Comparison

ACM interactions vs Nebulae

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

Head to head
About

ACM interactions

Features
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ACM interactions magazine is a mirror on the human-computer interaction and interaction design communities and beyond. Covering everything from applications of interactive technologies in specialized domains like healthcare and international development, to design theory, to current best practices in usability and user experience, interactions blends practice and research. This international magazine makes engaging human-computer interaction research accessible to practitioners and makes practitioners' voices heard by researchers. This application is powered by Godengo+Texterity, a leader in digital publishing technology, provider of hundreds of online digital publications and mobile magazine apps.

About

Nebulae

Features
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Nebulae! The most mysterious structures in the universe! Magnificent formations that seem the largest and most inaccessible. They are so far away that they can hardly be seen even with our telescopes. But we have put together images taken by the magnificent telescopes at ESO for you. FEATURES โ€ข In the "Browse" section, you will be able to quickly browse through hundreds of photos and also read detailed information about them. โ€ข In the "SlideShow" section, you will be able to browse through hundreds of impressive photos in full-screen size and feel as if you were in there at that moment. If you wish, you will be able to get detailed information about these impressive sights by tapping the Info button. Additionally, you can start auto-play by tapping the Play button on the top right. โ€ข In the "Gallery" section, you will be able to see all the photos impressively, show what you want in full screen, and when you want to examine them in detail, you can zoom in with the help of your fingers. โ€ข For those who do not want to be contented with just beautiful photos, there are many videos in the "Videos" section. โ€ข You will get detailed information about the ESO.

Screenshots

ACM interactions4 screens
Nebulae4 screens

Verdict

The call

The clearest difference is in-app purchases: ACM interactions at none against Nebulae's 1. ACM interactions also leads on ads (none vs shown) and iOS requirement (10.2 vs 13.0). On price, update cadence and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Nebulae sells 1 one-off in-app purchase. ACM interactions asks for nothing beyond the download.

UpkeepUpdate frequency

ACM interactions ships an update every 14 months, Nebulae every 22 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

Scorecard3 real differences ยท 3 level
ACM interactions versus Nebulae: the parameters behind the verdict, then further details
ParameterACM interactionsNebulae
PriceFreeFree
Update frequencyEvery 14 months โ€” betterEvery 22 months
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.2 โ€” better13.0
Further details โ€” not scored
Size21 MB1.3 GB
Age rating4+9+
DeveloperAssociation for Computing MachineryAlparslan Topbas

In-app purchases

None

ACM interactions

No in-app purchases

1 purchases

Nebulae

One-time1
  • Nebulae: Magnificent - AdFree$0.99

Questions

Is ACM interactions free?
ACM interactions is free to download, with no in-app purchases.
Is Nebulae free?
Nebulae is free to download, with in-app purchases available.
Do ACM interactions or Nebulae have ads?
Nebulae shows ads; ACM interactions does not.
Which is updated more often, ACM interactions or Nebulae?
ACM interactions ships an update every 14 months, and Nebulae every 22 months. Most recently, ACM interactions was updated on October 26, 2026 and Nebulae on October 30, 2026.

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