Comparison

Alien Sky vs Superimpose X

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

Head to head
About

Alien Sky

Transform ordinary photos into futuristic space scenes. Add planets, galaxies, stars, and lens flares to create otherworldly images. Customize your sky and give your photos a unique sci-fi feel.

Highlights
  • Space objects (planets, galaxies, moons)
  • Bright suns and distant stars
  • Futuristic lens flares
  • Sky customization
  • Sci-fi photo effects
Features
Read full description

Reality is boring! Create fantastic and futuristic visions with Alien Sky. With Alien Sky, you can customize your sky with an amazing collection of high resolution space objects. Alien Sky also includes a set of futuristic lens flares optimized for your space explorations. Alien Sky gives you complete control over sky customization, allowing you create fantastic visions and otherworldly photos. Why settle for a boring sky? There is simply nothing else like this in the app store. USER REVIEWS "Amazing app for creating cosmic creations and stellar sky scenes." "Fantastic app, create epic space images, just brilliant!" "This is an amazing photography app! There isn't another one in its class when it comes to photo FX!!! It allows you to take your images and give them a true SciFi feel. I love it and use it often!!!!" FEATURES - Space Objects such as Planets, Moons, and Galaxies - Bright Suns and Distant Stars - Futuristic Lens Flares Turn your everday photos into fantastic visions with Alien Sky.

About

Superimpose X

Create stunning photo art with advanced layering, blending, and masking tools. This powerful editor offers a wide array of adjustments, effects, and brushes for both professionals and amateurs. Save your work in sessions and reuse masked images as stickers.

Highlights
  • Multiple layers (up to 24)
  • Extensive adjustment and blending modes
  • AI-powered masking
  • Masking Library for reusable stickers
  • Session Library for project saving
  • Non-destructive editing and effects
  • Export PSD with layers
Features
Read full description

Superimpose X is a serious photo editor, and the editor is yours with the app — layers, masks, blend modes, brushes, effects, shadows, text and precision tools, with no subscription to use any of it. When you want more, two studios are built right in and unlock with a subscription: an AI Editor that generates and transforms images, and a true multi-track Video Editor. THE PHOTO EDITOR Build complex edits by hand with the control of a desktop app and none of the complexity. Cut out people and objects, combine images, paint masks, adjust colour, add depth and shadow, then refine every detail. • Layer-based editing with up to 24 layers • Magic Wand, Magic Lasso, brush and shape masks • 18 blend modes and 16 adjustment layers • Non-destructive layer blur and adjustments • 63 photo effects, plus clarity, colour, tone and detail controls • Text and curved text • Motion, Zoom, Spin, Lens and Selective Blur, and gradients • Warp, perspective transform and distortion • Paint, smudge, clone stamp and effect brushes • Shadow and Light Wrap tools • Camera fill with real-time masks and blend modes • Masking Library for reusable cutouts and stickers • Session Library that saves your projects automatically • PSD export with layers • Over a million royalty-free stock photos AI EDITOR Start from a photo, a sketch or a sentence and let AI do the heavy lifting, then take the result back into the layer editor to finish it properly. • Image generation from text • AI editing and inpainting • Background creation and replacement • Outpainting and image expansion • Enhance, relight and repair • Sketch to image • Headshot generation • Face swap • Image to image transformation • Image to video • AI people masking VIDEO EDITOR A real multi-track editor, not a template filler. • Edit video, images, audio and text on multiple tracks • Stack effects and animations for results that are yours • Masks for precise work, including green screen • Track objects through a shot and ramp clip speed • Animate text with elegant presets • Split, trim, rotate and freeze clips • Colour effects, blurs and distortions • Audio EQ, filters and transitions • Royalty-free photos, videos, music and GIFs • Export in a range of formats, including GIF ONE APP, ONE PROJECT The three studios share the same project. Composite a frame in the photo editor and drop it on the timeline. Generate a background with AI and mask it by hand. Pull a still out of a video and edit it as layers. Nothing is exported and re-imported just to move between them. Terms of use: https://www.superimposeapp.com/superimposex_terms_of_use.html Privacy Policy: https://www.superimposeapp.com/privacy2.html

Screenshots

Alien Sky4 screens
Superimpose X4 screens

Verdict

The call

The clearest difference is in-app purchases: Alien Sky at none against Superimpose X's 8. Alien Sky also leads on iOS requirement (12.4 vs 15.0). Superimpose X's advantage is update cadence (every 9 days vs every 5 weeks) and ratings volume (3K vs 132). On price, rating, review sentiment 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

CostPrice · In-app purchases · Ads · Monetization

Alien Sky costs $4.99 and Superimpose X $4.99 up front. Superimpose X sells 8 in-app purchases, starting at $2.99 per month. Alien Sky asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Alien Sky against 4.7 for Superimpose X. That said, the two scores are not equally well evidenced: Superimpose X has 3K ratings behind it against 132, so its average is the more settled of the two. Written reviews are what separate them: 83% of Alien Sky's written reviews are positive against 86% of Superimpose X's.

UpkeepUpdate frequency

Alien Sky ships an update every 5 weeks, Superimpose X every 9 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

Scorecard6 real differences · 5 level
Alien Sky versus Superimpose X: the parameters behind the verdict, then further details
ParameterAlien SkySuperimpose X
Price$4.99$4.99
Rating4.7 (132 ratings)4.7 (3K ratings)
Positive reviews83.1% of reviews85.6% of reviews — better
Number of ratings1323K — better
Update frequencyEvery 5 weeksEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#24 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.4 — better15.0
Further details — not scored
Size87 MB377 MB
Age rating4+4+
DeveloperJames GrotePankaj Goswami

Customer experience

Alien Sky

All ratings132 ratings
Positive93.9%
Neutral0.8%
Negative5.3%
Written reviews354 reviews
Positive83.1%
Neutral5.1%
Negative11.9%

Superimpose X

All ratings3,019 ratings
Positive92.5%
Neutral2.1%
Negative5.5%
Written reviews891 reviews
Positive85.6%
Neutral4.6%
Negative9.8%

Bugs and requests

Alien Sky

Not enough reviews yet to summarise bugs or requests.

Superimpose X

Reported bugs

4 issues
  • Masking tool issues causing halos
  • Text layer bugs causing loss of text
  • Inconsistent behavior when merging layers
  • Crashes when using certain effects

Requested features

6 requests
  • More layer support
  • Additional font and text options
  • Improved color adjustment tools
  • Custom brush settings
  • Ability to rearrange layer order
Show 1 more
  • Expanded stock image library

In-app purchases

None

Alien Sky

No in-app purchases

8 purchases

Superimpose X

Subscriptions6
  • Pro Membership (Monthly)$2.991 Month
  • Superimpose X (Monthly)$4.991 Month
  • AI Membership (Yearly)7 Days trial$17.991 Year
Show 3 more
  • Pro Membership (Yearly)$17.991 Year
  • Superimpose X Pro (Yearly)3 Days trial$34.991 Year
  • Superimpose X Pro (Yearly)$34.991 Year
One-time2
  • 500 Pro AI Coins$3.99
  • 1000 Pro AI Coins$6.99

Questions

Is Alien Sky free?
Alien Sky costs $4.99, with no in-app purchases.
Is Superimpose X free?
Superimpose X costs $4.99, and also offers in-app purchases.
Which has better reviews, Alien Sky or Superimpose X?
Alien Sky and Superimpose X are both rated 4.7 out of 5 on the App Store, from 132 and 3K ratings respectively.
Do Alien Sky or Superimpose X have ads?
Neither Alien Sky nor Superimpose X shows ads.
Which is updated more often, Alien Sky or Superimpose X?
Alien Sky ships an update every 5 weeks, and Superimpose X every 9 days. Most recently, Alien Sky was updated on October 17, 2026 and Superimpose X on October 16, 2026.

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