# MOFD Fire Prevention vs GDSII Viewer

The clearest difference is in-app purchases: MOFD Fire Prevention at none against GDSII Viewer's 4. MOFD Fire Prevention also leads on iOS requirement (15.0 vs 26.0). GDSII Viewer's advantage is update cadence (every 2 months vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. GDSII Viewer sells 4 in-app purchases, starting at $0.99 per month. MOFD Fire Prevention asks for nothing beyond the download.

MOFD Fire Prevention ships an update every 8 months, GDSII Viewer every 2 months. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | MOFD Fire Prevention | GDSII Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/gdsii-viewer/id6502424439/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 127 MB | 13 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GOGov, Inc.](https://appshunter.io/developer/351223719) | [AIP Technology Corporation, Taiwan Branch](https://appshunter.io/developer/1733199040) |

## What reviewers say

### MOFD Fire Prevention

[App page](https://appshunter.io/ios/app/mofd-fire-prevention/id1569651201)

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

**In-app purchases:** none


### GDSII Viewer

[App page](https://appshunter.io/ios/app/gdsii-viewer/id6502424439)

This utility allows users to view and analyze GDSII files, essential for semiconductor design. It offers high precision viewing, layer management, and detailed inspection tools to streamline integrated circuit design processes.

**Highlights:** High precision GDSII file viewing, Layer management and toggling, Zoom and pan functionality, Detailed inspection tools, Streamlines IC design process

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Viewer(Monthly) | $0.99 | per month |
| Viewer(Annual) | $9.99 | per year |
| Editor(Monthly) | $9.99 | per month |
| Editor(Annual) | $99.99 | per year |


## Frequently asked questions

### Is MOFD Fire Prevention free?

MOFD Fire Prevention is free to download, with no in-app purchases.

### Is GDSII Viewer free?

GDSII Viewer is free to download, with in-app purchases available.

### Do MOFD Fire Prevention or GDSII Viewer have ads?

Neither MOFD Fire Prevention nor GDSII Viewer shows ads.

### Which is updated more often, MOFD Fire Prevention or GDSII Viewer?

MOFD Fire Prevention ships an update every 8 months, and GDSII Viewer every 2 months. Most recently, MOFD Fire Prevention was updated on October 25, 2026 and GDSII Viewer on October 21, 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.*