask questions. Alternatively, you can email us at chemdata@ricardo.com. Chemdata® and Pocket Chemdata® have been developed for NCEC by Ark Software Ltd and Payot Ltd.

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

Chemdata3 screens
AskRail4 screens

Verdict

The call

The clearest difference is update cadence: AskRail at every 4 months against Chemdata's every 19 months. Chemdata's advantage is review sentiment (67% vs 58%) and iOS requirement (14.0 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.

UpkeepUpdate frequency

Chemdata ships an update every 19 months, AskRail every 4 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 7 level
Chemdata versus AskRail: the parameters behind the verdict, then further details
ParameterChemdataAskRail
PriceFreeFree
Rating—4.1 (37 ratings) — better
Positive reviews66.7% of reviews — better58.3% of reviews
Number of ratings—37 — better
Update frequencyEvery 19 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.0
Further details — not scored
Size49 MB44 MB
Age rating12+12+
DeveloperRicardo-AEA ltdAssociation of American Railroads

Customer experience

Chemdata

Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

AskRail

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

In-app purchases

None

Chemdata

No in-app purchases

None

AskRail

No in-app purchases

Questions

Is Chemdata free?
Chemdata is free to download, with no in-app purchases.
Is AskRail free?
AskRail is free to download, with no in-app purchases.
Do Chemdata or AskRail have ads?
Neither Chemdata nor AskRail shows ads.
Which is updated more often, Chemdata or AskRail?
Chemdata ships an update every 19 months, and AskRail every 4 months. Most recently, Chemdata was updated on November 1, 2026 and AskRail on November 2, 2026.

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