# KLAC vs boop.

The clearest difference is price: boop. at Free against KLAC's $1.99. boop. also leads on rating (5.0 vs 4.5) and review sentiment (100% vs 75%). KLAC's advantage is ads (none vs shown) and ratings volume (141 vs 7). On in-app purchases, monetization model and device support there is nothing between them.

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

boop. 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 7, so its average is the more settled of the two. Written reviews point the same way: 75% of KLAC's written reviews are positive against 100% of boop.'s.

KLAC ships an update every 10 days, boop. every 3 days. The most recent releases landed on October 18, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | KLAC | boop. |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.5 (141 ratings)](https://appshunter.io/ios/app/klac/id1421420656/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/boop/id6479205625/reviews)** |
| Number of ratings | **141** | 7 |
| Positive reviews | 75.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#110** | — |
| Size | 25 MB | 35 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Giuseppe La Torre](https://appshunter.io/developer/1025335931) | [Joshua Shadik](https://appshunter.io/developer/1735161678) |

## What reviewers say

### KLAC

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

**Currently charting:** #110 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


### boop.

[App page](https://appshunter.io/ios/app/boop/id6479205625)

A minimalist puzzle game where you slide blocks to reach a goal. Features 50 challenging levels with unique jelly block physics. Offers both light and dark modes that adapt to your device.

**Highlights:** 50 challenging levels, Jelly block physics, Light and dark modes, Slide-to-move gameplay, Goal-oriented puzzles

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Expanded Undo | $0.99 | one-time |
| 15 Hints | $0.99 | one-time |
| 50 Hints | $1.99 | one-time |
| 100 Hints | $2.99 | one-time |


## Frequently asked questions

### Is KLAC free?

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

### Is boop. free?

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

### Which has better reviews, KLAC or boop.?

boop. is rated higher. KLAC averages 4.5 out of 5 from 141 ratings, while boop. averages 5.0 from 7 ratings.

### Do KLAC or boop. have ads?

boop. shows ads; KLAC does not.

### Which is updated more often, KLAC or boop.?

KLAC ships an update every 10 days, and boop. every 3 days. Most recently, KLAC was updated on October 18, 2026 and boop. on October 4, 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.*