# ACI Convention vs Sika SandApp

ACI Convention and Sika SandApp 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.

ACI Convention ships an update every 5 months, Sika SandApp every 3 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ACI Convention | Sika SandApp |
| --- | --- | --- |
| 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 5 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 54 MB | 44 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [American Concrete Institute](https://appshunter.io/developer/506106957) | [Sika Informationssysteme AG](https://appshunter.io/developer/1487602064) |

## 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


### Sika SandApp

[App page](https://appshunter.io/ios/app/sika-sandapp/id6463419232)

**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 Sika SandApp free?

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

### Do ACI Convention or Sika SandApp have ads?

Neither ACI Convention nor Sika SandApp shows ads.

### Which is updated more often, ACI Convention or Sika SandApp?

ACI Convention ships an update every 5 months, and Sika SandApp every 3 months. Most recently, ACI Convention was updated on October 24, 2026 and Sika SandApp on October 27, 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.*