# SIGMASMITH vs myNPCA

The clearest difference is in-app purchases: myNPCA at none against SIGMASMITH's 3. SIGMASMITH's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 10 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SIGMASMITH sells 3 one-off in-app purchases. myNPCA asks for nothing beyond the download.

SIGMASMITH ships an update every 3 weeks, myNPCA every 10 months. The most recent releases landed on June 24, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | SIGMASMITH | myNPCA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sigmasmith/id6475358569/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Monetization | Free | — |
| Size | 64 MB | 51 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Richard Valois](https://appshunter.io/developer/1724050357) | [National Precast Concrete Association, Inc.](https://appshunter.io/developer/542491162) |

## What reviewers say

### SIGMASMITH

[App page](https://appshunter.io/ios/app/sigmasmith/id6475358569)

This toolkit helps businesses optimize operations by calculating labor costs, tracking error frequency with Pareto charts, and conducting time studies with line balance charts. It provides data-driven insights to enhance productivity and manage resources effectively.

**Highlights:** Efficiency Calculator for labor hours and cost per unit, Error Frequency Tracker with Pareto charts, Time Study tool with line balance charts, Takt Time alignment for demand matching, Data-driven decision making for operations

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Premium For Life | $0.99 | one-time |
| Get Professional For Month | $4.99 | one-time |
| Get Yearly Subscription | $44.99 | one-time |


### myNPCA

[App page](https://appshunter.io/ios/app/mynpca/id6746932988)

**In-app purchases:** none


## Frequently asked questions

### Is SIGMASMITH free?

SIGMASMITH is free to download, with in-app purchases available.

### Is myNPCA free?

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

### Do SIGMASMITH or myNPCA have ads?

myNPCA shows ads; SIGMASMITH does not.

### Which is updated more often, SIGMASMITH or myNPCA?

SIGMASMITH ships an update every 3 weeks, and myNPCA every 10 months. Most recently, SIGMASMITH was updated on June 24, 2026 and myNPCA on September 9, 2026.

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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.*