# OpEvol vs Space UI

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.

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.

## The numbers

| Metric | OpEvol | Space UI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/space-ui/id1494402514/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **27.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 3 MB | 190 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad, Apple TV | **iPhone, iPad, Mac, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Muddlegeist](https://appshunter.io/developer/701677888) | [256 Arts](https://appshunter.io/developer/1437835951) |

## What reviewers say

### OpEvol

[App page](https://appshunter.io/ios/app/opevol/id788355019)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpEvol Annual Subscription | $6.99 | per year |


### Space UI

[App page](https://appshunter.io/ios/app/space-ui/id1494402514)

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

**In-app purchases:** none


## Frequently asked 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 September 30, 2026 and Space UI on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*