# Grav Box vs Atom Shell

The clearest difference is in-app purchases: Atom Shell at none against Grav Box's 10. Atom Shell also leads on ads (none vs shown) and iOS requirement (9.0 vs 14.0). Grav Box's advantage is rating (4.8 vs 4.5) and ratings volume (26 vs 2). On price, review sentiment, update cadence and device support there is nothing between them.

Both are free to download. Grav Box sells 10 one-off in-app purchases. Atom Shell asks for nothing beyond the download.

Grav Box holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Grav Box has 26 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 96% of Grav Box's written reviews are positive against 100% of Atom Shell's, so the app with the better star average is not the one people write more warmly about.

Grav Box ships an update every 5 months, Atom Shell every 6 months. The most recent releases landed on September 17, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Grav Box | Atom Shell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (26 ratings)](https://appshunter.io/ios/app/grav-box/id1050320618/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/atom-shell/id1477722075/reviews) |
| Number of ratings | **26** | 2 |
| Positive reviews | 96.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 149 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) | [Kamran Gasimov](https://appshunter.io/developer/1458237538) |

## 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 |


### Atom Shell

[App page](https://appshunter.io/ios/app/atom-shell/id1477722075)

A puzzle game where players strategically place electrons into inner shells to score points. With over 1000 levels, it offers a challenging and engaging experience for players of all ages.

**Highlights:** Electron placement mechanics, Scoring system, 1000+ levels, Intuitive gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Grav Box free?

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

### Is Atom Shell free?

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

### Which has better reviews, Grav Box or Atom Shell?

Grav Box is rated higher. Grav Box averages 4.8 out of 5 from 26 ratings, while Atom Shell averages 4.5 from 2 ratings.

### Do Grav Box or Atom Shell have ads?

Grav Box shows ads; Atom Shell does not.

### Which is updated more often, Grav Box or Atom Shell?

Grav Box ships an update every 5 months, and Atom Shell every 6 months. Most recently, Grav Box was updated on September 17, 2026 and Atom Shell on September 12, 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.*