# WeightCalculation vs 鋼材tap V1

The clearest difference is in-app purchases: WeightCalculation at none against 鋼材tap V1's 1. WeightCalculation also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.6). 鋼材tap V1's advantage is update cadence (every 9 days vs every 9 months) and review sentiment (75% vs 57%). On price and device support there is nothing between them.

Both are free to download. 鋼材tap V1 sells 1 in-app purchase, starting at $0.99 per month. WeightCalculation asks for nothing beyond the download.

WeightCalculation ships an update every 9 months, 鋼材tap V1 every 9 days. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | WeightCalculation | 鋼材tap V1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/weightcalculation/id584831153/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 57.1% of reviews | **75.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 49 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ai-Link](https://appshunter.io/developer/493910151) | [TOGUCHI, CO., LTD.](https://appshunter.io/developer/668415384) |

## What reviewers say

### WeightCalculation

[App page](https://appshunter.io/ios/app/weightcalculation/id584831153)

Instantly calculate the weight of sheet metal by entering dimensions and material density. Supports various shapes and can also compute costing and estimated amounts based on material rates.

**Highlights:** Calculate weight by size and shape, Supports cube, cylinder, prisms, and pipes, Instant weight calculation, Costing and estimation features, Select specific gravity of metal

**Features:** macOS Compatibility

**In-app purchases:** none


### 鋼材tap V1

[App page](https://appshunter.io/ios/app/tap-v1/id668471425)

This app calculates the weight and surface area of various steel types used in Japan. It supports numerous steel sections, plates, tubes, and pipes, and allows for sharing and emailing calculations. It also offers cross-sectional shape and performance calculations.

**Highlights:** Steel weight calculation, Surface area calculation, Cross-sectional shape and performance calculation, Support for Japanese JIS standards, Extensive steel type library, Share and email calculations, CSV export

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide ads | $0.99 | per month |


## Frequently asked questions

### Is WeightCalculation free?

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

### Is 鋼材tap V1 free?

鋼材tap V1 is free to download, with in-app purchases available.

### Do WeightCalculation or 鋼材tap V1 have ads?

鋼材tap V1 shows ads; WeightCalculation does not.

### Which is updated more often, WeightCalculation or 鋼材tap V1?

WeightCalculation ships an update every 9 months, and 鋼材tap V1 every 9 days. Most recently, WeightCalculation was updated on October 16, 2026 and 鋼材tap V1 on October 11, 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.*