NPC Pro Reviews

NPC Pro Reviews

 Published by on 2026-02-15

🏷️ About: NPC Pro LSI Calculator & Startup Guide – The Ultimate Water Chemistry Tool for Pool Professionals! Developed by the National Plasterers Council (NPC), the NPC Pro LSI Calculator & Startup Guide is the essential app for pool professionals, technicians, and service providers. Whether you’re calculating the Langelier Saturation Index (LSI) to ensure balanced water chemistry or following proper startup procedures for new plas.

 Rating 5.0/5
 Safety Score: 33.7/100
 
 Legitimacy Score: 33.7/100

Overall Customer Experience 😎


🤬 Negative experience
66.3%

😎 Positive experience
33.7%

🫥 Neutral
0.0%

~ from Justuseapp.com NLP analysis of 1 combined software reviews.

Is NPC Pro Safe?
NPC Pro appears generally safe, but use with caution.
33.7/100

  Safety Analysis »»

Is NPC Pro Legit?
NPC Pro appears legitimate, though exercise caution.
33.7/100

⚠️ Share your Experience & Warn Others


Read 7 Customer Service Reviews 😠💢

5.0 out of 5
Doesn’t work on iPhone

Input boxes are stacked on top of each other. Can’t use

Not for testing pools!

NPCPro is not designed to calculate any sort of pool treatment ( not like google recommends), it only displays the end condition of your water chemistry based on the input values your give it.
It wides not tell you chemicals to add to bring your pool back to a (clear water) state.

Great App

I own a pool service company in AZ and I use NPCPro all the time to get my LSI readings at each pool. Even though it doesn’t give you suggested amounts of chems to use to adjust the numbers that’s ok for now, although I’d like to see that calculator on here someday. It’s dead in accurate every time.

Now good to go on iOS 12

With the latest update NPCPro is working as advertised. Back in business, thanks! I will add that the arrow graphic at the top is pretty much unreadable with way too small fonts. But the rest of NPCPro is good.

⚠️ Share your Experience & Warn Others »
Great resource for all in swimming pool industry!

This is such a great app and resource. LSI calculator, Start up instructions, NPC Technical Library and downloadable files & start up card. Get all the expertise of the National Plasterers Council at your fingertips with ease!

Great new app

The new app that NPC just put out is really great. So many features. Thank you NPC. Love the calculator and podcasts.

My bad.

App great



Is NPC Pro Safe? 🙏

NPC Pro appears generally safe, but use with caution. JustUseApp Safety Score for NPC Pro is 33.7/100.
This assessment is based on our NLP analysis of 1 user reviews. Combined with the app store average rating of 5.0/5.


Is NPC Pro Legit? 💯

NPC Pro appears legitimate, though exercise caution. Our NLP models processed user feedback to estimate legitimacy. JustUseApp Legitimacy Score for NPC Pro is 33.7/100 .
This conclusion is based on analysis of 1 user reviews.




How was your experience with NPC Pro? Post a Review




Features

Whether you’re calculating the Langelier Saturation Index (LSI) to ensure balanced water chemistry or following proper startup procedures for new plaster finishes, this app simplifies the process with accuracy and ease.

Developed by the National Plasterers Council (NPC), the NPC Pro LSI Calculator & Startup Guide is the essential app for pool professionals, technicians, and service providers.

The NPC will collaborate with other associations and serve the industry through research, education, promotion, and certification of all segments of the pool industry including pool owners, the pool service providers, plasterers, manufacturers, specifiers, remodelers, architects, and builders.

- Professional-Grade Accuracy – Designed for pool contractors, service techs, and water chemistry experts.

The National Plasterers Council will continue to be the utmost authority in the preparation, application, materials, start-ups and preservation of cementitious pool interior finishes.

  Contact Support
Developer:
National Plasters Council, Inc