# Block Invaders vs Digital Defence

The clearest difference is in-app purchases: Digital Defence at none against Block Invaders's 2. Digital Defence also leads on iOS requirement (11.0 vs 16.0). Block Invaders's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Block Invaders sells 2 one-off in-app purchases. Digital Defence asks for nothing beyond the download.

Block Invaders ships an update every 12 months, Digital Defence every 16 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Block Invaders | Digital Defence |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/digital-defence/id1626287978/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 12 months** | Every 16 months |
| Monetization | Free with in-app purchases | — |
| Size | 91 MB | 20 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [QED Gaming PTY. Ltd](https://appshunter.io/developer/441029909) | [Safak Yalcinkaya](https://appshunter.io/developer/1626278233) |

## What reviewers say

### Block Invaders

[App page](https://appshunter.io/ios/app/block-invaders-tower-defense/id980999892)

Command a planetary defense platform to shoot down waves of alien invaders. Strategically build and upgrade weapons, each with unique abilities, to counter diverse enemy behaviors and complete missions.

**Highlights:** Command orbital defense platform, Build and upgrade weapons, Shoot down incoming alien waves, Diverse invader behaviors, Multiple weapon abilities, Mission-based gameplay

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Earth Missions 6 to 10 | $0.99 | one-time |
| No Adverts | $1.99 | one-time |


### Digital Defence

[App page](https://appshunter.io/ios/app/digital-defence/id1626287978)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Block Invaders free?

Block Invaders is free to download, with in-app purchases available.

### Is Digital Defence free?

Digital Defence is free to download, with no in-app purchases.

### Do Block Invaders or Digital Defence have ads?

Digital Defence shows ads; Block Invaders does not.

### Which is updated more often, Block Invaders or Digital Defence?

Block Invaders ships an update every 12 months, and Digital Defence every 16 months. Most recently, Block Invaders was updated on October 20, 2026 and Digital Defence on October 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.*