# Red Sheet vs ガス溶接技能講習 | 2026年対策問題

The clearest difference is price: Red Sheet at Free against ガス溶接技能講習 | 2026年対策問題's $1.99. Red Sheet also leads on device support (4 vs 2) and iOS requirement (13.0 vs 17.0). ガス溶接技能講習 | 2026年対策問題's advantage is in-app purchases (none vs 7) and ads (none vs shown).

Red Sheet is free to download; ガス溶接技能講習 | 2026年対策問題 costs $1.99 up front. Red Sheet sells 7 in-app purchases, starting at $2.99 per month. ガス溶接技能講習 | 2026年対策問題 asks for nothing beyond the download.

## The numbers

| Metric | Red Sheet | ガス溶接技能講習 | 2026年対策問題 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/red-sheet-pdf-study-app/id1580506756/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 193 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Foodmenu.world Inc.](https://appshunter.io/developer/1438351063) | [Masaki Kobayashi](https://appshunter.io/developer/1882180437) |

## What reviewers say

### Red Sheet

[App page](https://appshunter.io/ios/app/red-sheet-pdf-study-app/id1580506756)

Create and study flashcards from your PDFs, notes, and images. This app lets you hide and reveal text to transform study materials into interactive flashcards for faster memorization. Supports various import options and flexible study tools.

**Highlights:** Create flashcards from PDFs, Import from note apps and cloud storage, Hide and reveal text for study, Create flashcards from photos and images, Vocabulary and word list flashcards, One-tap show/hide for quick review

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Special plan | $2.99 | per month |
| Monthly Super Saver Plan | $2.99 | per month |
| Monthly Value Plan | $3.99 | per month |
| Basic Plan | $5.99 | per month |
| 3 Month Plan - V 3.1.5 needed | $9.99 | per 3 months |
| Half year plan (Sale) | $17.99 | per 6 months |
| Half year plan - V2.9.0 needed | $22.99 | per 6 months |


### ガス溶接技能講習 | 2026年対策問題

[App page](https://appshunter.io/ios/app/2026/id6783867575)

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

**In-app purchases:** none


## Frequently asked questions

### Is Red Sheet free?

Red Sheet is free to download, with in-app purchases available.

### Is ガス溶接技能講習 | 2026年対策問題 free?

ガス溶接技能講習 | 2026年対策問題 costs $1.99, with no in-app purchases.

### Do Red Sheet or ガス溶接技能講習 | 2026年対策問題 have ads?

Red Sheet shows ads; ガス溶接技能講習 | 2026年対策問題 does not.

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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.*