Comparison

SkyORB ∞ Astronomy vs Flat Earth Pro

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

Head to head
About

SkyORB ∞ Astronomy

Explore the universe with an interactive 3D star map, real-time celestial positions, and a 14-day schedule of astronomical events. Identify stars and planets using augmented reality and access detailed information about celestial bodies.

Highlights
  • Interactive 3D star map
  • Real-time celestial positions
  • Augmented Reality (AR) identification
  • 14-day astronomical event schedule
  • Detailed planet and celestial body information
  • Time shift feature for celestial events
Features
Read full description

SkyORB ∞ — The Premium Version of SkyORB Classic SkyORB ∞ is the premium edition of SkyORB Classic, created for users who want the most complete and refined SkyORB experience. It features better sky maps, more advanced 2D and 3D charts, richer astronomy information, improved navigation, and a modern interface for exploring the night sky. Built on more than 20 years of astronomy app development, SkyORB ∞ brings together interactive 2D and 3D sky maps, real-time planet and star positions, Augmented Reality sky identification, detailed Moon and Sun information, astronomy events, Apple Watch support, and a refined interface optimized for the latest Apple devices. SkyORB ∞ is a one-time purchase with no ads, no subscriptions, and no in-app purchases. Every feature is included. ### Why choose SkyORB ∞? SkyORB Classic makes astronomy accessible to everyone. SkyORB ∞ goes further with clearer and more detailed sky maps, improved stereographic and orbit charts, a cleaner interface, deeper sky information, and premium features designed for iPhone, iPad, and Apple Watch. ### Main Features Explore an interactive 3D sky map with stars, planets, constellations, comets, satellites, and deep-sky objects. Navigate redesigned 2D sky and orbit charts with curved labels, clearer constellation names, smart overlap reduction, panning, automatic framing, and detailed satellite and comet trails. Use Augmented Reality to identify stars, planets, and constellations by pointing your device at the sky. Follow the Sun and Moon with rise and set times, moon phases, and daily sky information for your location. Travel through time to see the sky in the past or future and prepare for upcoming celestial events. Check a 14-day astronomy calendar with Moon phases, planetary events, meteor showers, and other sky highlights. Discover detailed information about planets, the Moon, Messier objects, and famous astronomers. Stay connected with Apple Watch support, including quick access to useful astronomy information from your wrist. Enjoy a modern, refined interface designed for recent iPhone and iPad models. ### Premium, Simple, Yours SkyORB ∞ is made for users who want the best version of SkyORB: more complete, more precise, more comfortable to use, and entirely free from ads, subscriptions, and in-app purchases. Whether you are a casual stargazer, an astronomy enthusiast, or a long-time SkyORB user, SkyORB ∞ gives you a powerful and beautiful way to explore the universe. Upgrade from SkyORB Classic to SkyORB ∞ and enjoy the premium way to discover the night sky.

About

Flat Earth Pro

Visualize celestial body positions, daylight coverage, and moon phases on an Earth projection. Explore sun and moon overhead positions, rise/set times, and lunar details. Features offline functionality and a local weather forecast.

Highlights
  • Daylight coverage visualization
  • Sun and moon overhead positions
  • Rise and set times
  • Moon phases and libration
  • Offline functionality
  • Local weather forecast
Features
Read full description

Flat Earth app is a tool used to visualise daylight coverage, sun and moon overhead positions, rise and set times, moon phases, lunar parallactic angle and liberations, and much more in a simple and easy to read Azimuthal projection of the earth. Once you start the application, you will be informed immediately about the current zenith (overhead) position of the sun and moon, the current phase and parallactic angle of the moon, day and night map and much more relative to any observer position on earth. With one touch you can rotate clockwise or counter-clockwise to move time to the future or to the past and visualise the orbital motion of Sun, Moon, and 5 more optional celestial bodies realtime and with great accuracy. All of the core features of the app work offline including time zones. The graphical positions of the celestial bodies on the map represent the zenith (overhead) position relative to the app time. The direction of the celestial body (azimuth) in your local sky and its altitude can be visualised as well as the sky dome relative to any location through the navigation tab. The Flat Earth Application includes: - Lunar Perigee and Apogee in realtime as well as event schedule. - Lunar Phases in realtime as well as event schedule. - Local and regular Compass, and directions for the current sky position for all of the available celestial bodies. - Altitude , azimuth and current zenith position are featured and easily accessible for every feature celestial body. - Day light coverage visualisation over the earth for any particular time instant. - The rise and set times for any location on earth for all the of the available celestial bodies. - All time zones. - Moon libration and Orientation at any date and time and at any location. - Unique local weather forecast integrated within the app in app time controller. - Unlimited Moon, Sun and Earth Data at ANY date and time. - The ability to take and share a high resolution shot of the earth a moon. - Custom Notification at any date and time.

Screenshots

SkyORB ∞ Astronomy4 screens
Flat Earth Pro4 screens

Verdict

The call

The clearest difference is review sentiment: Flat Earth Pro at 81% against SkyORB ∞ Astronomy's 0%. Flat Earth Pro also leads on iOS requirement (13.0 vs 15.6). SkyORB ∞ Astronomy's advantage is device support (5 vs 3) and price ($2.99 vs $3.99). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

SkyORB ∞ Astronomy costs $2.99 and Flat Earth Pro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SkyORB ∞ Astronomy ships an update every 2 months, Flat Earth Pro every 6 weeks. The most recent releases landed on August 7, 2026 and September 30, 2026 respectively.

Scorecard5 real differences · 5 level
SkyORB ∞ Astronomy versus Flat Earth Pro: the parameters behind the verdict, then further details
ParameterSkyORB ∞ AstronomyFlat Earth Pro
Price$2.99 — better$3.99
Rating—4.9 (108 ratings) — better
Positive reviews0.0% of reviews81.3% of reviews — better
Number of ratings—108 — better
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Apple TV, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size303 MB224 MB
Age rating4+4+
DeveloperStephane DenisOthman Alzahrani

Customer experience

SkyORB ∞ Astronomy

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Flat Earth Pro

All ratings108 ratings
Positive97.2%
Neutral0.0%
Negative2.8%
Written reviews32 reviews
Positive81.3%
Neutral0.0%
Negative18.8%

In-app purchases

None

SkyORB ∞ Astronomy

No in-app purchases

None

Flat Earth Pro

No in-app purchases

Questions

Is SkyORB ∞ Astronomy free?
SkyORB ∞ Astronomy costs $2.99, with no in-app purchases.
Is Flat Earth Pro free?
Flat Earth Pro costs $3.99, with no in-app purchases.
Do SkyORB ∞ Astronomy or Flat Earth Pro have ads?
Neither SkyORB ∞ Astronomy nor Flat Earth Pro shows ads.
Which is updated more often, SkyORB ∞ Astronomy or Flat Earth Pro?
SkyORB ∞ Astronomy ships an update every 2 months, and Flat Earth Pro every 6 weeks. Most recently, SkyORB ∞ Astronomy was updated on August 7, 2026 and Flat Earth Pro on September 30, 2026.

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