# ACI Convention vs CTBUH

The clearest difference is review sentiment: CTBUH at 100% against ACI Convention's 0%. CTBUH also leads on rating (5.0 vs 3.4) and update cadence (every 2 months vs every 5 months). ACI Convention's advantage is ratings volume (5 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

CTBUH holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: ACI Convention has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of ACI Convention's written reviews are positive against 100% of CTBUH's.

ACI Convention ships an update every 5 months, CTBUH every 2 months. The most recent releases landed on June 4, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | ACI Convention | CTBUH |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/aci-convention/id6446288429/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ctbuh/id6593696572/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 54 MB | 9 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [American Concrete Institute](https://appshunter.io/developer/506106957) | [COUNCIL ON TALL BUILDINGS AND URBAN HABITAT](https://appshunter.io/developer/1470487290) |

## What reviewers say

### 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


### CTBUH

[App page](https://appshunter.io/ios/app/ctbuh/id6593696572)

Access the complete program, speaker details, and sponsor information for CTBUH conferences. This app is designed for attendees to enhance their conference experience.

**Highlights:** View full conference program, Access speaker information, See sponsor details, Enhance attendee experience, Conference networking tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ACI Convention free?

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

### Is CTBUH free?

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

### Which has better reviews, ACI Convention or CTBUH?

CTBUH is rated higher. ACI Convention averages 3.4 out of 5 from 5 ratings, while CTBUH averages 5.0 from 1 ratings.

### Do ACI Convention or CTBUH have ads?

Neither ACI Convention nor CTBUH shows ads.

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

ACI Convention ships an update every 5 months, and CTBUH every 2 months. Most recently, ACI Convention was updated on June 4, 2026 and CTBUH on June 5, 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.*