# Endless Runner X vs Kai

The clearest difference is rating: Kai at 5.0 against Endless Runner X's 4.4. Kai also leads on in-app purchases (none vs 1) and review sentiment (100% vs 85%). Endless Runner X's advantage is ratings volume (257 vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Endless Runner X sells 1 one-off in-app purchase. Kai asks for nothing beyond the download.

Kai holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Endless Runner X has 257 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 85% of Endless Runner X's written reviews are positive against 100% of Kai's.

Endless Runner X ships an update every 6 weeks, Kai every 2 months. The most recent releases landed on October 13, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Endless Runner X | Kai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (257 ratings)](https://appshunter.io/ios/app/endless-runner-x/id1448806645/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/kai-a-dark-endless-runner/id1596080851/reviews)** |
| Number of ratings | **257** | 4 |
| Positive reviews | 85.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 23 MB | 85 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TBD Game Company](https://appshunter.io/developer/1448806644) | [Super Unlimited Inc.](https://appshunter.io/developer/1567165561) |

## What reviewers say

### Endless Runner X

[App page](https://appshunter.io/ios/app/endless-runner-x/id1448806645)

This endless runner game challenges players to break free from a repetitive cycle. By corrupting the code, players can uncover secrets, unlock new content, and ultimately save the hero. It offers arcade fun with leaderboards for competitive play.

**Highlights:** Tap to jump mechanics, Code corruption for secrets, Unlock new levels and modes, Compete on leaderboards, Discover hidden story

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 🚀 Addictive gameplay
- 👍 Unique and creative levels
- 💡 Interesting story and characters
- 🚀 Offline playability
- 👍 Simple yet challenging controls

**What reviewers complain about**

- 🐛 Glitches and bugs
- 🔋 Drains battery quickly
- 💰 Too many ads
- 🤔 Some levels too difficult

**Reported bugs**

- Game crashes on certain levels
- Jumping/controls not responsive at times
- Levels resetting progress unexpectedly

**Requested features**

- More levels and game modes
- Ability to skip difficult levels
- Improved controls for certain levels
- Hint system for harder levels


### Kai

[App page](https://appshunter.io/ios/app/kai-a-dark-endless-runner/id1596080851)

Navigate a dark, haunting nightmare as Kai, a black sheep trapped in an endless run for sanity. Master simple tap controls to dodge obstacles on the ground and in the air, collecting coins to challenge your high score in this atmospheric endless runner.

**Highlights:** Simple tap controls, Ground and flying modes, Dodge ground and air obstacles, Collect coins, Challenge high scores, Creepy environment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Endless Runner X free?

Endless Runner X is free to download, with in-app purchases available.

### Is Kai free?

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

### Which has better reviews, Endless Runner X or Kai?

Kai is rated higher. Endless Runner X averages 4.4 out of 5 from 257 ratings, while Kai averages 5.0 from 4 ratings.

### Do Endless Runner X or Kai have ads?

Both Endless Runner X and Kai show ads.

### Which is updated more often, Endless Runner X or Kai?

Endless Runner X ships an update every 6 weeks, and Kai every 2 months. Most recently, Endless Runner X was updated on October 13, 2026 and Kai on September 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.*