Comparison

Hormones. vs Solar Book

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hormones.

Features
Read full description

Hormone details the functions of hormones in human body in a simple and animated way. Human body mechanism is a complex and amazing process with a lot of metabolic functions. There are hundreds of physiological regulations happen in our body without our knowledge. Hormones play a key role in regulating the body functions and behaviour. Hormones regulates body processes such as digestion, metabolism, growth, reproduction and more. Hormones are secreted by endocrine glands, which are ductless and secret hormones directly into blood stream. Ajax's Hormones app is designed to make you understand the hormone structure easily with pictures and animations. The app contains the following sections: Hormone app contains detailed section about Glands: The shape of a gland will be displayed in this section and you can easily learn the importance of each and every gland purposes. The section contains an interactive module where you can drag and drop the images of glands to know the details of the hormones secreted by them. Diabetes&Mellitus: A dedicated section for Diabetes mellitus that illustrates how hormone activity controls blood glucose level in the body. Quiz: You can test your knowledge gained in the earlier sections through the interactive animated quiz. The Hormones app contains the following features: *User-friendly interface *Pictorial representation of information *Interesting graphics and animations

About

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.

Highlights
  • Solar eclipse phase timing
  • Location-based eclipse calculations
  • Sequential eclipse image display
  • Star chart visualization
  • Past and future eclipse planning
Read full description

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.

Screenshots

Solar Book3 screens

Verdict

The call

The clearest difference is price: Solar Book at Free against Hormones.'s $0.99. Solar Book also leads on update cadence (every 14 months vs every 34 months) and device support (3 vs 1). On ads, in-app purchases and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Solar Book is free to download; Hormones. costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Hormones. ships an update every 34 months, Solar Book every 14 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 6 level
Hormones. versus Solar Book: the parameters behind the verdict, then further details
ParameterHormones.Solar Book
Price$0.99Free — better
Rating—4.8 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 34 monthsEvery 14 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.012.0
Further details — not scored
Size620 MB5 MB
Age rating4+4+
Developerwww.ajaxmediatech.comVixen Co.,Ltd.

In-app purchases

None

Hormones.

No in-app purchases

None

Solar Book

No in-app purchases

Questions

Is Hormones. free?
Hormones. costs $0.99, with no in-app purchases.
Is Solar Book free?
Solar Book is free to download, with no in-app purchases.
Do Hormones. or Solar Book have ads?
Neither Hormones. nor Solar Book shows ads.
Which is updated more often, Hormones. or Solar Book?
Hormones. ships an update every 34 months, and Solar Book every 14 months. Most recently, Hormones. was updated on October 26, 2026 and Solar Book on October 24, 2026.

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