# Trigonometric Calculation vs Drafting Utility

The clearest difference is update cadence: Drafting Utility at daily against Trigonometric Calculation's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

Trigonometric Calculation ships an update every 6 weeks, Drafting Utility daily. The most recent releases landed on May 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Trigonometric Calculation | Drafting Utility |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Daily** |
| Size | 5 MB | 3 MB |
| Requires iOS | **15.5** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Risako Asai](https://appshunter.io/developer/1671273580) | [Masaharu Tsukamoto](https://appshunter.io/developer/939316877) |

## What reviewers say

### Trigonometric Calculation

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Drafting Utility

[App page](https://appshunter.io/ios/app/drafting-utility-trianglecalc/id6738353118)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometric Calculation free?

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

### Is Drafting Utility free?

Drafting Utility is free to download, with no in-app purchases.

### Do Trigonometric Calculation or Drafting Utility have ads?

Both Trigonometric Calculation and Drafting Utility show ads.

### Which is updated more often, Trigonometric Calculation or Drafting Utility?

Trigonometric Calculation ships an update every 6 weeks, and Drafting Utility daily. Most recently, Trigonometric Calculation was updated on May 16, 2026 and Drafting Utility on September 22, 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.*