# Castle Guardians 3D vs Killers Instinct

The clearest difference is in-app purchases: Castle Guardians 3D at none against Killers Instinct's 4. Castle Guardians 3D also leads on update cadence (fortnightly vs every 8 months) and iOS requirement (11.0 vs 13.0). Killers Instinct's advantage is ads (none vs shown). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Killers Instinct sells 4 one-off in-app purchases. Castle Guardians 3D asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Castle Guardians 3D against 5.0 for Killers Instinct. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Castle Guardians 3D ships an update fortnightly, Killers Instinct every 8 months. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Castle Guardians 3D | Killers Instinct |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/castle-guardians-3d/id1612010180/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/killers-instinct/id6642654923/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 8 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 189 MB | 93 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 17+ |
| Developer | [MondayOFF](https://appshunter.io/developer/1448226898) | [7Seas Entertainment Limited](https://appshunter.io/developer/1630154597) |

## What reviewers say

### Castle Guardians 3D

[App page](https://appshunter.io/ios/app/castle-guardians-3d/id1612010180)

Engage in a simple, touch-based game designed for quick play sessions. Enjoy a fantastic experience during your brief moments of free time. This game is free to play.

**Highlights:** Simple touch controls, Free to play, Ideal for short breaks, Fantastic game feel, Hyper-casual gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### Killers Instinct

[App page](https://appshunter.io/ios/app/killers-instinct/id6642654923)

Engage in a fast-paced 2D action-strategy shooter where you strategically eliminate threats. Utilize a variety of environmental obstacles to take down enemies in multiple creative ways across 50 challenging levels. Enjoy an offline experience with no time limits and smooth controls.

**Highlights:** Fast-paced action-strategy gameplay, Strategic obstacle utilization, 50 challenging levels, No time limit, Offline play, Smooth controls

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |
| Coins Pack 2000 | $1.99 | one-time |
| Coins Pack 5000 | $2.99 | one-time |
| Unlock All Levels | $3.99 | one-time |


## Frequently asked questions

### Is Castle Guardians 3D free?

Castle Guardians 3D is free to download, with no in-app purchases.

### Is Killers Instinct free?

Killers Instinct is free to download, with in-app purchases available.

### Which has better reviews, Castle Guardians 3D or Killers Instinct?

Castle Guardians 3D and Killers Instinct are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Castle Guardians 3D or Killers Instinct have ads?

Castle Guardians 3D shows ads; Killers Instinct does not.

### Which is updated more often, Castle Guardians 3D or Killers Instinct?

Castle Guardians 3D ships an update fortnightly, and Killers Instinct every 8 months. Most recently, Castle Guardians 3D was updated on October 7, 2026 and Killers Instinct on October 25, 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.*