$4.99 $3.99

Price history


Details

  • Released
  • Updated
  • September 4, 2023
  • August 19, 2026

Features

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About

This app provides advanced calculation tools for field work, specializing in right and unequal triangles. It supports complex shapes like cones, pipes, and screw wings, with AR visualization for floor plans. It also includes standard calculator functions and memory features.

Right and unequal triangle calculations
Complex shape development (cones, pipes, etc.)
Augmented Reality (AR) floor plan visualization
Standard calculator functions with memory
Trigonometric and cosine theorem calculations
PCD and screw wing calculations
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What's New in Triangle3

3.10.4

August 19, 2026

Fixed an issue where a button overlapped another UI element on iPhone SE, making it impossible to tap.

User reviews

職人

エルボ 数値入れられないので改善おねがします バク修正おねがいします

職人

エルボ 数値入れられないので改善おねがします

バグなのか

三角形の図面しか出てこない

ARとか言うのが使えない

わざわざ購入して使えんやつあるなら書いといて欲しい
ARのボタン押したら画面真っ黒で何も使えない
有料にするなら全部使えるようにして欲しい

エルボの展開図

エルボ(エビ管)の展開図が全く異なる結果のですが、、、
(メールでも質問しましたがなかなかお返事いただけないのでこちらでもお伺いします)

Developer apps

FAQ

What types of triangles can Triangle3 calculate?

Triangle3 can calculate both right triangles and unequal triangles. The app allows users to input dimensions for two right triangles and three unequal triangles for calculations.

Does Triangle3 have ads?

No, Triangle3 does not contain advertisements. It is a paid application that offers an ad-free experience for its users.

What complex shapes can Triangle3 develop?

Triangle3 can develop various complex shapes including cones (with misalignment), diagonal cuts, R-cuts, T-pipes, shrimp tubes, rounded corners (with eccentricity), hopper eccentricity, pipes from mirror plates, connecting pipes to tapered pipes, screw wings, and calculate PCD.

What devices is Triangle3 compatible with?

Triangle3 is compatible with iPhone, iPod, and Apple Watch devices. This allows for calculations and visualizations across multiple Apple platforms.

How does the AR feature in Triangle3 work?

The AR feature in Triangle3 allows for the display of specific developments, such as floor plans, in full size using augmented reality. This helps visualize the calculated shapes in a real-world context.

What is the age rating for Triangle3?

Triangle3 has an age rating of 4+. This indicates that the content is generally suitable for all ages, with minimal or no mature content.

How often is Triangle3 updated?

Triangle3 was last updated on April 21, 2026, with version 3.10.2. The release date was September 4, 2023, suggesting a relatively recent update cycle.

Can Triangle3 be used offline?

As a paid calculator application, Triangle3 is designed to function without an internet connection. This ensures its utility for field work where connectivity may be limited.