# Negentropy vs KLAC

The clearest difference is price: Negentropy at Free against KLAC's $1.99. Negentropy also leads on rating (5.0 vs 4.5) and review sentiment (100% vs 75%). KLAC's advantage is update cadence (every 10 days vs every 21 months) and ratings volume (141 vs 2). On ads, in-app purchases, monetization model and device support there is nothing between them.

Negentropy is free to download; KLAC costs $1.99 up front. Negentropy sells 7 one-off in-app purchases and KLAC sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Negentropy holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: KLAC has 141 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Negentropy's written reviews are positive against 75% of KLAC's.

Negentropy ships an update every 21 months, KLAC every 10 days. The most recent releases landed on October 3, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Negentropy | KLAC |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/negentropy/id990270078/reviews)** | [4.5 (141 ratings)](https://appshunter.io/ios/app/klac/id1421420656/reviews) |
| Number of ratings | 2 | **141** |
| Positive reviews | **100.0% of reviews** | 75.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 10 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#106** |
| Size | 346 MB | 25 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Side Step Studios, LLC](https://appshunter.io/developer/912241443) | [Giuseppe La Torre](https://appshunter.io/developer/1025335931) |

## 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 |


### KLAC

[App page](https://appshunter.io/ios/app/klac/id1421420656)

**Currently charting:** #106 Top Paid · Word (US App Store)

A challenging spatial-word puzzle game where you snap, split, and stick letter blocks. It offers a minimal yet engaging experience designed to be difficult and wonderful. Your progress syncs across devices thanks to iCloud.

**Highlights:** Snap, split, and stick letter blocks, Spatial-word puzzle gameplay, Minimalist design, Challenging difficulty, iCloud progress sync, Available on macOS

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra Support | $0.99 | one-time |
| Small Donation | $0.99 | one-time |
| Medium Donation | $1.99 | one-time |
| Big Donation | $3.99 | one-time |

**What reviewers like**

- 💡 Original and innovative mechanics
- ✨ Beautiful and minimalist aesthetic
- 🧠 Challenging and thought-provoking puzzles
- 😌 Satisfying to solve difficult levels
- 👍 Simple and elegant design

**What reviewers complain about**

- ❓ Unclear mechanics and lack of explanation
- 🐛 Bugs and glitches on some levels
- 📉 Too few levels, feels short
- 🤔 Counterintuitive at the beginning
- 📱 Some users experience performance issues (heating)

**Reported bugs**

- Last level has some bugs
- Game won't load level 1
- No sound or music on iPhone X
- Game doesn't start/stops at initial screen

**Requested features**

- More levels
- Hint system
- Trial game before purchase
- More help/explanation for mechanics


## Frequently asked questions

### Is Negentropy free?

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

### Is KLAC free?

KLAC costs $1.99, and also offers in-app purchases.

### Which has better reviews, Negentropy or KLAC?

Negentropy is rated higher. Negentropy averages 5.0 out of 5 from 2 ratings, while KLAC averages 4.5 from 141 ratings.

### Do Negentropy or KLAC have ads?

Neither Negentropy nor KLAC shows ads.

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

Negentropy ships an update every 21 months, and KLAC every 10 days. Most recently, Negentropy was updated on October 3, 2026 and KLAC on October 20, 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.*