# Silverfish DX vs Space BlocKing

The clearest difference is price: Space BlocKing at Free against Silverfish DX's $1.99. Space BlocKing also leads on update cadence (monthly vs every 21 months). Silverfish DX's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.0). On in-app purchases and device support there is nothing between them.

Space BlocKing is free to download; Silverfish DX costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Silverfish DX ships an update every 21 months, Space BlocKing monthly. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Silverfish DX | Space BlocKing |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.5 (39 ratings)](https://appshunter.io/ios/app/silverfish-dx/id1052651366/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 21 months | **Monthly** |
| Monetization | Paid | — |
| Size | 26 MB | 87 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chaotic Box](https://appshunter.io/developer/293202011) | [QuantumBit . INC](https://appshunter.io/developer/1550218495) |

## What reviewers say

### Silverfish DX

[App page](https://appshunter.io/ios/app/silverfish-dx/id1052651366)

Engage in fast-paced arcade action by navigating through enemy swarms and collecting power-ups. This game offers a challenging experience designed for touchscreens, testing your reflexes against relentless space bugs.

**Highlights:** Weave through enemy swarms, Collect Power Pods, Turn tables on foes, Pure arcade action, Designed for touchscreens

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

**In-app purchases:** none


### Space BlocKing

[App page](https://appshunter.io/ios/app/space-blocking/id6446071212)

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

**In-app purchases:** none


## Frequently asked questions

### Is Silverfish DX free?

Silverfish DX costs $1.99, with no in-app purchases.

### Is Space BlocKing free?

Space BlocKing is free to download, with no in-app purchases.

### Do Silverfish DX or Space BlocKing have ads?

Space BlocKing shows ads; Silverfish DX does not.

### Which is updated more often, Silverfish DX or Space BlocKing?

Silverfish DX ships an update every 21 months, and Space BlocKing monthly. Most recently, Silverfish DX was updated on October 9, 2026 and Space BlocKing on October 8, 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.*