GDSII Viewer vs Sigmakey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GDSII Viewer
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.
- High precision GDSII file viewing
- Layer management and toggling
- Zoom and pan functionality
- Detailed inspection tools
- Streamlines IC design process
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Description: The GDSII Viewer is a powerful tool designed for viewing and analyzing GDSII files, commonly used in the semiconductor industry. It provides a user-friendly interface and advanced features to streamline the design process of integrated circuits. Features: High Precision Viewing: Examine GDSII files with exact detail. Layer Management: Easily manage and toggle between different layers. Zoom and Pan: Effortlessly zoom in and out or pan across your designs. Detailed Inspection Tools: Utilize tools for in-depth analysis. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Sigmakey
This utility provides a specialized keyboard for typing mathematical expressions, including fractions, roots, and Greek letters, directly within any app. It supports LaTeX, Unicode, and image output, with on-device processing for privacy and speed.
- Full math keyboard layout
- Two-dimensional cursor for exponents/numerators
- Type LaTeX, Unicode, or rendered image
- On-device typesetting, no network required
- Symbol search, recent, and favorite symbols
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Sigmakey is a math keyboard for people who need to type actual math, anywhere you can type at all. Fractions, exponents, roots, Greek letters, and matrices sit one tap away, and the cursor moves right into a numerator or an exponent, so scientific notation looks the way it should. - A full math keyboard layout that works in any app with a text field - A two-dimensional field with a cursor that steps into fractions and powers - Type LaTeX, plain Unicode, or a rendered image, whichever the app expects - Everything typeset on device, with no network - Search for a symbol, or grab a recent or a favorite Drop an equation into a note, a message, or a homework app without hunting through menus. Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vTDX9pxPOlUJl_skVUHPi99mAw0y2B2BYd_v1mJkoF3xW3rlOcW5KlYd4t93MMbbGhctSTnBTy7d_l6/pub Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Sigmakey at 2.0 against GDSII Viewer's 1.0. On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. GDSII Viewer sells 4 in-app purchases, starting at $0.99 per month and Sigmakey sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Sigmakey holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | GDSII Viewer | Sigmakey |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 2.0 (1 ratings) — better |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 13 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | AIP Technology Corporation, Taiwan Branch | Andrii Bashta |
Customer experience
GDSII Viewer
Sigmakey
In-app purchases
GDSII Viewer
- Viewer(Monthly)3 Days trial$0.991 Month
- Viewer(Annual)3 Days trial$9.991 Year
- Editor(Monthly)3 Days trial$9.991 Month
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- Editor(Annual)3 Days trial$99.991 Year
Sigmakey
- Sigmakey Pro$9.99
