# ChemAlert vs EMS.SDS

The clearest difference is rating: EMS.SDS at 5.0 against ChemAlert's 3.0. EMS.SDS also leads on review sentiment (50% vs 33%) and update cadence (every 6 weeks vs every 4 months). ChemAlert's advantage is ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EMS.SDS holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 33% of ChemAlert's written reviews are positive against 50% of EMS.SDS's.

ChemAlert ships an update every 4 months, EMS.SDS every 6 weeks. Both last shipped on November 1, 2026.

## The numbers

| Metric | ChemAlert | EMS.SDS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/chemalert/id427935573/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/emssds-ghs/id791136923/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 33.3% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 106 MB | 2 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Risk Management Technologies Pty Ltd](https://appshunter.io/developer/427935576) | [SFS Chemical Safety Inc.](https://appshunter.io/developer/521270523) |

## What reviewers say

### ChemAlert

[App page](https://appshunter.io/ios/app/chemalert/id427935573)

Manage chemical safety data sheets, compliance, and organizational chemical footprints. This mobile app integrates with the main system, allowing users to view and update stock inventory, scan barcodes, and upload pictures on the go. It also offers offline access to SDSs and product information for remote use.

**Highlights:** Manage SDSs and chemical footprint, View and update stock inventory, Scan barcodes and QR codes, Upload product images, Offline SDS access, Real-time hazard and risk insights

**In-app purchases:** none


### EMS.SDS

[App page](https://appshunter.io/ios/app/emssds-ghs/id791136923)

This application supports chemical safety regulations by providing access to GHS-compliant labels and Safety Data Sheets. It allows users to search a comprehensive database by substance name, vendor, or CAS number, and access information offline.

**Highlights:** GHS-compliant chemical labels, Safety Data Sheets (SDS), Searchable chemical database, Offline data access, Supports GHS regulations, Demo mode and free account registration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ChemAlert free?

ChemAlert is free to download, with no in-app purchases.

### Is EMS.SDS free?

EMS.SDS is free to download, with no in-app purchases.

### Which has better reviews, ChemAlert or EMS.SDS?

EMS.SDS is rated higher. ChemAlert averages 3.0 out of 5 from 3 ratings, while EMS.SDS averages 5.0 from 1 ratings.

### Do ChemAlert or EMS.SDS have ads?

Neither ChemAlert nor EMS.SDS shows ads.

### Which is updated more often, ChemAlert or EMS.SDS?

ChemAlert ships an update every 4 months, and EMS.SDS every 6 weeks. Most recently, ChemAlert was updated on November 1, 2026 and EMS.SDS on November 1, 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.*