# Calculator 2tax vs Triangle3

The clearest difference is price: Calculator 2tax at Free against Triangle3's $3.99. Calculator 2tax also leads on review sentiment (62% vs 40%). Triangle3's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Calculator 2tax is free to download; Triangle3 costs $3.99 up front. Calculator 2tax sells 1 one-off in-app purchase. Triangle3 asks for nothing beyond the download.

Calculator 2tax ships an update every 10 months, Triangle3 every 5 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Calculator 2tax | Triangle3 |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calculator-2tax/id1476140837/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **61.5% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 5 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 7 MB | 7 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [sky-nexus Inc.](https://appshunter.io/developer/512522554) | [ryo sasaki](https://appshunter.io/developer/318552526) |

## What reviewers say

### Calculator 2tax

[App page](https://appshunter.io/ios/app/calculator-2tax/id1476140837)

This calculator handles two consumption taxes and displays input formulas. It stores calculations and their formulas in history, operating like a standard calculator. It's designed for ease of use and clear calculation processes.

**Highlights:** Supports two consumption taxes, Displays input formulas, Stores calculations with formulas in history, Operates like a general calculator, Simple and easy-to-use interface

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Disable Ads | $1.99 | one-time |


### 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 Calculator 2tax free?

Calculator 2tax is free to download, with in-app purchases available.

### Is Triangle3 free?

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

### Do Calculator 2tax or Triangle3 have ads?

Calculator 2tax shows ads; Triangle3 does not.

### Which is updated more often, Calculator 2tax or Triangle3?

Calculator 2tax ships an update every 10 months, and Triangle3 every 5 weeks. Most recently, Calculator 2tax was updated on October 24, 2026 and Triangle3 on October 27, 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.*