# 一発修正君 vs Trigonometric Calculation

The clearest difference is ads: 一発修正君 at none against Trigonometric Calculation's shown. Trigonometric Calculation's advantage is update cadence (every 6 weeks vs every 11 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

一発修正君 ships an update every 11 months, Trigonometric Calculation every 6 weeks. The most recent releases landed on October 26, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 一発修正君 | Trigonometric Calculation |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 6 weeks** |
| Size | 6 MB | 5 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yoshida kogyo,y.k.](https://appshunter.io/developer/1076229459) | [Risako Asai](https://appshunter.io/developer/1671273580) |

## What reviewers say

### 一発修正君

[App page](https://appshunter.io/ios/app/id1076229460)

**Features:** Vision Pro support

**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 一発修正君 free?

一発修正君 is free to download, with no in-app purchases.

### Is Trigonometric Calculation free?

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

### Do 一発修正君 or Trigonometric Calculation have ads?

Trigonometric Calculation shows ads; 一発修正君 does not.

### Which is updated more often, 一発修正君 or Trigonometric Calculation?

一発修正君 ships an update every 11 months, and Trigonometric Calculation every 6 weeks. Most recently, 一発修正君 was updated on October 26, 2026 and Trigonometric Calculation on October 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.*