# GFS vs 丙種ガス主任技術者対策 500問

The clearest difference is price: GFS at Free against 丙種ガス主任技術者対策 500問's $3.99. GFS also leads on iOS requirement (13.0 vs 15.1). 丙種ガス主任技術者対策 500問's advantage is update cadence (every 3 weeks vs every 3 months). On ads, in-app purchases and device support there is nothing between them.

GFS is free to download; 丙種ガス主任技術者対策 500問 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GFS ships an update every 3 months, 丙種ガス主任技術者対策 500問 every 3 weeks. The most recent releases landed on October 2, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | GFS | 丙種ガス主任技術者対策 500問 |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Positive reviews | 21.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 6 MB | 34 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FREE LIFE CONSULTING, K.K.](https://appshunter.io/developer/1538988951) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### GFS

[App page](https://appshunter.io/ios/app/gfs/id1538988948)

Learn about history, finance, economics, and asset management through engaging videos. Access educational content 24/7, anytime, anywhere, and rewatch lessons as many times as you need.

**Highlights:** Learn history, finance, and economics, Study asset management and investment, Access video lessons 24/7, Rewatch lessons unlimited times, Learn anytime, anywhere

**Features:** macOS Compatibility

**In-app purchases:** none


### 丙種ガス主任技術者対策 500問

[App page](https://appshunter.io/ios/app/500/id6790227200)

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

**In-app purchases:** none


## Frequently asked questions

### Is GFS free?

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

### Is 丙種ガス主任技術者対策 500問 free?

丙種ガス主任技術者対策 500問 costs $3.99, with no in-app purchases.

### Do GFS or 丙種ガス主任技術者対策 500問 have ads?

Neither GFS nor 丙種ガス主任技術者対策 500問 shows ads.

### Which is updated more often, GFS or 丙種ガス主任技術者対策 500問?

GFS ships an update every 3 months, and 丙種ガス主任技術者対策 500問 every 3 weeks. Most recently, GFS was updated on October 2, 2026 and 丙種ガス主任技術者対策 500問 on September 25, 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.*