# Carpentry Formulator vs Foundation Footing Calculator

Carpentry Formulator and Foundation Footing Calculator both sit at 3.8 stars, but that hides the real split: 25% of Carpentry Formulator's written reviews are positive against 0% of Foundation Footing Calculator's. Carpentry Formulator also leads on monetization model (free vs free with in-app purchases). Foundation Footing Calculator's advantage is iOS requirement (16.2 vs 18.6). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Carpentry Formulator sells 1 one-off in-app purchase and Foundation Footing Calculator sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Carpentry Formulator holds the better App Store score, 3.8 against 3.6. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews point the same way: 25% of Carpentry Formulator's written reviews are positive against 0% of Foundation Footing Calculator's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Carpentry Formulator | Foundation Footing Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/carpentry-formulator/id305583131/reviews)** | [3.6 (8 ratings)](https://appshunter.io/ios/app/foundation-footing-calculator/id1603432083/reviews) |
| Number of ratings | 4 | **8** |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 8 MB |
| Requires iOS | 18.6 | **16.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) |

## What reviewers say

### Carpentry Formulator

[App page](https://appshunter.io/ios/app/carpentry-formulator/id305583131)

This app provides over 150 formulas and dozens of conversions for carpenters and builders. It calculates loads on walls and headers, material quantities for projects, and dimensions for roofing and stairs. It also includes area and volume calculations for various shapes.

**Highlights:** Load calculations for walls and headers, Material quantity estimation (joists, studs, concrete), Roofing and stair dimension calculations, Area and volume formulas for geometric shapes, Dozens of unit conversion tools, Shareable calculation results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional Features | $2.99 | one-time |


### Foundation Footing Calculator

[App page](https://appshunter.io/ios/app/foundation-footing-calculator/id1603432083)

Instantly calculate concrete foundation requirements, including rebar, excavation volumes, and material costs. Streamline construction planning and estimations with precise, material-specific calculations and smart unit conversions. Ideal for professionals and DIYers alike, it helps reduce errors and speed up project timelines.

**Highlights:** Foundation calculations (strip, slab, diagonal), Rebar quantity and spacing tool, Excavation volume and cost estimator, Smart unit conversion (metric/imperial), Material-specific densities, Offline work capability

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version / monthly | $0.99 | per month |
| Full version / year | $2.99 | per year |
| Remove ADS | $4.99 | one-time |


## Frequently asked questions

### Is Carpentry Formulator free?

Carpentry Formulator is free to download, with in-app purchases available.

### Is Foundation Footing Calculator free?

Foundation Footing Calculator is free to download, with in-app purchases available.

### Which has better reviews, Carpentry Formulator or Foundation Footing Calculator?

Carpentry Formulator is rated higher. Carpentry Formulator averages 3.8 out of 5 from 4 ratings, while Foundation Footing Calculator averages 3.6 from 8 ratings.

### Do Carpentry Formulator or Foundation Footing Calculator have ads?

Neither Carpentry Formulator nor Foundation Footing Calculator shows ads.

### Which is updated more often, Carpentry Formulator or Foundation Footing Calculator?

Carpentry Formulator ships an update every 2 months, and Foundation Footing Calculator every 2 months. Most recently, Carpentry Formulator was updated on October 30, 2026 and Foundation Footing Calculator on October 24, 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.*