# NRMCA vs Slabstack

The clearest difference is update cadence: Slabstack at fortnightly against NRMCA's every 6 months. Slabstack also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NRMCA ships an update every 6 months, Slabstack fortnightly. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | NRMCA | Slabstack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/slabstack/id6746656983/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 65 MB | 71 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NATIONAL READY-MIXED CONCRETE ASSOCIATION](https://appshunter.io/developer/1435678896) | [SLABSTACK SOFTWARE, INC.](https://appshunter.io/developer/1817669754) |

## What reviewers say

### NRMCA

[App page](https://appshunter.io/ios/app/nrmca/id1435678897)

**Features:** macOS Compatibility

**In-app purchases:** none


### Slabstack

[App page](https://appshunter.io/ios/app/slabstack/id6746656983)

This platform streamlines sales and business management for concrete, aggregates, and asphalt producers. It offers a comprehensive solution designed to optimize operations within the construction materials industry.

**Highlights:** Sales management, Business management, Concrete production tools, Aggregate production tools, Asphalt production tools, Industry-specific platform

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NRMCA free?

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

### Is Slabstack free?

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

### Do NRMCA or Slabstack have ads?

Neither NRMCA nor Slabstack shows ads.

### Which is updated more often, NRMCA or Slabstack?

NRMCA ships an update every 6 months, and Slabstack fortnightly. Most recently, NRMCA was updated on September 17, 2026 and Slabstack on September 13, 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.*