# EMS.SDS vs US SDS

EMS.SDS and US SDS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

EMS.SDS ships an update every 6 weeks, US SDS every 2 months. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | EMS.SDS | US SDS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/emssds-ghs/id791136923/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 2 MB | 81 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [SFS Chemical Safety Inc.](https://appshunter.io/developer/521270523) | [US SDS INC.](https://appshunter.io/developer/1560031208) |

## What reviewers say

### 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


### US SDS

[App page](https://appshunter.io/ios/app/us-sds/id1560031206)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is EMS.SDS free?

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

### Is US SDS free?

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

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

Neither EMS.SDS nor US SDS shows ads.

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

EMS.SDS ships an update every 6 weeks, and US SDS every 2 months. Most recently, EMS.SDS was updated on October 16, 2026 and US SDS on October 24, 2026.

---

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