Comparison

xSky vs X

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

Head to head
About

xSky

Explore the cosmos with a virtual telescope. Point your device at the sky to identify celestial bodies. Zoom in for detailed views and use a search function to locate specific objects.

Highlights
  • Virtual telescope functionality
  • Identify Sun, Moon, Planets, Stars, Galaxies
  • Zoom up to a million times
  • Screen lock to stop motion
  • Object search arrow
  • Soft music and sound effects
Features
Read full description

xSky is a simple to use virtual telescope app. Just look at the sky through your device. Lock the screen and zoom in to explore in more detail. Features: • Sun, Moon, Planets, Galilean Moons, Stars, Constellations and Galaxies. • Pinch the screen to zoom up to a million times. • Use lock button to stop motions. • Search arrow will help to locate any object in the sky. • Soft music and sound effects.

About

X

Explore the solar system, Earth's atmosphere, and its structure with engaging audio and video content. This app offers an entertaining and educational journey for all ages, created by a team of experts.

Highlights
  • Audio guides for Solar System Trail
  • On-demand content
  • Audio and video on Earth's atmosphere
  • Content on Earth's structure
  • Solar System exploration
  • Expert-created content
Features
Read full description

Use the free Audio Guides and add another dimension to the Solar System Trail walk or enjoy the on-demand content. The App offers audio and video content about The Atmosphere, The Structure of the Earth and The Solar System. It is the collaborative work of scientists, writers, space artists and voice actors. Its aim is to deliver fun, entertaining and educational content to suit younger and older users alike. Get a new perspective as you go on a journey across the Solar System, fly to the top of the Atmosphere or descend on a Journey to the Center of the Earth.

Screenshots

xSky4 screens
X4 screens

Verdict

The call

The clearest difference is review sentiment: xSky at 79% against X's 0%. xSky also leads on rating (4.3 vs 1.3) and in-app purchases (none vs 10). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. X sells 10 one-off in-app purchases. xSky asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

xSky holds the better App Store score, 4.3 against 1.3. That said, the two scores are not equally well evidenced: xSky has 80 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 79% of xSky's written reviews are positive against 0% of X's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
xSky versus X: the parameters behind the verdict, then further details
ParameterxSkyX
PriceFreeFree
Rating4.3 (80 ratings) — better1.3 (3 ratings)
Positive reviews79.4% of reviews — better0.0% of reviews
Number of ratings80 — better3
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.6 — better
Further details — not scored
Size60 MB46 MB
Age rating4+4+
DeveloperOleg SurRoni Waserman

Customer experience

xSky

All ratings75 ratings
Positive74.7%
Neutral13.3%
Negative12.0%
Written reviews155 reviews
Positive79.4%
Neutral5.2%
Negative15.5%

X

All ratings3 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

xSky

Reported bugs

9 issues
  • App keeps crashing
  • Location services not working/picking a country
  • App closes immediately upon opening
  • App is glitchy and moves by itself
  • Search button not working in horizontal position
Show 4 more
  • App not working on iPhone 12
  • App out of sync with reality
  • Sun located incorrectly at noon
  • Mercury in retrograde causing app to not open

Requested features

9 requests
  • Camera feature for high-quality photos
  • Ability to turn down exposure for photos
  • Facts read aloud about celestial objects
  • Traditional constellation names (e.g., Virgo, Taurus)
  • Show International Space Station or other satellites
Show 4 more
  • Option to turn off constellation lines
  • Improve search button size and usability
  • Fix search button in horizontal mode
  • More mythological graphics and information about stars

X

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

xSky

No in-app purchases

10 purchases

X

One-time10
  • A Comet's Journey$0.99
  • Journey To The Centre Of Earth$0.99
  • A Mission To Mars$0.99
Show 7 more
  • A Mission To The ISS$0.99
  • A Voyage To Saturn$0.99
  • Solar System Experience$0.99
  • The World Under Our Feet$0.99
  • Tour The Atmosphere$0.99
  • When Dinosaurs Moved$0.99
  • Moons Of The Solar System$0.99

Questions

Is xSky free?
xSky is free to download, with no in-app purchases.
Is X free?
X is free to download, with in-app purchases available.
Which has better reviews, xSky or X?
xSky is rated higher. xSky averages 4.3 out of 5 from 80 ratings, while X averages 1.3 from 3 ratings.
Do xSky or X have ads?
Neither xSky nor X shows ads.
Which is updated more often, xSky or X?
xSky ships an update every 3 months, and X every 3 months. Most recently, xSky was updated on October 20, 2026 and X on October 24, 2026.

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