# Spark Mk1 vs Sticky Castle

The clearest difference is in-app purchases: Sticky Castle at none against Spark Mk1's 1. Sticky Castle also leads on iOS requirement (11.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Spark Mk1 sells 1 one-off in-app purchase. Sticky Castle asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Spark Mk1 | Sticky Castle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/spark-mk1/id1553283149/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 75 MB | 203 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Zylos Games LLC](https://appshunter.io/developer/1553283151) | [Leon Schrijvers](https://appshunter.io/developer/1607573850) |

## What reviewers say

### Spark Mk1

[App page](https://appshunter.io/ios/app/spark-mk1/id1553283149)

Engage in a fast-paced action game where you infiltrate a corporation's network to save the world. Navigate system defenses using on-screen or tilt controls, master levels through replay, and compete on leaderboards. Unlock the full game to experience all levels and boss fights.

**Highlights:** Fast-paced non-stop action, On-screen D-Pad or tilt controls, Full story mode, Challenge mode with score multipliers, Game Center support, Leaderboards and achievements

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Game | $1.99 | one-time |


### Sticky Castle

[App page](https://appshunter.io/ios/app/sticky-castle/id1607573847)

**In-app purchases:** none


## Frequently asked questions

### Is Spark Mk1 free?

Spark Mk1 is free to download, with in-app purchases available.

### Is Sticky Castle free?

Sticky Castle is free to download, with no in-app purchases.

### Do Spark Mk1 or Sticky Castle have ads?

Neither Spark Mk1 nor Sticky Castle shows ads.

### Which is updated more often, Spark Mk1 or Sticky Castle?

Spark Mk1 ships an update every 2 months, and Sticky Castle every 2 months. Most recently, Spark Mk1 was updated on November 3, 2026 and Sticky Castle on November 3, 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.*