EMS.Inventory vs PSSI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EMS.Inventory
This application helps manage chemical inventory from purchase to disposal. It streamlines tracking, purchasing, distribution, sharing, and disposal processes when used with its web counterpart.
- Chemical inventory tracking
- Purchase management
- Distribution tracking
- Disposal management
- Integration with web application
- Simplified chemical data management
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EMS.Inventory is a Chemical Safety Software app that is being used to track a chemical inventory from purchase through disposal. Used along Chemical Safety's EMS web application, it reduces the time required to keep accurate information, simplifies chemical purchases, distribution, sharing and disposal.
PSSI
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Phase Separation Science is a NELAP accredited full service environmental laboratory located in Baltimore, Maryland specializing in expedited turnaround times. Under the same ownership since 1989, our management cadre and laboratory personnel collectively boast an unparalleled wealth of experience in the domain of quantitative analysis within instrumental chemistry. Our proficiency stands as a benchmark of excellence, reflecting decades of dedicated method refinement.
Screenshots
Verdict
The clearest difference is update cadence: PSSI at every 2 days against EMS.Inventory's monthly. EMS.Inventory's advantage is iOS requirement (15.6 vs 17.0). On price, ads, 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.
EMS.Inventory ships an update monthly, PSSI every 2 days. The most recent releases landed on October 8, 2026 and September 25, 2026 respectively.
| Parameter | EMS.Inventory | PSSI |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 135 MB |
| Age rating | 4+ | 17+ |
| Developer | SFS Chemical Safety Inc. | Evan Richardson |
In-app purchases
EMS.Inventory
No in-app purchases
PSSI
No in-app purchases
