# 面取りと開先２ vs Trigonometric Calculation

The clearest difference is price: Trigonometric Calculation at Free against 面取りと開先２'s $4.99. Trigonometric Calculation also leads on update cadence (every 6 weeks vs every 39 months). 面取りと開先２'s advantage is ads (none vs shown) and iOS requirement (11.0 vs 15.5). On in-app purchases and device support there is nothing between them.

Trigonometric Calculation is free to download; 面取りと開先２ costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

面取りと開先２ ships an update every 39 months, Trigonometric Calculation every 6 weeks. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 面取りと開先２ | Trigonometric Calculation |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 39 months | **Every 6 weeks** |
| Size | 1 MB | 5 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tetsuya Morikawa](https://appshunter.io/developer/728393868) | [Risako Asai](https://appshunter.io/developer/1671273580) |

## What reviewers say

### 面取りと開先２

[App page](https://appshunter.io/ios/app/id1111219041)

**In-app purchases:** none


### Trigonometric Calculation

[App page](https://appshunter.io/ios/app/trigonometric-calculation/id1636196284)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 面取りと開先２ free?

面取りと開先２ costs $4.99, with no in-app purchases.

### Is Trigonometric Calculation free?

Trigonometric Calculation is free to download, with no in-app purchases.

### Do 面取りと開先２ or Trigonometric Calculation have ads?

Trigonometric Calculation shows ads; 面取りと開先２ does not.

### Which is updated more often, 面取りと開先２ or Trigonometric Calculation?

面取りと開先２ ships an update every 39 months, and Trigonometric Calculation every 6 weeks. Most recently, 面取りと開先２ was updated on October 7, 2026 and Trigonometric Calculation on October 13, 2026.

---

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