NCT vs CSIA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NCT
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The NCT Group is a global distribution & trading company in plastic raw materials with offices and operations in Europe, Middle East, Africa, Asia and South America. Since 2008 NCT is in partnership with Itochu Corporation Japan. Our joint network of offices create a world-wide coverage to serve our suppliers and customers in the best possible and more efficient way. The network structure enables each individual branch to operate in line with the latest short-term trends within world and regional markets. NCT’s strategy is to generate added value to the chain between producers and end-users of commodity polymers. NCT is an ISO Certified Company who trades in polyolefins, polystyrene, pet, pvc and other plastic raw materials.
CSIA
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Stay up to date with the CSIA! The CSIA app allows users to register for classes, check their CEUs, and pay invoices. You can also access your mobile certification card, purchase study materials, and even pick up some CSIA gear!
Screenshots
Verdict
The clearest difference is update cadence: CSIA at every 4 months against NCT's every 12 months. NCT's advantage is iOS requirement (10.0 vs 14.0). 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.
NCT ships an update every 12 months, CSIA every 4 months. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.
| Parameter | NCT | CSIA |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 12 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 10.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 144 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | NCT Holland B.V. | The Chimney Safety Institute of America |
In-app purchases
NCT
No in-app purchases
CSIA
No in-app purchases
