# Ninja Star Dojo vs Gem Digger

The clearest difference is in-app purchases: Ninja Star Dojo at none against Gem Digger's 6. Ninja Star Dojo also leads on ads (none vs shown). Gem Digger's advantage is update cadence (every 3 months vs every 119 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Gem Digger sells 6 one-off in-app purchases. Ninja Star Dojo asks for nothing beyond the download.

Ninja Star Dojo ships an update every 119 months, Gem Digger every 3 months. The most recent releases landed on September 7, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Ninja Star Dojo | Gem Digger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ninja-star-dojo/id964986565/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 119 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 49 MB | 52 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Brian TEETER](https://appshunter.io/developer/314924853) | [Seif Ibrahim](https://appshunter.io/developer/1173469733) |

## What reviewers say

### Ninja Star Dojo

[App page](https://appshunter.io/ios/app/ninja-star-dojo/id964986565)

Engage in fast-paced action by selecting a ninja and launching stars to destroy approaching balls. Match colors for powerful combos and high scores across 25 challenging levels. Enjoy retina-quality graphics and custom soundtracks.

**Highlights:** 3 Ninja characters, 25 action-packed levels, Color matching combos, Retina quality graphics, Custom sound tracks, Unlockable content through gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### Gem Digger

[App page](https://appshunter.io/ios/app/gem-digger-cave-quest/id6780266274)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crystal Caves | $2.99 | one-time |
| Magma Depths | $2.99 | one-time |
| Frozen Hollow | $2.99 | one-time |
| Remove Ads | $3.99 | one-time |
| Unlock All Worlds | $6.99 | one-time |
| Complete Edition | $9.99 | one-time |


## Frequently asked questions

### Is Ninja Star Dojo free?

Ninja Star Dojo is free to download, with no in-app purchases.

### Is Gem Digger free?

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

### Do Ninja Star Dojo or Gem Digger have ads?

Gem Digger shows ads; Ninja Star Dojo does not.

### Which is updated more often, Ninja Star Dojo or Gem Digger?

Ninja Star Dojo ships an update every 119 months, and Gem Digger every 3 months. Most recently, Ninja Star Dojo was updated on September 7, 2026 and Gem Digger on September 24, 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.*