# Grav Box vs Sembl

The clearest difference is rating: Grav Box at 4.8 against Sembl's 4.2. Grav Box also leads on review sentiment (96% vs 74%). Sembl's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 5 months). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Grav Box sells 10 one-off in-app purchases and Sembl sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Grav Box holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 26 and 21 respectively. Written reviews point the same way: 96% of Grav Box's written reviews are positive against 74% of Sembl's.

Grav Box ships an update every 5 months, Sembl every 3 weeks. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Grav Box | Sembl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (26 ratings)](https://appshunter.io/ios/app/grav-box/id1050320618/reviews)** | [4.2 (21 ratings)](https://appshunter.io/ios/app/sembl/id1125056602/reviews) |
| Number of ratings | **26** | 21 |
| Positive reviews | **96.0% of reviews** | 73.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 52 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gianluca Capraro](https://appshunter.io/developer/1691787728) | [Artgig Studio](https://appshunter.io/developer/436414537) |

## What reviewers say

### Grav Box

[App page](https://appshunter.io/ios/app/grav-box/id1050320618)

Control gravity with a tap and hold to manipulate objects. Customize their appearance, explore dynamic physics, and engage in arcade challenges with leaderboards and achievements.

**Highlights:** Tap and hold to control gravity, Customize grav colors and emojis, Dynamic backgrounds and physics effects, Arcade mode with achievements, Global leaderboards, In-game events like black holes

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold Blocks (100) Pack | $0.99 | one-time |
| Light Portal | $0.99 | one-time |
| Dark Portal | $0.99 | one-time |
| Grav Box | $0.99 | one-time |
| Midnight | $0.99 | one-time |
| Daybreak | $0.99 | one-time |
| Beach | $0.99 | one-time |
| Jungle | $0.99 | one-time |
| Mist | $0.99 | one-time |
| Gold Blocks (1000) Pack | $4.99 | one-time |


### Sembl

[App page](https://appshunter.io/ios/app/sembl/id1125056602)

Engage in a unique puzzle experience where you create designs through various artistic actions. Master over 190 levels at your own pace or test your speed in timed challenges. Enjoy minimalist graphics and serene music.

**Highlights:** Unique design puzzles, Paint, cut, punch, stencil, spin, 32 levels, Over 190 puzzles, Journey mode, Challenge mode, Minimalist graphics, Serene sound

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all ads | $1.99 | one-time |


## Frequently asked questions

### Is Grav Box free?

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

### Is Sembl free?

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

### Which has better reviews, Grav Box or Sembl?

Grav Box is rated higher. Grav Box averages 4.8 out of 5 from 26 ratings, while Sembl averages 4.2 from 21 ratings.

### Do Grav Box or Sembl have ads?

Grav Box shows ads; Sembl does not.

### Which is updated more often, Grav Box or Sembl?

Grav Box ships an update every 5 months, and Sembl every 3 weeks. Most recently, Grav Box was updated on October 13, 2026 and Sembl on October 16, 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.*