UN Number vs Chemdata
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Enter UN numbers via keypad
- Quick information retrieval
- Based on ERI-Cards
- Offline functionality
- Categorized data display
- User-friendly interface
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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
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.
- Offline chemical database access
- Hazardous chemical identification
- Incident command support
- Transport classification
- Personal Protective Equipment (PPE) guidance
- Multilingual support (EN, NL, FR, DE, ES)
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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.
Screenshots
Verdict
The clearest difference is in-app purchases: Chemdata at none against UN Number's 5. UN Number's advantage is update cadence (every 3 months vs every 19 months) and iOS requirement (11.0 vs 14.0). On price, review sentiment, ads and device support 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
Both are free to download. UN Number sells 5 in-app purchases, starting at $1.99 per month. Chemdata asks for nothing beyond the download.
UN Number ships an update every 3 months, Chemdata every 19 months. The most recent releases landed on September 28, 2026 and June 5, 2026 respectively.
| Parameter | UN Number | Chemdata |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (54 ratings) — better | — |
| Positive reviews | 63.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 54 — better | — |
| Update frequency | Every 3 months — better | Every 19 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 44 MB | 49 MB |
| Age rating | 4+ | 12+ |
| Developer | ZWEIDENKER Holding GmbH | Ricardo-AEA ltd |
Customer experience
UN Number
Chemdata
In-app purchases
UN Number
- UN⁺ Monthly14 Days trial$1.991 Month
- UN⁺ Yearly14 Days trial$17.991 Year
- ADR Label$0.99
- Hazard Diamond$0.99
- Hommel$2.99
Chemdata
No in-app purchases
Questions
Is UN Number free?
Is Chemdata free?
Do UN Number or Chemdata have ads?
Which is updated more often, UN Number or Chemdata?
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