oCFR vs TheHazMatApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
oCFR
Access U.S. federal regulations for the safe transportation of hazardous materials and pipeline safety. Covers regulations for classifying, handling, and packaging materials by various transport modes, as well as pipeline facility safety standards.
- Hazardous Materials Regulations (HMR)
- Pipeline Safety Regulations
- 49 CFR Parts 100-180
- 49 CFR Parts 190-199
- Covers highway, rail, aircraft, and vessel transport
- Includes design, construction, operation, and maintenance standards
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The U.S. DOT. Pipeline and Hazardous Materials Safety Administration’s (PHMSA) mission is to protect people and the environment by advancing the safe transportation of energy and other hazardous materials that are essential to our daily lives. This app provides online access to PHMSA’s Hazardous Materials Regulations (HMR) in 49 CFR parts 100-180 for the classifying, handling and packaging of hazardous materials by highway, rail, aircraft, and vessel. This app also provides online access to PHMSA’s Pipeline Safety Regulations in 49 CFR parts 190-199, which provide the Federal minimum safety standards for the design, construction, operation and maintenance, and spill response planning for pipeline and LNG facilities involved in the transportation of natural gas and hazardous liquids within the United States.
TheHazMatApp
Access a comprehensive database of hazardous materials and their assigned building and fire code hazard classifications. Quickly look up chemicals by name or CAS number to determine their specific hazard status.
- Hazardous materials database
- Building and fire code classifications
- Lookup by Chemical Name
- Lookup by CAS Number
- Expert-assigned classifications
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TheHazMatApp provides engineers, consultants, building owners, and inspectors a database of hazardous materials that have been assigned building and fire code hazard classifications by experts and industry professionals. Lookup various chemicals by Chemical Name or CAS Number to determine their hazard classification.
Screenshots
Verdict
The clearest difference is ads: oCFR at none against TheHazMatApp's shown. oCFR also leads on monetization model (free vs ad-supported) and ratings volume (9 vs 3). TheHazMatApp's advantage is update cadence (every 6 weeks vs every 6 months). On price, rating, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 3.7 for oCFR against 3.7 for TheHazMatApp. Both are backed by a comparable volume of ratings — 9 and 3 respectively.
oCFR ships an update every 6 months, TheHazMatApp every 6 weeks. The most recent releases landed on September 22, 2026 and June 28, 2026 respectively.
| Parameter | oCFR | TheHazMatApp |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (9 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 9 — better | 3 |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 70 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Pipeline and Hazardous Materials Safety Administration | HazClass, INC. |
Customer experience
oCFR
TheHazMatApp
In-app purchases
oCFR
No in-app purchases
TheHazMatApp
No in-app purchases
