Solar Book vs CloudLabs What is Light?
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solar Book
This app provides detailed information about solar eclipses, including timings for different phases based on your location. It allows you to view sequential images and star charts for planning and observation.
- Solar eclipse phase timing
- Location-based eclipse calculations
- Sequential eclipse image display
- Star chart visualization
- Past and future eclipse planning
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The Solar Book is an app for smart-phones and tablets for a solar eclipse. The Solar Book shows at what time each portion of the Sun is covered by the Moon during a solar eclipse. The beginning time of a solar eclipse, time of the maximum phase of the solar eclipse and the ending time of the solar eclipse will change depending on the location of your observing area. The Solar Book will show you the eclipse phases at your location. Your location for observing the solar eclipse can be designated with use of the location setup dialog box. This allows you to plan in advance the progression of the eclipse. Sequential images of the solar eclipse will be displayed in the appropriate order when you tap on the eclipse thumbnail images icon on the lower right of the screen. Solar eclipses can be displayed by designating the date of a solar eclipse in the past or the future if you cannot find it in a list of the selection. The Solar Book will show you a star chart of the sky at your place of observation if the solar eclipse is not selected.
CloudLabs What is Light?
Explore the nature of light through interactive simulations. Classify natural and artificial light sources and experiment with how light interacts with various materials. This educational tool offers a hands-on approach to understanding fundamental physics concepts.
- Classify natural and artificial light sources
- Simulate light travel through materials
- Interactive educational experiments
- Understand light physics concepts
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In this simulation, it is necessary to classify, among several elements, those that generate natural light and those that generate artificial light. In addition, a test must be performed with different objects to identify the way in which light travels through different materials.
Screenshots
Verdict
The clearest difference is rating: CloudLabs What is Light? at 5.0 against Solar Book's 4.7. CloudLabs What is Light? also leads on update cadence (every 6 months vs every 14 months) and iOS requirement (10.0 vs 12.0). Solar Book's advantage is ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
CloudLabs What is Light? holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Solar Book ships an update every 14 months, CloudLabs What is Light? every 6 months. The most recent releases landed on June 1, 2026 and June 11, 2026 respectively.
| Parameter | Solar Book | CloudLabs What is Light? |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 14 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 171 MB |
| Age rating | 4+ | 17+ |
| Developer | Vixen Co., Ltd. | Jiovany Orozco |
Customer experience
Solar Book
CloudLabs What is Light?
In-app purchases
Solar Book
No in-app purchases
CloudLabs What is Light?
No in-app purchases
Questions
Is Solar Book free?
Is CloudLabs What is Light? free?
Which has better reviews, Solar Book or CloudLabs What is Light??
Do Solar Book or CloudLabs What is Light? have ads?
Which is updated more often, Solar Book or CloudLabs What is Light??
Other comparisons
