# CalcTri V1 vs Trigonometry Calculator.

The clearest difference is in-app purchases: CalcTri V1 at none against Trigonometry Calculator.'s 2. Trigonometry Calculator.'s advantage is update cadence (every 2 weeks vs every 5 weeks) and device support (3 vs 1). On price, review sentiment and ads there is nothing between them.

Both are free to download. Trigonometry Calculator. sells 2 in-app purchases, starting at $2.99 per month. CalcTri V1 asks for nothing beyond the download.

CalcTri V1 ships an update every 5 weeks, Trigonometry Calculator. every 2 weeks. The most recent releases landed on September 25, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | CalcTri V1 | Trigonometry Calculator. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/trigonometry-calculator/id6741517618/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 40 MB | 64 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TOGUCHI, CO., LTD.](https://appshunter.io/developer/668415384) | [Horitech](https://appshunter.io/developer/1794537335) |

## What reviewers say

### CalcTri V1

[App page](https://appshunter.io/ios/app/calctri-v1/id1606476734)

This utility app offers a calculator, right triangle calculations, and pipe centering. It mimics desktop calculator operation and allows copying from history. Supports angle input in degrees and minutes for precise calculations.

**Highlights:** Basic calculator function, Right triangle calculations, Pipe centering calculations, Angle input in degrees and minutes, Copy calculation history

**Features:** Vision Pro support

**In-app purchases:** none


### Trigonometry Calculator.

[App page](https://appshunter.io/ios/app/trigonometry-calculator/id6741517618)

This app calculates key values for right-angled and scalene triangles with high precision. It offers a user-friendly interface, flexible angle units, and includes a reference guide to trigonometric formulas. A subscription unlocks calculation steps and removes ads.

**Highlights:** Right-angled & scalene triangle support, Formula reference guide, Accurate side, angle, and area calculations, High precision to 14 decimal places, Flexible angle units (degrees/radians), User-friendly interface

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $24.99 | per year |


## Frequently asked questions

### Is CalcTri V1 free?

CalcTri V1 is free to download, with no in-app purchases.

### Is Trigonometry Calculator. free?

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

### Do CalcTri V1 or Trigonometry Calculator. have ads?

Both CalcTri V1 and Trigonometry Calculator. show ads.

### Which is updated more often, CalcTri V1 or Trigonometry Calculator.?

CalcTri V1 ships an update every 5 weeks, and Trigonometry Calculator. every 2 weeks. Most recently, CalcTri V1 was updated on September 25, 2026 and Trigonometry Calculator. on September 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*