# Defend Earth! vs Knife Fall

The clearest difference is price: Defend Earth! at Free against Knife Fall's $0.99. Defend Earth! also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 12.0). On rating, ratings volume, update cadence and ads there is nothing between them.

Defend Earth! is free to download; Knife Fall costs $0.99 up front. Knife Fall sells 1 one-off in-app purchase. Defend Earth! asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Defend Earth! against 5.0 for Knife Fall. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 21, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Defend Earth! | Knife Fall |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/defend-earth/id1412795889/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/knife-fall-precision-game/id1536378577/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | **Free** | Paid |
| Size | 65 MB | 17 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Apple Watch |
| Age rating | 9+ | 9+ |
| Developer | [Matthew Barrie](https://appshunter.io/developer/954930653) | [Tocapp Games S.L.](https://appshunter.io/developer/1382683382) |

## What reviewers say

### Defend Earth!

[App page](https://appshunter.io/ios/app/defend-earth/id1412795889)

Protect Earth from incoming asteroids by maneuvering an orbital mega-shield. Tap to control the shield's rotation and thrust, deflecting threats before they strike the planet. Rise through the ranks as you defend humanity.

**Highlights:** Orbital mega-shield defense, Tap controls for rotation and thrust, Asteroid deflection gameplay, Rank progression system, Limited planet impact tolerance

**Features:** macOS Compatibility

**In-app purchases:** none


### Knife Fall

[App page](https://appshunter.io/ios/app/knife-fall-precision-game/id1536378577)

Tap to throw knives at rotating targets and cut them for points. Keep the knife in the air and avoid letting it fall. Unlock different knives as you play.

**Highlights:** Tap to throw knives, Cut rotating balls, Avoid letting the knife fall, Unlock different knives, Score points

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NoAdsAndUnlockAll | $1.99 | one-time |


## Frequently asked questions

### Is Defend Earth! free?

Defend Earth! is free to download, with no in-app purchases.

### Is Knife Fall free?

Knife Fall costs $0.99, and also offers in-app purchases.

### Which has better reviews, Defend Earth! or Knife Fall?

Defend Earth! and Knife Fall are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Defend Earth! or Knife Fall have ads?

Neither Defend Earth! nor Knife Fall shows ads.

### Which is updated more often, Defend Earth! or Knife Fall?

Defend Earth! ships an update every 4 months, and Knife Fall every 4 months. Most recently, Defend Earth! was updated on October 21, 2026 and Knife Fall on September 30, 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.*