# Chromatic Gem vs Marble Stack

The clearest difference is update cadence: Marble Stack at every 2 months against Chromatic Gem's every 30 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chromatic Gem ships an update every 30 months, Marble Stack every 2 months. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Chromatic Gem | Marble Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 2 months** |
| Size | 7 MB | 135 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [灿标 朱](https://appshunter.io/developer/1246437769) | [Jung Yong Kim](https://appshunter.io/developer/1571297457) |

## What reviewers say

### Chromatic Gem

[App page](https://appshunter.io/ios/app/chromatic-gem/id1546827265)

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

**In-app purchases:** none


### Marble Stack

[App page](https://appshunter.io/ios/app/marble-stack/id6642671381)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chromatic Gem free?

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

### Is Marble Stack free?

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

### Do Chromatic Gem or Marble Stack have ads?

Neither Chromatic Gem nor Marble Stack shows ads.

### Which is updated more often, Chromatic Gem or Marble Stack?

Chromatic Gem ships an update every 30 months, and Marble Stack every 2 months. Most recently, Chromatic Gem was updated on October 5, 2026 and Marble Stack on October 9, 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.*