# UN Number vs DOT Chart 17

The clearest difference is review sentiment: UN Number at 63% against DOT Chart 17's 0%. UN Number also leads on rating (4.7 vs 2.3) and update cadence (every 3 months vs every 10 months). DOT Chart 17's advantage is in-app purchases (none vs 5). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. UN Number sells 5 in-app purchases, starting at $1.99 per month. DOT Chart 17 asks for nothing beyond the download.

UN Number holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: UN Number has 54 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 63% of UN Number's written reviews are positive against 0% of DOT Chart 17's.

UN Number ships an update every 3 months, DOT Chart 17 every 10 months. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | UN Number | DOT Chart 17 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (54 ratings)](https://appshunter.io/ios/app/un-number/id307373793/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/dot-chart-17/id1245251292/reviews) |
| Number of ratings | **54** | 3 |
| Positive reviews | **63.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 44 MB | 20 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZWEIDENKER Holding GmbH](https://appshunter.io/developer/307356444) | [Pipeline and Hazardous Materials Safety Administration](https://appshunter.io/developer/954888820) |

## What reviewers say

### UN Number

[App page](https://appshunter.io/ios/app/un-number/id307373793)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UN⁺ Monthly | $1.99 | per month |
| UN⁺ Yearly | $17.99 | per year |
| ADR Label | $0.99 | one-time |
| Hazard Diamond | $0.99 | one-time |
| Hommel | $2.99 | one-time |


### DOT Chart 17

[App page](https://appshunter.io/ios/app/dot-chart-17/id1245251292)

Access a full-color display of hazardous materials markings, labels, and placards. This app provides quick visual information and regulatory citations for shippers and carriers. It serves as a general guidance tool for hazardous materials regulations.

**Highlights:** Full-color display of markings, labels, and placards, Access to Hazardous Materials Regulations (HMR) citations, Quick visual information for shippers and carriers, Mobile access to DOT Chart-17, Guidance on 49 CFR Parts 171-180

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UN Number free?

UN Number is free to download, with in-app purchases available.

### Is DOT Chart 17 free?

DOT Chart 17 is free to download, with no in-app purchases.

### Which has better reviews, UN Number or DOT Chart 17?

UN Number is rated higher. UN Number averages 4.7 out of 5 from 54 ratings, while DOT Chart 17 averages 2.3 from 3 ratings.

### Do UN Number or DOT Chart 17 have ads?

Neither UN Number nor DOT Chart 17 shows ads.

### Which is updated more often, UN Number or DOT Chart 17?

UN Number ships an update every 3 months, and DOT Chart 17 every 10 months. Most recently, UN Number was updated on September 22, 2026 and DOT Chart 17 on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*