# GDSII Viewer vs ApCalendar

The clearest difference is rating: ApCalendar at 5.0 against GDSII Viewer's 1.0. ApCalendar also leads on in-app purchases (none vs 4) and iOS requirement (11.0 vs 26.0). On price, ratings volume, 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. ApCalendar asks for nothing beyond the download.

ApCalendar holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | GDSII Viewer | ApCalendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/gdsii-viewer/id6502424439/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/apcalendar/id6736649546/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 26 MB |
| Requires iOS | 26.0 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AIP Technology Corporation, Taiwan Branch](https://appshunter.io/developer/1733199040) | [Adtech Innovation Limited](https://appshunter.io/developer/1683250193) |

## What reviewers say

### 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 |


### ApCalendar

[App page](https://appshunter.io/ios/app/apcalendar/id6736649546)

A versatile calendar tool offering multiple styles, including lunar calendar support and public holidays. Users can add notes to their calendar events.

**Highlights:** Multiple calendar styles, Lunar calendar support, Public holiday tracking, Add calendar notes, Event reminders

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GDSII Viewer free?

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

### Is ApCalendar free?

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

### Which has better reviews, GDSII Viewer or ApCalendar?

ApCalendar is rated higher. GDSII Viewer averages 1.0 out of 5 from 1 ratings, while ApCalendar averages 5.0 from 1 ratings.

### Do GDSII Viewer or ApCalendar have ads?

Neither GDSII Viewer nor ApCalendar shows ads.

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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.*