Zodiac Constellations Guide vs Astronomy Observer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zodiac Constellations Guide
Explore the night sky and discover the 12 zodiac constellations with stunning 3D models. Rotate, zoom, and compare them to real star patterns. Perfect for astronomy and astrology enthusiasts.
- Interactive 3D constellation models
- Zoom and rotate functionality
- Compare models to night sky
- Information on zodiac sign dates
- Stunning graphics and visual effects
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What zodiac sign were you born under? Interested in astronomy or astrology? Love observing the night sky full of constellations and stars? With this astronomy app, you will discover the dates of the twelve zodiac signs and observe amazing 3D models of constellations, look at them from aside, zoom in and out, rotate in different directions, and check them with the star patterns in the night sky. Enjoy the 3D models of 12 zodiac signs: ◆ Aries ◆ Taurus ◆ Gemini ◆ Cancer ◆ Leo ◆ Virgo ◆ Libra ◆ Scorpio ◆ Sagittarius ◆ Capricorn ◆ Aquarius ◆ Pisces Even if you are not an astronomy lover, you will definitely enjoy contemplating zodiac constellations in this app. Stunning graphics and visual effects of our 3D models of constellations will blow you away. By the way, did you know that... The zodiac, the 12 signs listed in a horoscope, is closely tied to how the Earth moves through the heavens. The zodiac signs are derived from the constellations that mark out the path on which the Sun appears to travel over the course of a year. You might think that dates in a horoscope correspond to when the Sun passes through each constellation. However, much of the time, they don’t because astrology and astronomy are different systems. Please note that this astronomy app includes only 12 constellations; you can find all 88 constellations in Star Walk 2, one of the most popular stargazing apps. If you love exploring the stars and the night sky, this is a must-have astronomy app for you. Your feedback is welcome! Enjoy!
Astronomy Observer
This app helps astronomical observers plan their viewing sessions by calculating and displaying the positions of celestial bodies. It offers AR views, a catalog of stars and deep sky objects, and an astronomical event calendar. Premium features include ad-free viewing and access to a year of ephemeris data.
- AR celestial body positioning
- Daily sun-moon position and planet rise/set
- Catalog of stars, planets, and deep sky objects
- Astronomical event calendar
- Yearly ephemeris calculation
- Constellation and star identification
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Astronomy Observer app is an app that help astronomical observers to arrange their observation plans reasonably. Thanks to the improvement of the computing power of mobile phones and the application of new technologies (AR), it is possible to calculate the position of celestial bodies and the celestial ephemeris on the mobile phone, and AR can display the positions of celestial bodies. The Astronomy Observer not only calculates the daily sun-moon position, planets rise and set, constellations, important stars, and messier objects which can be seen . In addition, various types of celestial bodies and important star catalogs are also collected, and the position, rise and set of each celestial body are calculated, and finally the ephemeris of the celestial body is calculated for one year. AR shows the constellation division, constellation position, star position, important star display, solar system celestial position. The App is divided into the following parts 1. Daily: Daily twilight, moonrise and moonset, planets, and constellations, stars, messier 2. Browse: Browse constellations, stars, solar systems (sun, moon, planet, comet), deep sky objects (messier, galaxy, star clusters, nebulae), important star catalogs (HR, HD, HIP, SAO, CCDM, GCVS, TYChO, NGC) 3. Event: Calendar of astronomical phenomen 4. AR: AR shows the position of celestial bodies 5. Mine: 【Astronomy Observer Membership】 View all the celestial bodies catalog, One year ephemeris for all celestial bodies can be viewed, View AR images of any time,no ads Purchase rules: [Monthly Membership] Purchase a monthly member for $ 0.99 / month and renew it automatically every month. [Annual Membership] 4.99 $ / year to purchase annual annual membership and automatically renew it annually. [Lifetime Membership] $ 14.99, only need to purchase once, valid for life [Prices in different countries or regions should be converted according to the US dollar exchange rate] Purchase Notes: 1. The account will be automatically renewed and deducted the corresponding fee 1 day before the expiration. 2. If you need to cancel the renewal, please cancel in your personal iTunes account at least 1 day in advance. 3. After purchase, users can manage or turn off automatic renewal in personal account settings. Terms of Services : http://www.astronomyobserver.net/h5/astronomy/user/en Privacy policy: http://www.astronomyobserver.net/h5/astronomy/privacy/en
Screenshots
Verdict
The clearest difference is rating: Astronomy Observer at 4.6 against Zodiac Constellations Guide's 4.0. Astronomy Observer also leads on update cadence (monthly vs every 24 months) and iOS requirement (11.0 vs 15.0). Zodiac Constellations Guide's advantage is in-app purchases (none vs 3). On price, review sentiment, ratings volume and ads 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. Astronomy Observer sells 3 in-app purchases, starting at $0.99 per month. Zodiac Constellations Guide asks for nothing beyond the download.
Astronomy Observer holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 38 and 28 respectively. Written reviews point the same way: 55% of Zodiac Constellations Guide's written reviews are positive against 58% of Astronomy Observer's.
Zodiac Constellations Guide ships an update every 24 months, Astronomy Observer monthly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Zodiac Constellations Guide | Astronomy Observer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (38 ratings) | 4.6 (28 ratings) — better |
| Positive reviews | 54.5% of reviews | 58.3% of reviews — better |
| Number of ratings | 38 — better | 28 |
| Update frequency | Every 24 months | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 155 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Vito Technology Inc. | 雪平 王 |
Customer experience
Zodiac Constellations Guide
Astronomy Observer
In-app purchases
Zodiac Constellations Guide
No in-app purchases
Astronomy Observer
- Monthly membership$0.991 Month
- Annually Membership$5.991 Year
- lifetime membership$14.99





