# Castle Defense King vs Devil Slayer

The clearest difference is rating: Devil Slayer at 4.8 against Castle Defense King's 4.1. Devil Slayer also leads on review sentiment (71% vs 54%) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Castle Defense King sells 6 one-off in-app purchases and Devil Slayer sells 20 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Devil Slayer holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 11 and 47 respectively. Written reviews point the same way: 54% of Castle Defense King's written reviews are positive against 71% of Devil Slayer's.

Castle Defense King ships an update every 2 months, Devil Slayer every 3 weeks. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Castle Defense King | Devil Slayer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (11 ratings)](https://appshunter.io/ios/app/castle-defense-king/id1472708586/reviews) | **[4.8 (47 ratings)](https://appshunter.io/ios/app/devil-slayer/id6451179758/reviews)** |
| Number of ratings | 11 | **47** |
| Positive reviews | 53.8% of reviews | **71.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 60 MB | 653 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [MOBIRIX](https://appshunter.io/developer/349276666) | [Youngdal Kim](https://appshunter.io/developer/1499428883) |

## What reviewers say

### Castle Defense King

[App page](https://appshunter.io/ios/app/castle-defense-king/id1472708586)

Build your defenses by reinforcing walls, soldiers, and heroes to withstand massive enemy waves. Utilize unique hero abilities and powerful spells like repair magic, magic bombs, and ice storms to overcome challenges. Compete globally for the highest wave clear.

**Highlights:** Reinforce walls, heroes, and soldiers, Combine unique heroes, Upgrade towers and magic, Utilize repair, bomb, and ice storm spells, Massive enemy waves, Offline play supported, Compete on global leaderboards

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase 300 Ruby | $2.99 | one-time |
| Purchase 550 Ruby | $4.99 | one-time |
| Purchase 1200 Ruby | $9.99 | one-time |
| Purchase 3900 Ruby | $29.99 | one-time |
| Purchase 7000 Ruby | $49.99 | one-time |
| Purchase 17000 Ruby | $99.99 | one-time |


### Devil Slayer

[App page](https://appshunter.io/ios/app/devil-slayer/id6451179758)

Engage in spectacular hack and slash combat in this idle action RPG. Grow your character with idle rewards and offline earnings. Conquer bosses and acquire powerful equipment through diverse content and daily login bonuses.

**Highlights:** Spectacular action battles, Hack and slash combat, Idle character growth, Offline rewards, Diverse unlockable content, Giant boss battles, Acquire powerful equipment

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

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Guildjoin Unlock | $0.99 | one-time |
| Patiencebox 01 | $0.99 | one-time |
| Start Package 01 | $1.99 | one-time |
| Start Package 02 | $3.99 | one-time |
| Remove Ads | $4.99 | one-time |
| Start Package PLUS | $5.99 | one-time |
| WeeklyGrowth01 | $5.99 | one-time |
| Reset Pass | $6.99 | one-time |
| hopepackage | $6.99 | one-time |
| RotationPackage01 | $8.99 | one-time |
| Devilbox02 | $9.99 | one-time |
| Seeds of Happiness | $9.99 | one-time |
| WeeklyGrowth02 | $12.99 | one-time |
| Bosspack01 | $12.99 | one-time |
| AchievePackage01 | $14.99 | one-time |
| Costume_Body 03 | $14.99 | one-time |
| Costume_Body 02 | $14.99 | one-time |
| RotationPackage02 | $19.99 | one-time |
| WeeklyGrowth03 | $29.99 | one-time |
| RotationPackage03 | $39.99 | one-time |


## Frequently asked questions

### Is Castle Defense King free?

Castle Defense King is free to download, with in-app purchases available.

### Is Devil Slayer free?

Devil Slayer is free to download, with in-app purchases available.

### Which has better reviews, Castle Defense King or Devil Slayer?

Devil Slayer is rated higher. Castle Defense King averages 4.1 out of 5 from 11 ratings, while Devil Slayer averages 4.8 from 47 ratings.

### Do Castle Defense King or Devil Slayer have ads?

Both Castle Defense King and Devil Slayer show ads.

### Which is updated more often, Castle Defense King or Devil Slayer?

Castle Defense King ships an update every 2 months, and Devil Slayer every 3 weeks. Most recently, Castle Defense King was updated on October 21, 2026 and Devil Slayer on October 13, 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.*