# ShapeInfo Plus vs Triangle3

The clearest difference is review sentiment: ShapeInfo Plus at 68% against Triangle3's 40%. ShapeInfo Plus also leads on price ($0.99 vs $3.99) and iOS requirement (13.0 vs 15.0). Triangle3's advantage is update cadence (every 5 weeks vs every 6 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

ShapeInfo Plus costs $0.99 and Triangle3 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ShapeInfo Plus ships an update every 6 months, Triangle3 every 5 weeks. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | ShapeInfo Plus | Triangle3 |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[4.6 (31 ratings)](https://appshunter.io/ios/app/shapeinfo-plus/id983851989/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | **67.9% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 11 MB | 7 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Noriyasu Kutsuzawa](https://appshunter.io/developer/668500806) | [ryo sasaki](https://appshunter.io/developer/318552526) |

## What reviewers say

### ShapeInfo Plus

[App page](https://appshunter.io/ios/app/shapeinfo-plus/id983851989)

This app calculates lengths, angles, and areas for various geometric shapes. It supports a wide range of 2D and 3D shapes, making it a handy tool for engineers and students.

**Highlights:** Calculate lengths, angles, and area, Calculate volume for 3D shapes, Supports various 2D and 3D shapes, User-friendly input for calculations, Immediate calculation results

**Features:** Vision Pro support

**In-app purchases:** none


### Triangle3

[App page](https://appshunter.io/ios/app/triangle3/id1643788233)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ShapeInfo Plus free?

ShapeInfo Plus costs $0.99, with no in-app purchases.

### Is Triangle3 free?

Triangle3 costs $3.99, with no in-app purchases.

### Do ShapeInfo Plus or Triangle3 have ads?

Neither ShapeInfo Plus nor Triangle3 shows ads.

### Which is updated more often, ShapeInfo Plus or Triangle3?

ShapeInfo Plus ships an update every 6 months, and Triangle3 every 5 weeks. Most recently, ShapeInfo Plus was updated on September 23, 2026 and Triangle3 on September 13, 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.*