# NPC Pro vs Clyr Hub

NPC Pro and Clyr Hub are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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.

## The numbers

| Metric | NPC Pro | Clyr Hub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/npc-pro/id1273077384/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | — |
| Monetization | Free | — |
| Size | 84 MB | 22 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [National Plasters Council, Inc](https://appshunter.io/developer/1273077383) | [A I KETO INC](https://appshunter.io/developer/1452358531) |

## What reviewers say

### NPC Pro

[App page](https://appshunter.io/ios/app/npc-pro/id1273077384)

This app helps pool professionals manage water chemistry and follow startup procedures for plaster finishes. It offers an LSI calculator, water chemistry recommendations, and step-by-step guides for maintaining pool surfaces. Connect with experts and access resources to ensure balanced water and durable finishes.

**Highlights:** LSI Calculator for water balance, Water chemistry recommendations, Plaster startup procedures guide, Easy data input for instant results, Professional-grade accuracy, Ask the Expert feature, Access to podcasts and technical resources

**Features:** macOS Compatibility

**In-app purchases:** none


### Clyr Hub

[App page](https://appshunter.io/ios/app/clyr-hub/id6752721571)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NPC Pro free?

NPC Pro is free to download, with no in-app purchases.

### Is Clyr Hub free?

Clyr Hub is free to download, with no in-app purchases.

### Do NPC Pro or Clyr Hub have ads?

Neither NPC Pro nor Clyr Hub shows ads.

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