# 工場電卓 vs My Screen Protractor

The clearest difference is in-app purchases: My Screen Protractor at none against 工場電卓's 2. My Screen Protractor also leads on update cadence (weekly vs every 13 months). 工場電卓's advantage is iOS requirement (6.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. 工場電卓 sells 2 one-off in-app purchases. My Screen Protractor asks for nothing beyond the download.

工場電卓 ships an update every 13 months, My Screen Protractor weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 工場電卓 | My Screen Protractor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 13 months | **Weekly** |
| Size | 2 MB | 21 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tashiro Iron Works Co.,Ltd.](https://appshunter.io/developer/543101242) | [mintaek lee](https://appshunter.io/developer/1862176346) |

## What reviewers say

### 工場電卓

[App page](https://appshunter.io/ios/app/id780325225)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 工場電卓 広告非表示 | $0.99 | one-time |
| 座標・角度計算機能パック | $0.99 | one-time |


### My Screen Protractor

[App page](https://appshunter.io/ios/app/my-screen-protractor/id6761331320)

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

**In-app purchases:** none


## Frequently asked questions

### Is 工場電卓 free?

工場電卓 is free to download, with in-app purchases available.

### Is My Screen Protractor free?

My Screen Protractor is free to download, with no in-app purchases.

### Do 工場電卓 or My Screen Protractor have ads?

Neither 工場電卓 nor My Screen Protractor shows ads.

### Which is updated more often, 工場電卓 or My Screen Protractor?

工場電卓 ships an update every 13 months, and My Screen Protractor weekly. Most recently, 工場電卓 was updated on November 1, 2026 and My Screen Protractor on October 31, 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.*