# Boom Karts Multiplayer Racing vs U

The clearest difference is in-app purchases: U at none against Boom Karts Multiplayer Racing's 17. U also leads on update cadence (every 3 weeks vs every 6 weeks). Boom Karts Multiplayer Racing's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Boom Karts Multiplayer Racing sells 17 one-off in-app purchases. U asks for nothing beyond the download.

Boom Karts Multiplayer Racing ships an update every 6 weeks, U every 3 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Boom Karts Multiplayer Racing | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (871 ratings)](https://appshunter.io/ios/app/boom-karts-multiplayer-racing/id1553445732/reviews)** | — |
| Number of ratings | **871** | — |
| Positive reviews | 40.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 566 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Zaibatsu Interactive](https://appshunter.io/developer/947001379) | [BARTOSZ RACZKOWSKI](https://appshunter.io/developer/6806374696) |

## What reviewers say

### Boom Karts Multiplayer Racing

[App page](https://appshunter.io/ios/app/boom-karts-multiplayer-racing/id1553445732)

Compete in fast-paced, real-time arcade kart races against players worldwide. Master drifting and boost mechanics, utilize crazy power-ups to hinder opponents, and customize your kart and avatar. Form teams with friends for custom races and unlock new karts and upgrades.

**Highlights:** Real-time online multiplayer races, Drifting and nitro boost mechanics, Arsenal of power-ups and weapons, Team creation and management, Customizable karts and avatars, Kart blueprint collection and upgrades

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pile of Gems | $1.99 | one-time |
| Starter Bundle | $2.99 | one-time |
| Box of Gems | $4.99 | one-time |
| Odyssey Bundle | $4.99 | one-time |
| Unicorn Bundle | $4.99 | one-time |
| Gem Stash | $4.99 | one-time |
| Boom Pass Discount | $5.99 | one-time |
| Boom Pass | $6.99 | one-time |
| The Silver Driver | $7.99 | one-time |
| Mound of Gems | $9.99 | one-time |
| Boom Pass +10 | $9.99 | one-time |
| Boom Burger Bundle | $9.99 | one-time |
| The Gold Racer | $12.99 | one-time |
| The Master Challenger | $14.99 | one-time |
| Container of Gems | $19.99 | one-time |
| The Legendary Elite | $19.99 | one-time |
| Gem Ship | $99.99 | one-time |

**What reviewers like**

- 🚀 Well-rounded game
- 👍 Fun racing game
- 👍 Enjoyable gameplay
- 👍 Potential to be one of the best kart games

**What reviewers complain about**

- 🐛 Buggy and glitchy
- 🐛 Laggy gameplay
- 🐛 Matchmaking and server issues
- 🔒 Pay-to-win mechanics
- 🐛 Unbalanced gameplay and unfair power-ups

**Reported bugs**

- Adventure mode not working
- Space mode not working
- Rewards and chests not functioning properly
- Accounts being hacked or banned for no reason
- Invisible obstacles and power-ups

**Requested features**

- Add leagues and rankings
- Improve progression and unlock system
- Reduce reliance on power-ups and focus more on driving skills
- Improve server stability and matchmaking
- Add more tracks and content updates


### U

[App page](https://appshunter.io/ios/app/u-boot-hunter/id6806374694)

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

**In-app purchases:** none


## Frequently asked questions

### Is Boom Karts Multiplayer Racing free?

Boom Karts Multiplayer Racing is free to download, with in-app purchases available.

### Is U free?

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

### Do Boom Karts Multiplayer Racing or U have ads?

Both Boom Karts Multiplayer Racing and U show ads.

### Which is updated more often, Boom Karts Multiplayer Racing or U?

Boom Karts Multiplayer Racing ships an update every 6 weeks, and U every 3 weeks. Most recently, Boom Karts Multiplayer Racing was updated on October 24, 2026 and U on October 15, 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.*