# Triangle3 vs Thermal Insulation Calculator

The clearest difference is price: Thermal Insulation Calculator at Free against Triangle3's $3.99. Thermal Insulation Calculator also leads on iOS requirement (13.0 vs 15.0). Triangle3's advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 13 months). On ads and device support there is nothing between them.

Thermal Insulation Calculator is free to download; Triangle3 costs $3.99 up front. Thermal Insulation Calculator sells 1 one-off in-app purchase. Triangle3 asks for nothing beyond the download.

Triangle3 ships an update every 5 weeks, Thermal Insulation Calculator every 13 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Triangle3 | Thermal Insulation Calculator |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[1.0 (4 ratings)](https://appshunter.io/ios/app/thermal-insulation-calculator/id6738991204/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 13 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 7 MB | 57 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ryo sasaki](https://appshunter.io/developer/318552526) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### 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


### Thermal Insulation Calculator

[App page](https://appshunter.io/ios/app/thermal-insulation-calculator/id6738991204)

This tool simplifies complex thermal insulation estimations for professionals, students, and learners. It provides clear insights for planning and understanding insulation tasks with a user-friendly interface.

**Highlights:** Thermal insulation calculations, Estimation support, Educational insights, User-friendly interface, Beginner and professional support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $8.99 | one-time |


## Frequently asked questions

### Is Triangle3 free?

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

### Is Thermal Insulation Calculator free?

Thermal Insulation Calculator is free to download, with in-app purchases available.

### Do Triangle3 or Thermal Insulation Calculator have ads?

Neither Triangle3 nor Thermal Insulation Calculator shows ads.

### Which is updated more often, Triangle3 or Thermal Insulation Calculator?

Triangle3 ships an update every 5 weeks, and Thermal Insulation Calculator every 13 months. Most recently, Triangle3 was updated on October 27, 2026 and Thermal Insulation Calculator on October 24, 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.*