# Queue App vs Concrete Calculator Tools

The clearest difference is in-app purchases: Queue App at none against Concrete Calculator Tools's 4. Queue App also leads on ads (none vs shown) and iOS requirement (13.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Concrete Calculator Tools sells 4 in-app purchases, starting at $3.99 per 7 days. Queue App asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Queue App | Concrete Calculator Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (51 ratings)](https://appshunter.io/ios/app/concrete-calculator-tools/id6741408557/reviews)** |
| Number of ratings | — | **51** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 72 MB | 39 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hossam Moustafa](https://appshunter.io/developer/1756090862) | [Peth Pty Ltd](https://appshunter.io/developer/662891650) |

## What reviewers say

### Queue App

[App page](https://appshunter.io/ios/app/queue-app/id6523430643)

**Features:** macOS Compatibility

**In-app purchases:** none


### Concrete Calculator Tools

[App page](https://appshunter.io/ios/app/concrete-calculator-tools/id6741408557)

This app simplifies concrete volume calculations for professionals and DIYers. It offers flexible unit support and a free rectangular slab calculator, with advanced features available via subscription.

**Highlights:** Flexible unit support (metric/imperial), Rectangular slab calculator (free), Circular slab calculator, Circular column calculator, Post hole calculator, Slab from area calculator

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $3.99 | per 7 days |
| Monthly Pro | $5.99 | per month |
| Annual Pro | $19.99 | per year |
| One-Time Purchase | $85.00 | one-time |


## Frequently asked questions

### Is Queue App free?

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

### Is Concrete Calculator Tools free?

Concrete Calculator Tools is free to download, with in-app purchases available.

### Do Queue App or Concrete Calculator Tools have ads?

Concrete Calculator Tools shows ads; Queue App does not.

### Which is updated more often, Queue App or Concrete Calculator Tools?

Queue App ships an update every 2 months, and Concrete Calculator Tools every 2 months. Most recently, Queue App was updated on October 6, 2026 and Concrete Calculator Tools on September 29, 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.*