Comparison

Superimpose vs Alien Sky

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

Head to head
About

Superimpose

This app allows for powerful multi-layer photo editing, enabling users to combine images, cut out objects, and blend them with various tools. It also integrates AI features for image generation, background removal, and enhancements, offering a comprehensive creative suite for visual content creation.

Highlights
  • Multi-layer photo editing
  • Combine and arrange image layers
  • AI image generation from text
  • AI-assisted background removal
  • Advanced masking tools
  • Blend modes for creative effects
  • Text tools for designs
Features
Read full description

Superimpose is a complete creative studio for photo editing, image compositing, video editing, and AI-powered visual creation. Build complex edits by hand with layers, masks, blend modes, brushes, effects, adjustments, shadows, text, blur, warp and perspective tools. Cut out people and objects, combine several images, paint masks, adjust colours, add depth and shadows, and refine every detail. When you want faster results, use AI to generate images from text, edit and repair photos, replace backgrounds, expand a picture beyond its edges, enhance details, relight a scene, create headshots, swap faces, turn a sketch into finished art, or animate a still photo into a short video. And it is not only about photos any more. A true multi-track video editor is built in, so one project can carry you from a single image to a finished video without ever leaving the app. PHOTO EDITING AND COMPOSITING • Layer-based editing with up to 24 layers • Advanced masking, including Magic Wand, Magic Lasso, brush masks 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 tools • Motion Blur, Zoom Blur, Spin Blur, Lens Blur, Selective Blur and Gradient tools • Warp, perspective transform and distortion tools • Paint, smudge, clone stamp and effect brushes • Built-in 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 • More than a million royalty-free stock photos VIDEO EDITING • Multi-track timeline for video, images, audio and text • Split, trim, rotate and freeze clips with ease • Speed control, including speed ramps • Keyframe animation with adjustable curves • Transitions between clips • Stack effects and animations on any track for unique results • Use masks for precise editing, including green screen and more • Audio from your device, voiceovers and royalty-free music • Stickers and animated GIFs • Royalty-free stock video and photos • Export in the format and resolution you choose AI TOOLS • AI people masking • AI image generation from text • AI image editing and inpainting • AI background creation and replacement • AI outpainting and image expansion • AI image enhancement • AI relighting • AI sketch-to-image creation • AI headshot generation • AI face swap • AI image-to-image transformation • AI image-to-video generation Whether you are making social posts, thumbnails, designs, artwork, product images, profile photos, memes, edits or professional composites, Superimpose X gives you manual precision and AI speed in one app. Start with an idea, a photo, a sketch, a video or a blank canvas. Superimpose gives you the freedom to create by hand, the speed of AI when you need it, and the control to make every result your own. Terms of use: https://www.superimposeapp.com/terms-of-use--superimpose-classic-.html Privacy Policy: https://www.superimposeapp.com/privacy2.html

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.

Screenshots

Superimpose4 screens
Alien Sky4 screens

Verdict

The call

The clearest difference is price: Superimpose at Free against Alien Sky's $4.99. Superimpose also leads on ratings volume (3.2K vs 132) and update cadence (fortnightly vs every 5 weeks). Alien Sky's advantage is in-app purchases (none vs 8) and rating (4.7 vs 4.5). On review sentiment, ads and device support 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

Superimpose is free to download; Alien Sky costs $4.99 up front. Superimpose 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

Alien Sky holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Superimpose has 3.2K ratings behind it against 132, so its average is the more settled of the two. Written reviews point the same way: 77% of Superimpose's written reviews are positive against 83% of Alien Sky's.

UpkeepUpdate frequency

Superimpose ships an update fortnightly, Alien Sky every 5 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

Scorecard7 real differences · 3 level
Superimpose versus Alien Sky: the parameters behind the verdict, then further details
ParameterSuperimposeAlien Sky
PriceFree — better$4.99
Rating4.5 (3.2K ratings)4.7 (132 ratings) — better
Positive reviews77.1% of reviews83.1% of reviews — better
Number of ratings3.2K — better132
Update frequencyFortnightly — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.4 — better
Further details — not scored
Size380 MB87 MB
Age rating4+4+
DeveloperPankaj GoswamiJames Grote

Customer experience

Superimpose

All ratings3,197 ratings
Positive87.3%
Neutral2.1%
Negative10.6%
Written reviews599 reviews
Positive77.1%
Neutral2.5%
Negative20.4%

Alien Sky

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

Bugs and requests

Superimpose

Reported bugs

4 issues
  • Freezing and crashing issues
  • Saved images losing quality
  • Masking tools not working as expected
  • Imported images not displaying properly

Requested features

5 requests
  • Undo/redo functionality
  • Ability to save and resume projects
  • Background blending tools
  • Improved layer management
  • Automatic background removal

Alien Sky

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Superimpose

Subscriptions6
  • Superimpose Premium$2.991 Month
  • Superimpose (Monthly)$4.991 Month
  • Full Access Yearly$17.991 Year
Show 3 more
  • Full Access Yearly7 Days trial$17.991 Year
  • Superimpose Pro (Yearly)3 Days trial$34.991 Year
  • Superimpose Pro (Yearly)$34.991 Year
One-time2
  • 500 Pro AI Coins$3.99
  • 1000 Pro AI Coins$6.99
None

Alien Sky

No in-app purchases

Questions

Is Superimpose free?
Superimpose is free to download, with in-app purchases available.
Is Alien Sky free?
Alien Sky costs $4.99, with no in-app purchases.
Which has better reviews, Superimpose or Alien Sky?
Alien Sky is rated higher. Superimpose averages 4.5 out of 5 from 3.2K ratings, while Alien Sky averages 4.7 from 132 ratings.
Do Superimpose or Alien Sky have ads?
Neither Superimpose nor Alien Sky shows ads.
Which is updated more often, Superimpose or Alien Sky?
Superimpose ships an update fortnightly, and Alien Sky every 5 weeks. Most recently, Superimpose was updated on October 10, 2026 and Alien Sky on October 14, 2026.

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