# 技術士 一次試験（衛生工学部門） vs GolfRules AI

The clearest difference is update cadence: GolfRules AI at every 2 days against 技術士 一次試験（衛生工学部門）'s every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 技術士 一次試験（衛生工学部門） sells 1 one-off in-app purchase and GolfRules AI sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

技術士 一次試験（衛生工学部門） ships an update every 5 months, GolfRules AI every 2 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 技術士 一次試験（衛生工学部門） | GolfRules AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Size | 5 MB | 61 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TAKAYUKI OOTA](https://appshunter.io/developer/1855196437) | [Golf Rules AI, Inc.](https://appshunter.io/developer/1876512658) |

## What reviewers say

### 技術士 一次試験（衛生工学部門）

[App page](https://appshunter.io/ios/app/id6757382033)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 技術士（衛生工学部門） 試験対策 | $4.99 | one-time |


### GolfRules AI

[App page](https://appshunter.io/ios/app/golfrules-ai/id6759045780)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |
| Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is 技術士 一次試験（衛生工学部門） free?

技術士 一次試験（衛生工学部門） is free to download, with in-app purchases available.

### Is GolfRules AI free?

GolfRules AI is free to download, with in-app purchases available.

### Do 技術士 一次試験（衛生工学部門） or GolfRules AI have ads?

Neither 技術士 一次試験（衛生工学部門） nor GolfRules AI shows ads.

### Which is updated more often, 技術士 一次試験（衛生工学部門） or GolfRules AI?

技術士 一次試験（衛生工学部門） ships an update every 5 months, and GolfRules AI every 2 days. Most recently, 技術士 一次試験（衛生工学部門） was updated on November 5, 2026 and GolfRules AI on October 31, 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.*