Process & Control Engineering vs PSSI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Process & Control Engineering
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Process & Control Engineering is a leading publication and have been serving the process industries for 45 years. Our readers are engineers, managers and senior executives who have a purchasing and/or specifying responsibility for control, instrumentation and process products, equipment, systems and services. Our readers work within these industries: Energy & Renewables, Food & Beverage, HVAC, Industrial, Mining, Oil & Gas, Petrochemical & Chemical, Pharmaceutical, Power Generation & Nuclear, Paper & Pulp, Subsea & Offshore, Water & Waste Water We have a print & digitally-enabled, multi-channel distribution network – reaching up to 38,000 monthly readers and followers.
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.
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Verdict
The clearest difference is update cadence: PSSI at every 2 days against Process & Control Engineering's every 7 months. 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.
Process & Control Engineering ships an update every 7 months, PSSI every 2 days. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Process & Control Engineering | PSSI |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 7 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 31 MB | 135 MB |
| Age rating | 4+ | 17+ |
| Developer | Datateam Business Media Ltd | Evan Richardson |
In-app purchases
Process & Control Engineering
No in-app purchases
PSSI
No in-app purchases
Questions
Is Process & Control Engineering free?
Is PSSI free?
Do Process & Control Engineering or PSSI have ads?
Which is updated more often, Process & Control Engineering or PSSI?
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