---
title: "写真で分度器 - 角度計 - Reviews, Revenue and Downloads in Japan | Apple App Store"
description: "写真で分度器は、1枚の写真の上で、1つでも複数でも角度をすばやく正確に測定できるツールです。  ライブカメラで対象物にガイドを合わせてフリーズするか、写真ライブラリから画像を選択できます。1枚の写真に必要な数だけ角度を追加し、それぞれの色を変更したり、任意のラベルを付けたりできます。複数の測定も見やすく整理できます。  共通の支点から伸びる2本の線に加え、4つの独立したポイントで2本の直線を定義す"
---

# 写真で分度器 - 角度計 — Japan
> 写真の角度をすばやく測定

![写真で分度器 - 角度計 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/f6/60/27/f660275c-ecee-615b-57f3-fc46990ef794/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/434x0w.png)

**Developer:** [Romiick](https://apptail.io/developer/romiick-tgGf) (Japan)
**Category:** Utilities
**Rating:** 3.7/5 (7 ratings)
**Price:** Free
**Bundle ID:** com.romiick.protractor
**Store:** Apple App Store
**Country:** Japan
**Version:** 1.5.0 (released 2026-10-25)
**Original Release:** 2026-06-15
**Languages:** English, Arabic, Bulgarian, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek (modern), Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Lithuanian, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Chinese, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, Vietnamese

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/jp/app/app/id6778436306)
**AppTail Page:** [https://apptail.io/app/protractor-angle-meter-YXKA/japan](https://apptail.io/app/protractor-angle-meter-YXKA/japan)

## 写真で分度器 - 角度計 Description
写真で分度器は、1枚の写真の上で、1つでも複数でも角度をすばやく正確に測定できるツールです。

ライブカメラで対象物にガイドを合わせてフリーズするか、写真ライブラリから画像を選択できます。1枚の写真に必要な数だけ角度を追加し、それぞれの色を変更したり、任意のラベルを付けたりできます。複数の測定も見やすく整理できます。

共通の支点から伸びる2本の線に加え、4つの独立したポイントで2本の直線を定義する4点式にも対応。2本の線の交点が画像の外にある場合でも測定できます。ポイントをドラッグしている間は、指の上に拡大クロスヘア付きの高精度ルーペを表示。ピンチズーム、パン、15°スナップ、触覚フィードバックを使って細かく調整できます。

内角、外角、反射角を切り替え、結果を度、ラジアン、勾配%で表示できます。すべての変更は自動保存され、履歴からいつでも測定を再開できます。

Premium Passでは、写真に色分けされた測定線、アーク、数値、ラベルを合成したJPEGを出力・共有できます。保存した元画像は変更されません。

広告はありません。写真ベースの測定記録は10件まで無料で保存でき、各記録には角度をいくつでも追加できます。買い切りのPremium Passで、測定結果の画像共有と測定記録の件数無制限保存を利用できます。サブスクリプションはありません。

## 写真で分度器 - 角度計 Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/9a/d3/96/9ad39682-741a-1440-516d-b8d306c668a1/1.png/1290x2796.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c0/a4/3a/c0a43a21-9307-80bd-4669-10953e11838a/2.png/1290x2796.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/41/50/8b/41508b50-4aec-2689-28a6-069c6ea26172/3.png/1290x2796.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/be/3a/37/be3a3748-5a3d-78f0-3f9e-6687476b1beb/4.png/1290x2796.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ba/fd/e3/bafde352-ebd9-5fa4-91de-a8fd3ab07385/5.png/1290x2796.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/2e/be/12/2ebe128b-e28a-215c-5f21-b94e78fecb7a/6.png/1290x2796.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a7/1f/38/a71f38b5-24fd-f391-cb76-3dedc22cbbdd/7.png/1290x2796.png)

## 写真で分度器 - 角度計 Rating Breakdown in Japan
- 5 stars: 3 (43%)
- 4 stars: 1 (14%)
- 3 stars: 2 (29%)
- 2 stars: 0 (0%)
- 1 stars: 1 (14%)






## 写真で分度器 - 角度計 Available In
- [Japan](https://apptail.io/app/protractor-angle-meter-YXKA/japan)
- [China](https://apptail.io/app/protractor-angle-meter-YXKA/china)
- [South Korea](https://apptail.io/app/protractor-angle-meter-YXKA/south-korea)
- [Germany](https://apptail.io/app/protractor-angle-meter-YXKA/germany)
- [Spain](https://apptail.io/app/protractor-angle-meter-YXKA/spain)
- [Ukraine](https://apptail.io/app/protractor-angle-meter-YXKA/ukraine)
- [United States](https://apptail.io/app/protractor-angle-meter-YXKA/united-states)
- [Egypt](https://apptail.io/app/protractor-angle-meter-YXKA/egypt)
- [Israel](https://apptail.io/app/protractor-angle-meter-YXKA/israel)
- [Canada](https://apptail.io/app/protractor-angle-meter-YXKA/canada)
- [Taiwan](https://apptail.io/app/protractor-angle-meter-YXKA/taiwan)
- [France](https://apptail.io/app/protractor-angle-meter-YXKA/france)
- [Vietnam](https://apptail.io/app/protractor-angle-meter-YXKA/vietnam)
- [Denmark](https://apptail.io/app/protractor-angle-meter-YXKA/denmark)
- [Argentina](https://apptail.io/app/protractor-angle-meter-YXKA/argentina)
- [Estonia](https://apptail.io/app/protractor-angle-meter-YXKA/estonia)
- [Grenada](https://apptail.io/app/protractor-angle-meter-YXKA/grenada)
- [Greece](https://apptail.io/app/protractor-angle-meter-YXKA/greece)
- [Hong Kong SAR China](https://apptail.io/app/protractor-angle-meter-YXKA/hong-kong)
- [Croatia](https://apptail.io/app/protractor-angle-meter-YXKA/croatia)
- [Hungary](https://apptail.io/app/protractor-angle-meter-YXKA/hungary)
- [Indonesia](https://apptail.io/app/protractor-angle-meter-YXKA/indonesia)
- [Ireland](https://apptail.io/app/protractor-angle-meter-YXKA/ireland)
- [Kuwait](https://apptail.io/app/protractor-angle-meter-YXKA/kuwait)
- [Kazakhstan](https://apptail.io/app/protractor-angle-meter-YXKA/kazakhstan)
- [Lithuania](https://apptail.io/app/protractor-angle-meter-YXKA/lithuania)
- [Luxembourg](https://apptail.io/app/protractor-angle-meter-YXKA/luxembourg)
- [Madagascar](https://apptail.io/app/protractor-angle-meter-YXKA/madagascar)
- [Macao SAR China](https://apptail.io/app/protractor-angle-meter-YXKA/macau)
- [Malta](https://apptail.io/app/protractor-angle-meter-YXKA/malta)
- [Mexico](https://apptail.io/app/protractor-angle-meter-YXKA/mexico)
- [Netherlands](https://apptail.io/app/protractor-angle-meter-YXKA/netherlands)
- [Norway](https://apptail.io/app/protractor-angle-meter-YXKA/norway)
- [New Zealand](https://apptail.io/app/protractor-angle-meter-YXKA/new-zealand)
- [Oman](https://apptail.io/app/protractor-angle-meter-YXKA/oman)
- [Pakistan](https://apptail.io/app/protractor-angle-meter-YXKA/pakistan)
- [Poland](https://apptail.io/app/protractor-angle-meter-YXKA/poland)
- [Qatar](https://apptail.io/app/protractor-angle-meter-YXKA/qatar)
- [Romania](https://apptail.io/app/protractor-angle-meter-YXKA/romania)
- [Saudi Arabia](https://apptail.io/app/protractor-angle-meter-YXKA/saudi-arabia)
- [Sweden](https://apptail.io/app/protractor-angle-meter-YXKA/sweden)
- [Slovakia](https://apptail.io/app/protractor-angle-meter-YXKA/slovakia)
- [United Arab Emirates](https://apptail.io/app/protractor-angle-meter-YXKA/united-arab-emirates)
- [Türkiye](https://apptail.io/app/protractor-angle-meter-YXKA/turkey)
- [Uruguay](https://apptail.io/app/protractor-angle-meter-YXKA/uruguay)
- [Uzbekistan](https://apptail.io/app/protractor-angle-meter-YXKA/uzbekistan)
- [Senegal](https://apptail.io/app/protractor-angle-meter-YXKA/senegal)
- [Armenia](https://apptail.io/app/protractor-angle-meter-YXKA/armenia)
- [Austria](https://apptail.io/app/protractor-angle-meter-YXKA/austria)
- [Australia](https://apptail.io/app/protractor-angle-meter-YXKA/australia)
- [Bulgaria](https://apptail.io/app/protractor-angle-meter-YXKA/bulgaria)
- [Bermuda](https://apptail.io/app/protractor-angle-meter-YXKA/bermuda)
- [Brazil](https://apptail.io/app/protractor-angle-meter-YXKA/brazil)
- [Belarus](https://apptail.io/app/protractor-angle-meter-YXKA/belarus)
- [Switzerland](https://apptail.io/app/protractor-angle-meter-YXKA/switzerland)
- [Chile](https://apptail.io/app/protractor-angle-meter-YXKA/chile)
- [Colombia](https://apptail.io/app/protractor-angle-meter-YXKA/colombia)
- [Cyprus](https://apptail.io/app/protractor-angle-meter-YXKA/cyprus)
- [Czechia](https://apptail.io/app/protractor-angle-meter-YXKA/czechia)
- [Ecuador](https://apptail.io/app/protractor-angle-meter-YXKA/ecuador)
- [Finland](https://apptail.io/app/protractor-angle-meter-YXKA/finland)
- [United Kingdom](https://apptail.io/app/protractor-angle-meter-YXKA/united-kingdom)

---

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