OpEvol vs Space UI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Animated geometric patterns
- Op Art inspired visuals
- Psychedelic color displays
- Interactive visual play
- Air Display compatibility
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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
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.
- Procedural UI generation
- Interactive interfaces
- Multiple alien languages
- Sound effects
- Save interface seeds
- Cross-device syncing
- HomeKit light sync
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Generate and access great, realistic looking sci-fi user interfaces for use in video productions or hobby projects. FEATURES: • User interfaces are generated procedurally. • Interfaces are interactive. • Multiple imaginary alien languages. • Sound Effects • Save the seeds for interfaces you like. • Sync interface designs with multiple devices to create a seamless design that extends across multiple displays. • Sync interface colors with HomeKit lights. I encourage customers to contact me with additional UI element ideas that they want added to the app.
Screenshots
Verdict
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). OpEvol's advantage is review sentiment (27% vs 0%). On price, ads, monetization model 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
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.
OpEvol ships an update every 22 months, Space UI every 2 months. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.
| Parameter | OpEvol | Space UI |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 27.3% of reviews — better | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 22 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, Mac, Apple TV — better |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 3 MB | 190 MB |
| Age rating | 4+ | 4+ |
| Developer | Muddlegeist | 256 Arts |
Customer experience
OpEvol
Space UI
In-app purchases
OpEvol
- OpEvol Annual Subscription$6.991 Year
Space UI
No in-app purchases
