# シンプル建築単位変換 vs Construction Calculator

The clearest difference is in-app purchases: シンプル建築単位変換 at none against Construction Calculator's 15. シンプル建築単位変換 also leads on iOS requirement (16.0 vs 18.0). Construction Calculator's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Construction Calculator sells 15 in-app purchases, starting at $2.99 per 7 days. シンプル建築単位変換 asks for nothing beyond the download.

シンプル建築単位変換 ships an update every 2 months, Construction Calculator every 2 weeks. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | シンプル建築単位変換 | Construction Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (24 ratings)](https://appshunter.io/ios/app/construction-calculator-pro/id6753908597/reviews)** |
| Number of ratings | — | **24** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 62 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [S K S, K.K.](https://appshunter.io/developer/1703432739) | [Shapkin Dev](https://appshunter.io/developer/1845645309) |

## What reviewers say

### シンプル建築単位変換

[App page](https://appshunter.io/ios/app/id6468021875)

**Features:** macOS Compatibility

**In-app purchases:** none


### Construction Calculator

[App page](https://appshunter.io/ios/app/construction-calculator-pro/id6753908597)

This app provides a comprehensive suite of tools for construction professionals and DIY enthusiasts. It offers precise calculations for decking, roofing, stairs, concrete, and more, with support for both metric and imperial units. Designed for jobsite use, it works offline and provides clear visuals for accurate on-site measurements.

**Highlights:** Decking and flooring calculations, Roofing material and coverage estimators, Stair and stringer rise/run calculations, Concrete, asphalt, and gravel volume estimators, Slope, pitch, and angle framing helpers, Unit converter with mixed-unit support, Offline functionality

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Carpenter PRO - Weekly | $2.99 | per 7 days |
| Full Access — Weekly | $5.99 | per 7 days |
| Carpenter PRO — Annual | $19.99 | per year |
| Full Access — Annual | $39.99 | per year |
| RL Level & Benchmark Calculator | $3.99 | one-time |
| Gravel Volume Calculator | $3.99 | one-time |
| Stair Stringer & Rise Run Calc | $3.99 | one-time |
| Soil Excavation Volume Calculator | $3.99 | one-time |
| Asphalt Tonnage Calculator | $3.99 | one-time |
| Right Triangle & Pitch Calculator | $3.99 | one-time |
| Running Measurements Calculator | $3.99 | one-time |
| Unit Converter: Feet & Metric | $3.99 | one-time |
| Paint Area Coverage Estimator | $3.99 | one-time |
| Lifetime Access | $39.99 | one-time |
| Lifetime Access | $79.99 | one-time |


## Frequently asked questions

### Is シンプル建築単位変換 free?

シンプル建築単位変換 is free to download, with no in-app purchases.

### Is Construction Calculator free?

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

### Do シンプル建築単位変換 or Construction Calculator have ads?

シンプル建築単位変換 shows ads; Construction Calculator does not.

### Which is updated more often, シンプル建築単位変換 or Construction Calculator?

シンプル建築単位変換 ships an update every 2 months, and Construction Calculator every 2 weeks. Most recently, シンプル建築単位変換 was updated on October 27, 2026 and Construction Calculator on October 30, 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.*