Photonics Spectra vs Semi Dig
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Photonics Spectra
Access the leading magazine for the photonics industry on your mobile device. Read articles in a convenient format, download PDF issues, and search through archives of past content. Stay informed about optics, lasers, imaging, and more.
- Mobile-friendly article reading
- Downloadable PDF issues
- Searchable archives
- Comprehensive industry coverage
- Technical and practical information
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Photonics Spectra, the world's leading magazine covering the photonics industry, is also available as a mobile app. Features include the ability to: • Read articles in a mobile-friendly format • Download a pdf of each issue • Search archived issues Since 1967, Photonics Spectra magazine has defined the science and industry of photonics, promoting an international dialogue among the engineers, scientists, and end users who develop, commercialize, and buy photonic products. Photonics Spectra is unique in that it provides both technical and practical information for every aspect of the global industry, integrating all segments of photonics: optics, lasers, imaging, spectroscopy, sensors and detectors, fiber optics, microscopy, displays, light sources, machine vision, and more. This application is powered by GTxcel, a leader in digital publishing technology, provider of hundreds of online digital publications and mobile magazine apps.
Semi Dig
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Semi Dig — your semiconductor manufacturing resource. Semi Dig is the app for the Semiconductor Digest website and magazine. Semiconductor Digest’s readers are engineers and business managers involved in the worldwide semiconductor manufacturing, design and packaging operations. Our news and tech articles provide them with the tools they need to do their jobs more efficiently. Our app provides easy access to the latest information and other relevant resources. Semiconductor Digest magazine is published 8 times a year and is a great source for exclusive in-depth semiconductor industry articles. In addition to a resourceful website, Semiconductor Digest publishes a daily newsletter and 6 topical newsletters.
Screenshots
Verdict
Photonics Spectra and Semi Dig are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
Photonics Spectra ships an update every 10 months, Semi Dig every 17 months. The most recent releases landed on September 8, 2026 and May 18, 2026 respectively.
| Parameter | Photonics Spectra | Semi Dig |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 months — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 29 MB | 62 MB |
| Age rating | 4+ | 17+ |
| Developer | Laurin Publishing Co., Inc. | Gold Flag Media LLC |
In-app purchases
Photonics Spectra
No in-app purchases
Semi Dig
No in-app purchases
Questions
Is Photonics Spectra free?
Is Semi Dig free?
Do Photonics Spectra or Semi Dig have ads?
Which is updated more often, Photonics Spectra or Semi Dig?
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