# Concrete Slab Calculator vs SplitFlap Display

The clearest difference is update cadence: SplitFlap Display at every 3 weeks against Concrete Slab Calculator's every 32 months. Concrete Slab Calculator's advantage is iOS requirement (13.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Concrete Slab Calculator sells 3 in-app purchases, starting at $0.99 per 7 days and SplitFlap Display sells 4 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Concrete Slab Calculator ships an update every 32 months, SplitFlap Display every 3 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Concrete Slab Calculator | SplitFlap Display |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/concrete-slab-calculator/id1555219094/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 2 MB | 50 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [Thomas Richardson](https://appshunter.io/developer/1887851473) |

## What reviewers say

### Concrete Slab Calculator

[App page](https://appshunter.io/ios/app/concrete-slab-calculator/id1555219094)

This tool quickly calculates the area, volume, and weight of concrete slabs in real-time. It supports conversions between imperial and metric units for all key measurements, allowing for custom density input.

**Highlights:** Real-time calculations, Imperial and metric unit conversion, Custom density input, Instantaneous area, volume, and weight results, Supports multiple unit types for width, length, depth, weight, density, area, and volume

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per 7 days |
| Premium Access | $1.99 | per month |
| Premium Access | $5.99 | per year |


### SplitFlap Display

[App page](https://appshunter.io/ios/app/splitflap-display/id6761390167)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SplitFlap Weekly | $0.99 | per 7 days |
| SplitFlap Monthly | $2.49 | per month |
| SplitFlap Yearly | $24.99 | per year |
| SplitFlap Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Concrete Slab Calculator free?

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

### Is SplitFlap Display free?

SplitFlap Display is free to download, with in-app purchases available.

### Do Concrete Slab Calculator or SplitFlap Display have ads?

Neither Concrete Slab Calculator nor SplitFlap Display shows ads.

### Which is updated more often, Concrete Slab Calculator or SplitFlap Display?

Concrete Slab Calculator ships an update every 32 months, and SplitFlap Display every 3 weeks. Most recently, Concrete Slab Calculator was updated on October 24, 2026 and SplitFlap Display on October 22, 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.*