Endless Runner X vs Kai
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Endless Runner X
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.
- Tap to jump mechanics
- Code corruption for secrets
- Unlock new levels and modes
- Compete on leaderboards
- Discover hidden story
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It’s just another endless runner... or is it? It may look like the same old cycle again and again - run, jump, die, repeat - but corrupting the code can create the chance to elude the endless monotony, find new meaning and free our helpless hero! Prove that you are the player with the finger tapping, puzzle solving and system fighting skills to rival them all! Find the secret, rise to the challenge, and escape the loop! GAME FEATURES • Easy to play! Just tap to jump... at first... • Secrets abound! Corrupt the code and discover the story. • Endless arcade fun! Unlock new levels and game modes. • Epic challenge! For casual and hardcore players alike. • Leaderboards! Compete with your friends and the world. Please note: ‘Endless Runner X’ is free to play and supported by in-game ads. An in-app purchase is available to remove ads from the game.
Kai
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.
- Simple tap controls
- Ground and flying modes
- Dodge ground and air obstacles
- Collect coins
- Challenge high scores
- Creepy environment
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In this dark and moody endless runner filled with memories that haunt young Kai, a self-labeled black sheep of the family, is trapped in a run for sanity within a nightmare. From its first moments, the creepiness of Kai’s world makes itself known with a soundtrack that darkens Kai’s journey into his fears even further. A true challenge for fans of endless runner games, Kai’s simple interface offers a mixture of ground and flying mode that players will have to balance in order to survive. In this place, it’s like a nightmare that never ends. An endless runner loop that Kai may never escape. Play if you dare. • Simple tap mechanic controls • Creepy environment to fly, glide and run through • Dodge the wheels on the ground as you run or the birds in the air as you fly • Fly over obstacles on the ground and birds in the air • Collect as many coins throughout the journey • Challenge your high-score when you reenter the nightmare
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Endless Runner X | Kai |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (257 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 85.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 257 — better | 4 |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 23 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | TBD Game Company | Super Unlimited Inc. |
Customer experience
Endless Runner X
Kai
Bugs and requests
Endless Runner X
Reported bugs
3 issues- Game crashes on certain levels
- Jumping/controls not responsive at times
- Levels resetting progress unexpectedly
Requested features
4 requests- More levels and game modes
- Ability to skip difficult levels
- Improved controls for certain levels
- Hint system for harder levels
Kai
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Endless Runner X
- Remove Ads$2.99
Kai
No in-app purchases
Questions
Is Endless Runner X free?
Is Kai free?
Which has better reviews, Endless Runner X or Kai?
Do Endless Runner X or Kai have ads?
Which is updated more often, Endless Runner X or Kai?
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