# NRMCA vs ACI Convention

NRMCA and ACI Convention are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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.

NRMCA ships an update every 6 months, ACI Convention every 5 months. The most recent releases landed on September 17, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | NRMCA | ACI Convention |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.4 (5 ratings)](https://appshunter.io/ios/app/aci-convention/id6446288429/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 65 MB | 54 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [NATIONAL READY-MIXED CONCRETE ASSOCIATION](https://appshunter.io/developer/1435678896) | [American Concrete Institute](https://appshunter.io/developer/506106957) |

## What reviewers say

### NRMCA

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ACI Convention

[App page](https://appshunter.io/ios/app/aci-convention/id6446288429)

This app connects professionals in the concrete industry for networking and education. It facilitates learning about the latest research, case studies, and best practices, while also providing a platform for input on industry codes and specifications. Attendees can earn Professional Development Hours and meet global industry leaders.

**Highlights:** Networking events, Educational sessions, Professional Development Hours, Industry code input, Committee meetings, Latest research access

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is NRMCA free?

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

### Is ACI Convention free?

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

### Do NRMCA or ACI Convention have ads?

Neither NRMCA nor ACI Convention shows ads.

### Which is updated more often, NRMCA or ACI Convention?

NRMCA ships an update every 6 months, and ACI Convention every 5 months. Most recently, NRMCA was updated on September 17, 2026 and ACI Convention on June 4, 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.*