Comparison

OpEvol vs Space UI

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

Head to head
About

OpEvol

Experience a dynamic, ever-changing display of psychedelic visuals inspired by 1960s Op Art. This app creates animated fields of geometric colors and contrasts for passive viewing or interactive play.

Highlights
  • Animated geometric patterns
  • Op Art inspired visuals
  • Psychedelic color displays
  • Interactive visual play
  • Air Display compatibility
Features
Read full description

Inspired by Op Art of the 1960s, OpEvol takes the geometric play of colors and contrasts and animates them into a moving field of ever-changing, optical, kinetic abstraction. It's for staring at. It's for sending to Air Display. Or an external monitor. Or a projector. It's something mesmerizing to design and watch evolve, or just leave on in the background as art. OpEvol Pro is an auto-renewing annual subscription (price shown in the app). Payment is charged to your Apple ID at purchase, and it renews automatically unless canceled at least 24 hours before the end of the period. Manage or cancel anytime in your Apple ID settings. Privacy Policy: https://muddlegeist.com/opevol/privacy Terms of Use (EULA): https://muddlegeist.com/opevol/terms

About

Space UI

Create realistic sci-fi user interfaces procedurally for video productions or personal projects. Features include interactive displays, alien languages, sound effects, and cross-device syncing. Users can also sync colors with smart home lights.

Highlights
  • Procedural UI generation
  • Interactive interfaces
  • Multiple alien languages
  • Sound effects
  • Save interface seeds
  • Cross-device syncing
  • HomeKit light sync
Features
Read full description

Turn your screens into a glowing starship control panel. Space UI generates a complete sci-fi console, from the shapes and fonts to the colors, sounds, and screen bezel. Every console is created from a single seed, so it looks like one consistent, working piece of starship hardware. Generate a new one whenever you like, and save the seeds you love. It's made for set dressing, film and video productions, cosplay, escape rooms, parties, and anyone who has ever wanted to sit at the helm. A Whole Bridge of Screens • Lock screen, planet scanner, galaxy map, targeting, shields, power, comms, and music pages • Imaginary alien languages and satisfying sound effects • Simulated emergencies that bring up onboard puzzles like Sudoku, Lights Out, and Dots and Boxes Sync a Whole Room • Devices on the same network share one design and react to the same events together • Place iPhones, iPads, Macs, and Apple TVs around a room for one seamless set • Devices with Ultra Wideband show each other's live distance and direction Bring in Real Lights • Control your HomeKit lights and outlets from a console page • Your HomeKit lights can flash and turn red during an emergency There's no real ship behind the buttons — just the most convincing console you've ever seen. Have an idea for a new element? Get in touch; many features started as a customer's suggestion.

Screenshots

OpEvol3 screens
Space UI4 screens

Verdict

The call

The clearest difference is in-app purchases: Space UI at none against OpEvol's 1. Space UI also leads on update cadence (every 2 months vs every 22 months) and device support (5 vs 3). OpEvol's advantage is review sentiment (27% vs 0%). On price, ads, monetization model and iOS requirement 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. OpEvol sells 1 in-app purchase, starting at $6.99 per year. Space UI asks for nothing beyond the download.

UpkeepUpdate frequency

OpEvol ships an update every 22 months, Space UI every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
OpEvol versus Space UI: the parameters behind the verdict, then further details
ParameterOpEvolSpace UI
PriceFreeFree
Rating—3.0 (2 ratings) — better
Positive reviews27.3% of reviews — better0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 22 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPad, Apple TViPhone, iPad, Mac, Apple TV, Vision Pro — better
Requires iOS26.0 — better27.0
Further details — not scored
Size3 MB183 MB
Age rating4+4+
DeveloperMuddlegeist256 Arts

Customer experience

OpEvol

Written reviews11 reviews
Positive27.3%
Neutral0.0%
Negative72.7%

Space UI

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

OpEvol

Subscriptions1
  • OpEvol Annual Subscription$6.991 Year
None

Space UI

No in-app purchases

Questions

Is OpEvol free?
OpEvol is free to download, with in-app purchases available.
Is Space UI free?
Space UI is free to download, with no in-app purchases.
Do OpEvol or Space UI have ads?
Neither OpEvol nor Space UI shows ads.
Which is updated more often, OpEvol or Space UI?
OpEvol ships an update every 22 months, and Space UI every 2 months. Most recently, OpEvol was updated on November 1, 2026 and Space UI on November 3, 2026.

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