# Negentropy vs Unicursal

The clearest difference is in-app purchases: Unicursal at none against Negentropy's 7. Unicursal also leads on update cadence (weekly vs every 21 months) and iOS requirement (8.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Negentropy sells 7 one-off in-app purchases. Unicursal asks for nothing beyond the download.

Negentropy ships an update every 21 months, Unicursal weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Negentropy | Unicursal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/negentropy/id990270078/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 21 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 346 MB | 39 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Side Step Studios, LLC](https://appshunter.io/developer/912241443) | [健 王](https://appshunter.io/developer/590532062) |

## What reviewers say

### Negentropy

[App page](https://appshunter.io/ios/app/negentropy/id990270078)

Explore an old house by solving word puzzles in each room. Rearrange letters to escape entropy and advance to the next challenge. Can you master the wordplay to progress?

**Highlights:** Room-based puzzles, Letter rearrangement, Word formation, Progressive challenges, Escape entropy

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Puzzle Set 1 | $0.99 | one-time |
| Puzzle Set 2 | $0.99 | one-time |
| Puzzle Set 3 | $0.99 | one-time |
| Puzzle Set 4 | $0.99 | one-time |
| Puzzle Set 5 | $0.99 | one-time |
| Puzzle Set 6 | $0.99 | one-time |
| Puzzle Set 7 | $0.99 | one-time |


### Unicursal

[App page](https://appshunter.io/ios/app/unicursal/id1352129110)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Negentropy free?

Negentropy is free to download, with in-app purchases available.

### Is Unicursal free?

Unicursal is free to download, with no in-app purchases.

### Do Negentropy or Unicursal have ads?

Neither Negentropy nor Unicursal shows ads.

### Which is updated more often, Negentropy or Unicursal?

Negentropy ships an update every 21 months, and Unicursal weekly. Most recently, Negentropy was updated on October 24, 2026 and Unicursal on October 25, 2026.

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